{"id":"CVE-2026-89636","revision":"493f9d2145bc443da9fc9d64937689f7","records":[{"revision":"493f9d2145bc443da9fc9d64937689f7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89636","aliases":[],"title":"smb: client: clear ce->tgthint in free_tgts()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: clear ce->tgthint in free_tgts()\n\nWhen free_tgts() frees all structures in ce->tlist, ce->tgthint\nis left pointing to one of the freed cache_dfs_tgt structures.\n\nIf ce->tgthint is not reset before it is used later, it results\nin a use-after-free.\n\nSet ce->tgthint to NULL in free_tgts() after the elements are\nfreed to reflect that no elements remain.","state":0,"publishedAt":"2026-09-11T19:45:30.283+00:00","modifiedAt":"2026-10-19T08:50:08.281+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/smb/client/dfs_cache.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"54be1f6c1c37498bba557049df646cc239fa37e3\",\n                            \"lessThan\": \"14f60e959b5ac813715ff72e127beb3584ddabf6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"54be1f6c1c37498bba557049df646cc239fa37e3\",\n                            \"lessThan\": \"3ff9462bb7a06d8d32a1dc02d39580b078ec9e55\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"54be1f6c1c37498bba557049df646cc239fa37e3\",\n                            \"lessThan\": \"7507bd1885643d0461a6017767492450af1ce2a3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"54be1f6c1c37498bba557049df646cc239fa37e3\",\n                            \"lessThan\": \"9ab46a13798a61d9d020b01d4e57efdabe6624fa\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"54be1f6c1c37498bba557049df646cc239fa37e3\",\n                            \"lessThan\": \"5baab40404a9393bcc0b7b8f1950bf2c307e0984\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"54be1f6c1c37498bba557049df646cc239fa37e3\",\n                            \"lessThan\": \"b1b741cf8e7ce1b91d937e23decd3d3358748700\",\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/smb/client/dfs_cache.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\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":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/14f60e959b5ac813715ff72e127beb3584ddabf6","https://git.kernel.org/stable/c/3ff9462bb7a06d8d32a1dc02d39580b078ec9e55","https://git.kernel.org/stable/c/7507bd1885643d0461a6017767492450af1ce2a3","https://git.kernel.org/stable/c/9ab46a13798a61d9d020b01d4e57efdabe6624fa","https://git.kernel.org/stable/c/5baab40404a9393bcc0b7b8f1950bf2c307e0984","https://git.kernel.org/stable/c/b1b741cf8e7ce1b91d937e23decd3d3358748700"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89636","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89636","identifiers":["CVE-2026-89636"]},"retained":false,"historicalAffected":[]}],"coverage":[]}