{"id":"CVE-2026-45861","revision":"fa952120e49f486eb498344b0ac1afd5","records":[{"revision":"fa952120e49f486eb498344b0ac1afd5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-45861","aliases":[],"title":"gfs2: Fix slab-use-after-free in qd_put","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: Fix slab-use-after-free in qd_put\n\nCommit a475c5dd16e5 (\"gfs2: Free quota data objects synchronously\")\nstarted freeing quota data objects during filesystem shutdown instead of\nputting them back onto the LRU list, but it failed to remove these\nobjects from the LRU list, causing LRU list corruption.  This caused\nuse-after-free when the shrinker (gfs2_qd_shrink_scan) tried to access\nalready-freed objects on the LRU list.\n\nFix this by removing qd objects from the LRU list before freeing them in\nqd_put().\n\nInitial fix from Deepanshu Kartikey <kartikey406@gmail.com>.","state":0,"publishedAt":"2026-05-27T12:15:41.057+00:00","modifiedAt":"2026-10-21T12:40:53.402+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/gfs2/quota.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"a475c5dd16e57c570113eccba51955b5df8bb052\",\n                            \"lessThan\": \"53aaf083de197946b25bc4ffa3068d37366ce73d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a475c5dd16e57c570113eccba51955b5df8bb052\",\n                            \"lessThan\": \"ca7c67bdd293089b3483f18886d6b2d0037d2ad9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a475c5dd16e57c570113eccba51955b5df8bb052\",\n                            \"lessThan\": \"1d47922b98046b8070a77347fb883a6523792803\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a475c5dd16e57c570113eccba51955b5df8bb052\",\n                            \"lessThan\": \"80fff26d7a0c3926b511661c27eecc811a420eef\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a475c5dd16e57c570113eccba51955b5df8bb052\",\n                            \"lessThan\": \"22150a7d401d9e9169b9b68e05bed95f7f49bf69\",\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/gfs2/quota.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.75\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.14\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.4\",\n                            \"lessThanOrEqual\": \"6.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/53aaf083de197946b25bc4ffa3068d37366ce73d","https://git.kernel.org/stable/c/ca7c67bdd293089b3483f18886d6b2d0037d2ad9","https://git.kernel.org/stable/c/1d47922b98046b8070a77347fb883a6523792803","https://git.kernel.org/stable/c/80fff26d7a0c3926b511661c27eecc811a420eef","https://git.kernel.org/stable/c/22150a7d401d9e9169b9b68e05bed95f7f49bf69"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-45861","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-45861","identifiers":["CVE-2026-45861"]},"retained":false,"historicalAffected":[]}],"coverage":[]}