{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"important"},"category":"csaf_security_advisory","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"Security update for the Linux Kernel (Live Patch 9 for SUSE Linux Enterprise Micro 6.0)","title":"Title of the patch"},{"category":"description","text":"\nThis update for the SUSE Linux Enterprise kernel 6.4.0-31.1 fixes one security issue\n\nThe following security issue was fixed:\n\n- CVE-2025-38588: ipv6: prevent infinite loop in rt6_nlmsg_size() (bsc#1249241).\n\nThe following non security issue was fixed:\n\n- fix addr_bit_set() issue on big-endian machines (bsc#1256928).\n","title":"Description of the patch"},{"category":"details","text":"SUSE-SLE-Micro-6.1-kernel-258","title":"Patchnames"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"SUSE ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"self","summary":"URL of this CSAF notice","url":"https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_20389-1.json"},{"category":"self","summary":"URL for SUSE-SU-2026:20389-1","url":"https://www.suse.com/support/update/announcement/2026/suse-su-202620389-1/"},{"category":"self","summary":"E-Mail link for SUSE-SU-2026:20389-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2026-February/024303.html"},{"category":"self","summary":"SUSE Bug 1249241","url":"https://bugzilla.suse.com/1249241"},{"category":"self","summary":"SUSE Bug 1256928","url":"https://bugzilla.suse.com/1256928"},{"category":"self","summary":"SUSE CVE CVE-2025-38588 page","url":"https://www.suse.com/security/cve/CVE-2025-38588/"}],"title":"Security update for the Linux Kernel (Live Patch 9 for SUSE Linux Enterprise Micro 6.0)","tracking":{"current_release_date":"2026-01-29T10:37:57Z","generator":{"date":"2026-01-29T10:37:57Z","engine":{"name":"cve-database.git:bin/generate-csaf.pl","version":"1"}},"id":"SUSE-SU-2026:20389-1","initial_release_date":"2026-01-29T10:37:57Z","revision_history":[{"date":"2026-01-29T10:37:57Z","number":"1","summary":"Current version"}],"status":"final","version":"1"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_version","name":"kernel-livepatch-6_4_0-31-default-11-1.2.s390x","product":{"name":"kernel-livepatch-6_4_0-31-default-11-1.2.s390x","product_id":"kernel-livepatch-6_4_0-31-default-11-1.2.s390x"}}],"category":"architecture","name":"s390x"},{"branches":[{"category":"product_version","name":"kernel-livepatch-6_4_0-31-default-11-1.2.x86_64","product":{"name":"kernel-livepatch-6_4_0-31-default-11-1.2.x86_64","product_id":"kernel-livepatch-6_4_0-31-default-11-1.2.x86_64"}}],"category":"architecture","name":"x86_64"},{"branches":[{"category":"product_name","name":"SUSE Linux Micro 6.1","product":{"name":"SUSE Linux Micro 6.1","product_id":"SUSE Linux Micro 6.1","product_identification_helper":{"cpe":"cpe:/o:suse:sl-micro:6.1"}}}],"category":"product_family","name":"SUSE Linux Enterprise"}],"category":"vendor","name":"SUSE"}],"relationships":[{"category":"default_component_of","full_product_name":{"name":"kernel-livepatch-6_4_0-31-default-11-1.2.s390x as component of SUSE Linux Micro 6.1","product_id":"SUSE Linux Micro 6.1:kernel-livepatch-6_4_0-31-default-11-1.2.s390x"},"product_reference":"kernel-livepatch-6_4_0-31-default-11-1.2.s390x","relates_to_product_reference":"SUSE Linux Micro 6.1"},{"category":"default_component_of","full_product_name":{"name":"kernel-livepatch-6_4_0-31-default-11-1.2.x86_64 as component of SUSE Linux Micro 6.1","product_id":"SUSE Linux Micro 6.1:kernel-livepatch-6_4_0-31-default-11-1.2.x86_64"},"product_reference":"kernel-livepatch-6_4_0-31-default-11-1.2.x86_64","relates_to_product_reference":"SUSE Linux Micro 6.1"}]},"vulnerabilities":[{"cve":"CVE-2025-38588","ids":[{"system_name":"SUSE CVE Page","text":"https://www.suse.com/security/cve/CVE-2025-38588"}],"notes":[{"category":"general","text":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: prevent infinite loop in rt6_nlmsg_size()\n\nWhile testing prior patch, I was able to trigger\nan infinite loop in rt6_nlmsg_size() in the following place:\n\nlist_for_each_entry_rcu(sibling, &f6i->fib6_siblings,\n\t\t\tfib6_siblings) {\n\trt6_nh_nlmsg_size(sibling->fib6_nh, &nexthop_len);\n}\n\nThis is because fib6_del_route() and fib6_add_rt2node()\nuses list_del_rcu(), which can confuse rcu readers,\nbecause they might no longer see the head of the list.\n\nRestart the loop if f6i->fib6_nsiblings is zero.","title":"CVE description"}],"product_status":{"recommended":["SUSE Linux Micro 6.1:kernel-livepatch-6_4_0-31-default-11-1.2.s390x","SUSE Linux Micro 6.1:kernel-livepatch-6_4_0-31-default-11-1.2.x86_64"]},"references":[{"category":"external","summary":"CVE-2025-38588","url":"https://www.suse.com/security/cve/CVE-2025-38588"},{"category":"external","summary":"SUSE Bug 1248368 for CVE-2025-38588","url":"https://bugzilla.suse.com/1248368"},{"category":"external","summary":"SUSE Bug 1249241 for CVE-2025-38588","url":"https://bugzilla.suse.com/1249241"}],"remediations":[{"category":"vendor_fix","details":"To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n","product_ids":["SUSE Linux Micro 6.1:kernel-livepatch-6_4_0-31-default-11-1.2.s390x","SUSE Linux Micro 6.1:kernel-livepatch-6_4_0-31-default-11-1.2.x86_64"]}],"scores":[{"cvss_v3":{"baseScore":7,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"products":["SUSE Linux Micro 6.1:kernel-livepatch-6_4_0-31-default-11-1.2.s390x","SUSE Linux Micro 6.1:kernel-livepatch-6_4_0-31-default-11-1.2.x86_64"]}],"threats":[{"category":"impact","date":"2026-01-29T10:37:57Z","details":"important"}],"title":"CVE-2025-38588"}]}