CVE-2026-23113 SUSE CVE security@suse.de SUSE Security Team SUSE CVE-2026-23113 Interim 1 1 2026-03-05T00:17:24Z current 2026-03-05T00:17:24Z 2026-03-05T00:17:24Z cve-database/bin/generate-cvrf-cve.pl 2020-12-27T01:00:00Z CVE-2026-23113 In the Linux kernel, the following vulnerability has been resolved: io_uring/io-wq: check IO_WQ_BIT_EXIT inside work run loop Currently this is checked before running the pending work. Normally this is quite fine, as work items either end up blocking (which will create a new worker for other items), or they complete fairly quickly. But syzbot reports an issue where io-wq takes seemingly forever to exit, and with a bit of debugging, this turns out to be because it queues a bunch of big (2GB - 4096b) reads with a /dev/msr* file. Since this file type doesn't support ->read_iter(), loop_rw_iter() ends up handling them. Each read returns 16MB of data read, which takes 20 (!!) seconds. With a bunch of these pending, processing the whole chain can take a long time. Easily longer than the syzbot uninterruptible sleep timeout of 140 seconds. This then triggers a complaint off the io-wq exit path: INFO: task syz.4.135:6326 blocked for more than 143 seconds. Not tainted syzkaller #0 Blocked by coredump. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.135 state:D stack:26824 pid:6326 tgid:6324 ppid:5957 task_flags:0x400548 flags:0x00080000 Call Trace: <TASK> context_switch kernel/sched/core.c:5256 [inline] __schedule+0x1139/0x6150 kernel/sched/core.c:6863 __schedule_loop kernel/sched/core.c:6945 [inline] schedule+0xe7/0x3a0 kernel/sched/core.c:6960 schedule_timeout+0x257/0x290 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:100 [inline] __wait_for_common+0x2fc/0x4e0 kernel/sched/completion.c:121 io_wq_exit_workers io_uring/io-wq.c:1328 [inline] io_wq_put_and_exit+0x271/0x8a0 io_uring/io-wq.c:1356 io_uring_clean_tctx+0x10d/0x190 io_uring/tctx.c:203 io_uring_cancel_generic+0x69c/0x9a0 io_uring/cancel.c:651 io_uring_files_cancel include/linux/io_uring.h:19 [inline] do_exit+0x2ce/0x2bd0 kernel/exit.c:911 do_group_exit+0xd3/0x2a0 kernel/exit.c:1112 get_signal+0x2671/0x26d0 kernel/signal.c:3034 arch_do_signal_or_restart+0x8f/0x7e0 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline] exit_to_user_mode_loop+0x8c/0x540 kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline] do_syscall_64+0x4ee/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa02738f749 RSP: 002b:00007fa0281ae0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fa0275e6098 RCX: 00007fa02738f749 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fa0275e6098 RBP: 00007fa0275e6090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa0275e6128 R14: 00007fff14e4fcb0 R15: 00007fff14e4fd98 There's really nothing wrong here, outside of processing these reads will take a LONG time. However, we can speed up the exit by checking the IO_WQ_BIT_EXIT inside the io_worker_handle_work() loop, as syzbot will exit the ring after queueing up all of these reads. Then once the first item is processed, io-wq will simply cancel the rest. That should avoid syzbot running into this complaint again. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). https://www.suse.com/support/security/rating/ SUSE Security Ratings SUSE Linux Enterprise Module for Basesystem 15 SP7 SUSE Linux Enterprise Module for Development Tools 15 SP7 SUSE Linux Enterprise Workstation Extension 15 SP7 SUSE Linux Enterprise High Availability Extension 15 SP7 SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS SUSE Linux Enterprise Module for Basesystem 15 SP7 SUSE Linux Enterprise Module for Development Tools 15 SP7 SUSE Linux Enterprise Module for Legacy 15 SP7 SUSE Linux Enterprise Module for Public Cloud 15 SP7 SUSE Linux Enterprise Live Patching 12 SP5 SUSE Linux Enterprise Live Patching 15 SP4 SUSE Linux Enterprise Live Patching 15 SP5 SUSE Linux Enterprise Live Patching 15 SP7 SUSE Linux Enterprise Micro 5.0 SUSE Linux Enterprise Micro 5.1 SUSE Linux Enterprise Micro 5.2 SUSE Linux Enterprise Micro 5.3 SUSE Linux Enterprise Micro 5.4 SUSE Linux Enterprise Micro 5.5 SUSE Real Time Module 15 SP7 SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE SUSE Linux Enterprise Server 12 SP2-LTSS SUSE Linux Enterprise Server 12 SP4-LTSS SUSE Linux Enterprise Server 12 SP5-LTSS SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security SUSE Linux Enterprise Server 15 SP1-LTSS SUSE Linux Enterprise Server 15 SP2-LTSS SUSE Linux Enterprise Server 15 SP3-LTSS SUSE Linux Enterprise Server 15 SP4-LTSS SUSE Linux Enterprise Server 15 SP5-LTSS SUSE Linux Enterprise Server 15 SP6-LTSS SUSE Linux Enterprise Module for Basesystem 15 SP7 SUSE Linux Enterprise Module for Development Tools 15 SP7 SUSE Linux Enterprise Module for Legacy 15 SP7 SUSE Linux Enterprise Module for Public Cloud 15 SP7 SUSE Linux Enterprise Workstation Extension 15 SP7 SUSE Linux Enterprise Server 16.0 SUSE Linux Enterprise Server Teradata 12 SP3 SUSE Linux Enterprise Server Teradata 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP5 SUSE Linux Enterprise Server for SAP Applications 15 SP6 SUSE Linux Enterprise Module for Basesystem 15 SP7 SUSE Linux Enterprise Module for Development Tools 15 SP7 SUSE Linux Enterprise Module for Legacy 15 SP7 SUSE Linux Enterprise Module for Public Cloud 15 SP7 SUSE Linux Enterprise Workstation Extension 15 SP7 SUSE Linux Enterprise Server for SAP applications 16.0 SUSE Linux Micro 6.0 SUSE Linux Micro 6.1 openSUSE Leap 15.6 cluster-md-kmp-default dlm-kmp-default gfs2-kmp-default kernel-default kernel-default-base kernel-default-devel kernel-default-extra kernel-default-kgraft kernel-default-kgraft-devel kernel-default-livepatch kernel-default-livepatch-devel kernel-default-man kernel-default-optional kernel-default-vdso kernel-devel kernel-devel-azure kernel-devel-rt kernel-macros kernel-rt kernel-source kernel-source-azure kernel-source-rt kernel-source-vanilla kselftests-kmp-default ocfs2-kmp-default reiserfs-kmp-default cluster-md-kmp-default as a component of SUSE Linux Enterprise High Availability Extension 15 SP7 dlm-kmp-default as a component of SUSE Linux Enterprise High Availability Extension 15 SP7 gfs2-kmp-default as a component of SUSE Linux Enterprise High Availability Extension 15 SP7 ocfs2-kmp-default as a component of SUSE Linux Enterprise High Availability Extension 15 SP7 kernel-default as a component of SUSE Linux Enterprise High Availability Extension 15 SP7 kernel-source as a component of SUSE Linux Enterprise High Availability Extension 15 SP7 kernel-default as a component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS kernel-default-devel as a component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS reiserfs-kmp-default as a component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS kernel-devel as a component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS kernel-macros as a component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS kernel-source as a component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS cluster-md-kmp-default as a component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS dlm-kmp-default as a component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS gfs2-kmp-default as a component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS kernel-default as a component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS kernel-default-devel as a component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS ocfs2-kmp-default as a component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS kernel-devel as a component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS kernel-macros as a component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS kernel-source as a component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS kernel-default-kgraft as a component of SUSE Linux Enterprise Live Patching 12 SP5 kernel-default-kgraft-devel as a component of SUSE Linux Enterprise Live Patching 12 SP5 kernel-default as a component of SUSE Linux Enterprise Live Patching 12 SP5 kernel-source as a component of SUSE Linux Enterprise Live Patching 12 SP5 kernel-default-livepatch as a component of SUSE Linux Enterprise Live Patching 15 SP4 kernel-default-livepatch-devel as a component of SUSE Linux Enterprise Live Patching 15 SP4 kernel-default as a component of SUSE Linux Enterprise Live Patching 15 SP4 kernel-source as a component of SUSE Linux Enterprise Live Patching 15 SP4 kernel-default-livepatch as a component of SUSE Linux Enterprise Live Patching 15 SP5 kernel-default-livepatch-devel as a component of SUSE Linux Enterprise Live Patching 15 SP5 kernel-default as a component of SUSE Linux Enterprise Live Patching 15 SP5 kernel-source as a component of SUSE Linux Enterprise Live Patching 15 SP5 kernel-default-livepatch as a component of SUSE Linux Enterprise Live Patching 15 SP7 kernel-default-livepatch-devel as a component of SUSE Linux Enterprise Live Patching 15 SP7 kernel-default as a component of SUSE Linux Enterprise Live Patching 15 SP7 kernel-source as a component of SUSE Linux Enterprise Live Patching 15 SP7 kernel-default as a component of SUSE Linux Enterprise Micro 5.0 kernel-default as a component of SUSE Linux Enterprise Micro 5.1 kernel-rt as a component of SUSE Linux Enterprise Micro 5.1 kernel-default as a component of SUSE Linux Enterprise Micro 5.2 kernel-rt as a component of SUSE Linux Enterprise Micro 5.2 kernel-source as a component of SUSE Linux Enterprise Micro 5.2 kernel-source-rt as a component of SUSE Linux Enterprise Micro 5.2 kernel-default as a component of SUSE Linux Enterprise Micro 5.3 kernel-rt as a component of SUSE Linux Enterprise Micro 5.3 kernel-source as a component of SUSE Linux Enterprise Micro 5.3 kernel-source-rt as a component of SUSE Linux Enterprise Micro 5.3 kernel-default as a component of SUSE Linux Enterprise Micro 5.4 kernel-rt as a component of SUSE Linux Enterprise Micro 5.4 kernel-source as a component of SUSE Linux Enterprise Micro 5.4 kernel-source-rt as a component of SUSE Linux Enterprise Micro 5.4 kernel-default as a component of SUSE Linux Enterprise Micro 5.5 kernel-macros as a component of SUSE Linux Enterprise Micro 5.5 kernel-source as a component of SUSE Linux Enterprise Micro 5.5 kernel-devel-rt as a component of SUSE Linux Enterprise Micro 5.5 kernel-source-rt as a component of SUSE Linux Enterprise Micro 5.5 kernel-default as a component of SUSE Linux Enterprise Module for Basesystem 15 SP7 kernel-default-devel as a component of SUSE Linux Enterprise Module for Basesystem 15 SP7 kernel-devel as a component of SUSE Linux Enterprise Module for Basesystem 15 SP7 kernel-macros as a component of SUSE Linux Enterprise Module for Basesystem 15 SP7 kernel-source as a component of SUSE Linux Enterprise Module for Basesystem 15 SP7 kernel-default as a component of SUSE Linux Enterprise Module for Development Tools 15 SP7 kernel-source as a component of SUSE Linux Enterprise Module for Development Tools 15 SP7 reiserfs-kmp-default as a component of SUSE Linux Enterprise Module for Legacy 15 SP7 kernel-default as a component of SUSE Linux Enterprise Module for Legacy 15 SP7 kernel-source as a component of SUSE Linux Enterprise Module for Legacy 15 SP7 kernel-devel-azure as a component of SUSE Linux Enterprise Module for Public Cloud 15 SP7 kernel-source-azure as a component of SUSE Linux Enterprise Module for Public Cloud 15 SP7 kernel-default as a component of SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE kernel-default-base as a component of SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE kernel-default-devel as a component of SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE kernel-source as a component of SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE kernel-default as a component of SUSE Linux Enterprise Server 12 SP2-LTSS kernel-default-base as a component of SUSE Linux Enterprise Server 12 SP2-LTSS kernel-default-devel as a component of SUSE Linux Enterprise Server 12 SP2-LTSS kernel-default-man as a component of SUSE Linux Enterprise Server 12 SP2-LTSS kernel-devel as a component of SUSE Linux Enterprise Server 12 SP2-LTSS kernel-macros as a component of SUSE Linux Enterprise Server 12 SP2-LTSS kernel-source as a component of SUSE Linux Enterprise Server 12 SP2-LTSS kernel-default as a component of SUSE Linux Enterprise Server 12 SP4-LTSS kernel-default-base as a component of SUSE Linux Enterprise Server 12 SP4-LTSS kernel-default-devel as a component of SUSE Linux Enterprise Server 12 SP4-LTSS kernel-default-man as a component of SUSE Linux Enterprise Server 12 SP4-LTSS kernel-devel as a component of SUSE Linux Enterprise Server 12 SP4-LTSS kernel-macros as a component of SUSE Linux Enterprise Server 12 SP4-LTSS kernel-source as a component of SUSE Linux Enterprise Server 12 SP4-LTSS cluster-md-kmp-default as a component of SUSE Linux Enterprise Server 12 SP5-LTSS dlm-kmp-default as a component of SUSE Linux Enterprise Server 12 SP5-LTSS gfs2-kmp-default as a component of SUSE Linux Enterprise Server 12 SP5-LTSS kernel-default as a component of SUSE Linux Enterprise Server 12 SP5-LTSS kernel-default-base as a component of SUSE Linux Enterprise Server 12 SP5-LTSS kernel-default-devel as a component of SUSE Linux Enterprise Server 12 SP5-LTSS kernel-default-man as a component of SUSE Linux Enterprise Server 12 SP5-LTSS ocfs2-kmp-default as a component of SUSE Linux Enterprise Server 12 SP5-LTSS kernel-devel as a component of SUSE Linux Enterprise Server 12 SP5-LTSS kernel-macros as a component of SUSE Linux Enterprise Server 12 SP5-LTSS kernel-source as a component of SUSE Linux Enterprise Server 12 SP5-LTSS kernel-default as a component of SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security kernel-source as a component of SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security kernel-default as a component of SUSE Linux Enterprise Server 15 SP1-LTSS kernel-default-base as a component of SUSE Linux Enterprise Server 15 SP1-LTSS kernel-default-devel as a component of SUSE Linux Enterprise Server 15 SP1-LTSS kernel-default-man as a component of SUSE Linux Enterprise Server 15 SP1-LTSS reiserfs-kmp-default as a component of SUSE Linux Enterprise Server 15 SP1-LTSS kernel-devel as a component of SUSE Linux Enterprise Server 15 SP1-LTSS kernel-macros as a component of SUSE Linux Enterprise Server 15 SP1-LTSS kernel-source as a component of SUSE Linux Enterprise Server 15 SP1-LTSS kernel-default as a component of SUSE Linux Enterprise Server 15 SP2-LTSS kernel-default-devel as a component of SUSE Linux Enterprise Server 15 SP2-LTSS reiserfs-kmp-default as a component of SUSE Linux Enterprise Server 15 SP2-LTSS kernel-devel as a component of SUSE Linux Enterprise Server 15 SP2-LTSS kernel-macros as a component of SUSE Linux Enterprise Server 15 SP2-LTSS kernel-source as a component of SUSE Linux Enterprise Server 15 SP2-LTSS kernel-default as a component of SUSE Linux Enterprise Server 15 SP3-LTSS kernel-default-devel as a component of SUSE Linux Enterprise Server 15 SP3-LTSS reiserfs-kmp-default as a component of SUSE Linux Enterprise Server 15 SP3-LTSS kernel-devel as a component of SUSE Linux Enterprise Server 15 SP3-LTSS kernel-macros as a component of SUSE Linux Enterprise Server 15 SP3-LTSS kernel-source as a component of SUSE Linux Enterprise Server 15 SP3-LTSS kernel-default as a component of SUSE Linux Enterprise Server 15 SP4-LTSS kernel-default-devel as a component of SUSE Linux Enterprise Server 15 SP4-LTSS reiserfs-kmp-default as a component of SUSE Linux Enterprise Server 15 SP4-LTSS kernel-devel as a component of SUSE Linux Enterprise Server 15 SP4-LTSS kernel-macros as a component of SUSE Linux Enterprise Server 15 SP4-LTSS kernel-source as a component of SUSE Linux Enterprise Server 15 SP4-LTSS cluster-md-kmp-default as a component of SUSE Linux Enterprise Server 15 SP5-LTSS dlm-kmp-default as a component of SUSE Linux Enterprise Server 15 SP5-LTSS gfs2-kmp-default as a component of SUSE Linux Enterprise Server 15 SP5-LTSS kernel-default as a component of SUSE Linux Enterprise Server 15 SP5-LTSS kernel-default-devel as a component of SUSE Linux Enterprise Server 15 SP5-LTSS ocfs2-kmp-default as a component of SUSE Linux Enterprise Server 15 SP5-LTSS reiserfs-kmp-default as a component of SUSE Linux Enterprise Server 15 SP5-LTSS kernel-devel as a component of SUSE Linux Enterprise Server 15 SP5-LTSS kernel-macros as a component of SUSE Linux Enterprise Server 15 SP5-LTSS kernel-source as a component of SUSE Linux Enterprise Server 15 SP5-LTSS cluster-md-kmp-default as a component of SUSE Linux Enterprise Server 15 SP6-LTSS dlm-kmp-default as a component of SUSE Linux Enterprise Server 15 SP6-LTSS gfs2-kmp-default as a component of SUSE Linux Enterprise Server 15 SP6-LTSS kernel-default as a component of SUSE Linux Enterprise Server 15 SP6-LTSS kernel-default-devel as a component of SUSE Linux Enterprise Server 15 SP6-LTSS ocfs2-kmp-default as a component of SUSE Linux Enterprise Server 15 SP6-LTSS reiserfs-kmp-default as a component of SUSE Linux Enterprise Server 15 SP6-LTSS kernel-devel as a component of SUSE Linux Enterprise Server 15 SP6-LTSS kernel-macros as a component of SUSE Linux Enterprise Server 15 SP6-LTSS kernel-source as a component of SUSE Linux Enterprise Server 15 SP6-LTSS kernel-default as a component of SUSE Linux Enterprise Server 16.0 kernel-devel as a component of SUSE Linux Enterprise Server 16.0 kernel-macros as a component of SUSE Linux Enterprise Server 16.0 kernel-source as a component of SUSE Linux Enterprise Server 16.0 kernel-source-vanilla as a component of SUSE Linux Enterprise Server 16.0 kernel-devel-azure as a component of SUSE Linux Enterprise Server 16.0 kernel-source-azure as a component of SUSE Linux Enterprise Server 16.0 kernel-default as a component of SUSE Linux Enterprise Server Teradata 12 SP3 kernel-source as a component of SUSE Linux Enterprise Server Teradata 12 SP3 kernel-default as a component of SUSE Linux Enterprise Server Teradata 15 SP4 kernel-source as a component of SUSE Linux Enterprise Server Teradata 15 SP4 kernel-default as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP4 kernel-default-devel as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP4 reiserfs-kmp-default as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP4 kernel-devel as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP4 kernel-macros as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP4 kernel-source as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP4 cluster-md-kmp-default as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP5 dlm-kmp-default as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP5 gfs2-kmp-default as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP5 kernel-default as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP5 kernel-default-devel as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP5 ocfs2-kmp-default as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP5 reiserfs-kmp-default as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP5 kernel-devel as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP5 kernel-macros as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP5 kernel-source as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP5 cluster-md-kmp-default as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 dlm-kmp-default as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 gfs2-kmp-default as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 kernel-default as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 kernel-default-devel as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 ocfs2-kmp-default as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 reiserfs-kmp-default as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 kernel-devel as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 kernel-macros as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 kernel-source as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 kernel-default as a component of SUSE Linux Enterprise Server for SAP applications 16.0 kernel-devel as a component of SUSE Linux Enterprise Server for SAP applications 16.0 kernel-macros as a component of SUSE Linux Enterprise Server for SAP applications 16.0 kernel-source as a component of SUSE Linux Enterprise Server for SAP applications 16.0 kernel-source-vanilla as a component of SUSE Linux Enterprise Server for SAP applications 16.0 kernel-devel-azure as a component of SUSE Linux Enterprise Server for SAP applications 16.0 kernel-source-azure as a component of SUSE Linux Enterprise Server for SAP applications 16.0 kernel-default-extra as a component of SUSE Linux Enterprise Workstation Extension 15 SP7 kernel-default as a component of SUSE Linux Enterprise Workstation Extension 15 SP7 kernel-source as a component of SUSE Linux Enterprise Workstation Extension 15 SP7 kernel-default as a component of SUSE Linux Micro 6.0 kernel-devel as a component of SUSE Linux Micro 6.0 kernel-macros as a component of SUSE Linux Micro 6.0 kernel-source as a component of SUSE Linux Micro 6.0 kernel-devel-rt as a component of SUSE Linux Micro 6.0 kernel-source-rt as a component of SUSE Linux Micro 6.0 kernel-default as a component of SUSE Linux Micro 6.1 kernel-devel as a component of SUSE Linux Micro 6.1 kernel-macros as a component of SUSE Linux Micro 6.1 kernel-source as a component of SUSE Linux Micro 6.1 kernel-devel-rt as a component of SUSE Linux Micro 6.1 kernel-source-rt as a component of SUSE Linux Micro 6.1 kernel-devel-rt as a component of SUSE Real Time Module 15 SP7 kernel-source-rt as a component of SUSE Real Time Module 15 SP7 cluster-md-kmp-default as a component of openSUSE Leap 15.6 dlm-kmp-default as a component of openSUSE Leap 15.6 gfs2-kmp-default as a component of openSUSE Leap 15.6 kernel-default as a component of openSUSE Leap 15.6 kernel-default-devel as a component of openSUSE Leap 15.6 kernel-default-extra as a component of openSUSE Leap 15.6 kernel-default-livepatch as a component of openSUSE Leap 15.6 kernel-default-livepatch-devel as a component of openSUSE Leap 15.6 kernel-default-optional as a component of openSUSE Leap 15.6 kernel-default-vdso as a component of openSUSE Leap 15.6 kselftests-kmp-default as a component of openSUSE Leap 15.6 ocfs2-kmp-default as a component of openSUSE Leap 15.6 reiserfs-kmp-default as a component of openSUSE Leap 15.6 kernel-devel as a component of openSUSE Leap 15.6 kernel-macros as a component of openSUSE Leap 15.6 kernel-source as a component of openSUSE Leap 15.6 kernel-source-vanilla as a component of openSUSE Leap 15.6 In the Linux kernel, the following vulnerability has been resolved: io_uring/io-wq: check IO_WQ_BIT_EXIT inside work run loop Currently this is checked before running the pending work. Normally this is quite fine, as work items either end up blocking (which will create a new worker for other items), or they complete fairly quickly. But syzbot reports an issue where io-wq takes seemingly forever to exit, and with a bit of debugging, this turns out to be because it queues a bunch of big (2GB - 4096b) reads with a /dev/msr* file. Since this file type doesn't support ->read_iter(), loop_rw_iter() ends up handling them. Each read returns 16MB of data read, which takes 20 (!!) seconds. With a bunch of these pending, processing the whole chain can take a long time. Easily longer than the syzbot uninterruptible sleep timeout of 140 seconds. This then triggers a complaint off the io-wq exit path: INFO: task syz.4.135:6326 blocked for more than 143 seconds. Not tainted syzkaller #0 Blocked by coredump. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.135 state:D stack:26824 pid:6326 tgid:6324 ppid:5957 task_flags:0x400548 flags:0x00080000 Call Trace: <TASK> context_switch kernel/sched/core.c:5256 [inline] __schedule+0x1139/0x6150 kernel/sched/core.c:6863 __schedule_loop kernel/sched/core.c:6945 [inline] schedule+0xe7/0x3a0 kernel/sched/core.c:6960 schedule_timeout+0x257/0x290 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:100 [inline] __wait_for_common+0x2fc/0x4e0 kernel/sched/completion.c:121 io_wq_exit_workers io_uring/io-wq.c:1328 [inline] io_wq_put_and_exit+0x271/0x8a0 io_uring/io-wq.c:1356 io_uring_clean_tctx+0x10d/0x190 io_uring/tctx.c:203 io_uring_cancel_generic+0x69c/0x9a0 io_uring/cancel.c:651 io_uring_files_cancel include/linux/io_uring.h:19 [inline] do_exit+0x2ce/0x2bd0 kernel/exit.c:911 do_group_exit+0xd3/0x2a0 kernel/exit.c:1112 get_signal+0x2671/0x26d0 kernel/signal.c:3034 arch_do_signal_or_restart+0x8f/0x7e0 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline] exit_to_user_mode_loop+0x8c/0x540 kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline] do_syscall_64+0x4ee/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa02738f749 RSP: 002b:00007fa0281ae0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fa0275e6098 RCX: 00007fa02738f749 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fa0275e6098 RBP: 00007fa0275e6090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa0275e6128 R14: 00007fff14e4fcb0 R15: 00007fff14e4fd98 There's really nothing wrong here, outside of processing these reads will take a LONG time. However, we can speed up the exit by checking the IO_WQ_BIT_EXIT inside the io_worker_handle_work() loop, as syzbot will exit the ring after queueing up all of these reads. Then once the first item is processed, io-wq will simply cancel the rest. That should avoid syzbot running into this complaint again. CVE-2026-23113 SUSE Linux Enterprise Live Patching 12 SP5:kernel-default SUSE Linux Enterprise Live Patching 12 SP5:kernel-default-kgraft SUSE Linux Enterprise Live Patching 12 SP5:kernel-default-kgraft-devel SUSE Linux Enterprise Live Patching 12 SP5:kernel-source SUSE Linux Enterprise Micro 5.0:kernel-default SUSE Linux Enterprise Micro 5.1:kernel-default SUSE Linux Enterprise Micro 5.1:kernel-rt SUSE Linux Enterprise Micro 5.2:kernel-default SUSE Linux Enterprise Micro 5.2:kernel-rt SUSE Linux Enterprise Micro 5.2:kernel-source SUSE Linux Enterprise Micro 5.2:kernel-source-rt SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE:kernel-default SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE:kernel-default-base SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE:kernel-default-devel SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE:kernel-source SUSE Linux Enterprise Server 12 SP2-LTSS:kernel-default SUSE Linux Enterprise Server 12 SP2-LTSS:kernel-default-base SUSE Linux Enterprise Server 12 SP2-LTSS:kernel-default-devel SUSE Linux Enterprise Server 12 SP2-LTSS:kernel-default-man SUSE Linux Enterprise Server 12 SP2-LTSS:kernel-devel SUSE Linux Enterprise Server 12 SP2-LTSS:kernel-macros SUSE Linux Enterprise Server 12 SP2-LTSS:kernel-source SUSE Linux Enterprise Server 12 SP4-LTSS:kernel-default SUSE Linux Enterprise Server 12 SP4-LTSS:kernel-default-base SUSE Linux Enterprise Server 12 SP4-LTSS:kernel-default-devel SUSE Linux Enterprise Server 12 SP4-LTSS:kernel-default-man SUSE Linux Enterprise Server 12 SP4-LTSS:kernel-devel SUSE Linux Enterprise Server 12 SP4-LTSS:kernel-macros SUSE Linux Enterprise Server 12 SP4-LTSS:kernel-source SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security:kernel-default SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security:kernel-source SUSE Linux Enterprise Server 12 SP5-LTSS:cluster-md-kmp-default SUSE Linux Enterprise Server 12 SP5-LTSS:dlm-kmp-default SUSE Linux Enterprise Server 12 SP5-LTSS:gfs2-kmp-default SUSE Linux Enterprise Server 12 SP5-LTSS:kernel-default SUSE Linux Enterprise Server 12 SP5-LTSS:kernel-default-base SUSE Linux Enterprise Server 12 SP5-LTSS:kernel-default-devel SUSE Linux Enterprise Server 12 SP5-LTSS:kernel-default-man SUSE Linux Enterprise Server 12 SP5-LTSS:kernel-devel SUSE Linux Enterprise Server 12 SP5-LTSS:kernel-macros SUSE Linux Enterprise Server 12 SP5-LTSS:kernel-source SUSE Linux Enterprise Server 12 SP5-LTSS:ocfs2-kmp-default SUSE Linux Enterprise Server 15 SP1-LTSS:kernel-default SUSE Linux Enterprise Server 15 SP1-LTSS:kernel-default-base SUSE Linux Enterprise Server 15 SP1-LTSS:kernel-default-devel SUSE Linux Enterprise Server 15 SP1-LTSS:kernel-default-man SUSE Linux Enterprise Server 15 SP1-LTSS:kernel-devel SUSE Linux Enterprise Server 15 SP1-LTSS:kernel-macros SUSE Linux Enterprise Server 15 SP1-LTSS:kernel-source SUSE Linux Enterprise Server 15 SP1-LTSS:reiserfs-kmp-default SUSE Linux Enterprise Server 15 SP2-LTSS:kernel-default SUSE Linux Enterprise Server 15 SP2-LTSS:kernel-default-devel SUSE Linux Enterprise Server 15 SP2-LTSS:kernel-devel SUSE Linux Enterprise Server 15 SP2-LTSS:kernel-macros SUSE Linux Enterprise Server 15 SP2-LTSS:kernel-source SUSE Linux Enterprise Server 15 SP2-LTSS:reiserfs-kmp-default SUSE Linux Enterprise Server 15 SP3-LTSS:kernel-default SUSE Linux Enterprise Server 15 SP3-LTSS:kernel-default-devel SUSE Linux Enterprise Server 15 SP3-LTSS:kernel-devel SUSE Linux Enterprise Server 15 SP3-LTSS:kernel-macros SUSE Linux Enterprise Server 15 SP3-LTSS:kernel-source SUSE Linux Enterprise Server 15 SP3-LTSS:reiserfs-kmp-default SUSE Linux Enterprise Server Teradata 12 SP3:kernel-default SUSE Linux Enterprise Server Teradata 12 SP3:kernel-source moderate 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H