In the Linux kernel, the following vulnerability has been resolved: ksmbd: use opener credentials for delete-on-close Delete-on-close can be completed by deferred or durable handle teardown, where no request work is available. Both the base-file unlink and the ADS xattr removal consequently run with the ksmbd worker credentials and can bypass filesystem permission checks. Run both operations with the credentials captured in struct file when the handle was opened. This preserves the authenticated user's fsuid, fsgid, supplementary groups and capability restrictions at final close.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 9.1 · linuxNVD modified 2026-10-30 12:27
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 6
- https://git.kernel.org/stable/c/3cb2e6e2a6798909507b9d695e4b80e685e72d26
- https://git.kernel.org/stable/c/f08b3f451f12eee4abd8a5981803bc36db84458b
- https://git.kernel.org/stable/c/18c59109bb6fb816d5102171666f87cf1e29901d
- https://git.kernel.org/stable/c/e72c15085b6d86f45d224d98aa75b5cace4aaab9
- https://git.kernel.org/stable/c/4b7059974549d278e30fe70e2a4e421f9839817d
- https://git.kernel.org/stable/c/52e2f21911158ec961cd5aae19c56460db382af0