{"id":"CVE-2026-89636","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-89636","summary":"smb: client: clear ce->tgthint in free_tgts()","details":"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.","published":"2026-09-11T19:45:30.283Z","modified":"2026-09-14T03:46:22.343329404Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.12.109"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/5baab40404a9393bcc0b7b8f1950bf2c307e0984"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7507bd1885643d0461a6017767492450af1ce2a3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9ab46a13798a61d9d020b01d4e57efdabe6624fa"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b1b741cf8e7ce1b91d937e23decd3d3358748700"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89636.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89636"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-14T03:46:22.343329404Z"}}