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CVE-2026-101305

8.8 high SSVC exploitation: none Analyzed
NVD · CVE.org

renameat(2) did not enforce FD_RESOLVE_BENEATH on its directory arguments. A jailed process could rename a directory relative to a restricted descriptor, then escape the jail root via fchdir(2). This requires the directory to reside on a filesystem that is also reachable from the jail's root. A process in a jail that has received a directory file descriptor from another jail can use these techniques to escape the jail's filesystem root restriction.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 6

  1. Cpes+29 CPE criteria (now 29)NVD modified 2026-10-20 00:20
  2. StatusUndergoing Analysis → AnalyzedNVD modified 2026-10-20 00:20
  3. StatusAwaiting Analysis → Undergoing AnalysisNVD modified 2026-10-16 19:16
  4. CVSS8.8 (v3.1, CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)NVD modified 2026-10-16 19:16
  5. StatusReceived → Awaiting AnalysisNVD modified 2026-10-15 16:17
  6. First seenunscoredNVD modified 2026-10-15 07:17

Affected (CPE criteria) 29

  • cpe:2.3:o:freebsd:freebsd:14.4:-:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:14.4:p1:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:14.4:p2:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:14.4:p3:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:14.4:p4:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:14.4:p5:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:14.4:p6:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:14.4:p7:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:14.4:p8:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:14.4:p9:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:14.5:-:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.0:-:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.0:p1:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.0:p10:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.0:p11:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.0:p12:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.0:p13:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.0:p2:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.0:p3:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.0:p4:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.0:p5:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.0:p6:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.0:p7:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.0:p8:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.0:p9:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.1:-:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.1:p1:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.1:p2:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:15.1:p3:*:*:*:*:*:*

References 1