{"id":"CVE-2026-89831","revision":"c2b68d017633499d9d9033bc0ca16a96","records":[{"revision":"c2b68d017633499d9d9033bc0ca16a96","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89831","aliases":[],"title":"f2fs: protect critical_task_priority updates with s_umount","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: protect critical_task_priority updates with s_umount\n\nThe sysfs store path already takes s_umount for GC thread control\nentries, and ckpt_thread_ioprio is covered as well.\n\ncritical_task_priority also updates checkpoint or GC kthread scheduling\nstate, but it is not covered by that serialization. It can race with\nremount or teardown paths that are stopping those threads.\n\nProtect critical_task_priority sysfs writes with s_umount too.","state":0,"publishedAt":"2026-09-16T10:31:03.702+00:00","modifiedAt":"2026-10-19T08:53:24.792+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/f2fs/sysfs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"52190933c37a96164b271f3f30c16099d9eb8c09\",\n                            \"lessThan\": \"bee6dfcc111b1dffdb3e13d73b7028b699fa0165\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"52190933c37a96164b271f3f30c16099d9eb8c09\",\n                            \"lessThan\": \"8e4692c6c165e81b2cbb847d8da4b45a53483b33\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/f2fs/sysfs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"7.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.5\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/bee6dfcc111b1dffdb3e13d73b7028b699fa0165","https://git.kernel.org/stable/c/8e4692c6c165e81b2cbb847d8da4b45a53483b33"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89831","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89831","identifiers":["CVE-2026-89831"]},"retained":false,"historicalAffected":[]}],"coverage":[]}