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CVE-2026-88924

7.0 high SSVC exploitation: poc Published
NVD · CVE.org

A flaw was found in the admin backend of gvfs. The privileged gvfsd-admin daemon changes the ownership of newly created private D-Bus sockets by calling the link-following chown() function on a pathname inside a user-controlled directory. A local attacker can exploit this via a Time-of-Check Time-of-Use (TOCTOU) race condition and exchange the socket pathname with a symbolic link pointing to an arbitrary root-owned file (such as /etc/pam.d/su). The daemon subsequently follows the symlink and changes the ownership of the targeted root-owned file to the attacker's user ID. This allows an authenticated local attacker to modify critical system files, leading to a full local privilege escalation to root.

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 11

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-20 23:01
  2. References+1 references (now 10)NVD modified 2026-10-21 00:17
  3. StatusPublished → Awaiting AnalysisNVD modified 2026-10-21 00:17
  4. StatusAwaiting Analysis → PublishedNVD modified 2026-10-20 14:57
  5. References+2 references (now 9)NVD modified 2026-10-20 15:17
  6. StatusPublished → Awaiting AnalysisNVD modified 2026-10-20 15:17
  7. StatusAwaiting Analysis → PublishedNVD modified 2026-10-20 13:17
  8. References+1 references (now 7)NVD modified 2026-10-20 14:17
  9. StatusPublished → Awaiting AnalysisNVD modified 2026-10-20 14:17
  10. StatusAwaiting Analysis → PublishedNVD modified 2026-10-19 12:39
  11. First seenCVSS 7.0NVD modified 2026-10-14 11:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 10