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TI-2025-14186 Aliases CVE-2025-15547GHSA-vpcc-r2qv-r2q4

Jail escape by a privileged user via nullfs

Priority LOW 39CWE-269Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-269.

Summary

By default, jailed processes cannot mount filesystems, including nullfs(4). However, the allow.mount.nullfs option enables mounting nullfs filesystems, subject to privilege checks. If a privileged user within a jail is able to nullfs-mount directories, a limitation of the kernel's path lookup logic allows that user to escape the jail's chroot, yielding access to the full filesystem of the host or parent jail. In a jail configured to allow nullfs(4) mounts from within the jail, the jailed root user can escape the jail's filesystem root.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00127 2nd percentileScored 2026-11-07
Fix Fixed FreeBSD (FreeBSD): p8, p9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FreeBSDFreeBSD14.3-RELEASE to before p8; 13.5-RELEASE to before p9p8, p9Patch availableCNA
  • FreeBSD VendorFreeBSD Affected 14.3-RELEASE to before p8; 13.5-RELEASE to before p9 Fixed in p8, p9 Patch available CNA

CPE configurations NVD · 17

CPEVersionsRoleVendor
cpe:2.3:o:freebsd:freebsd:13.5:-:*:*:*:*:*:*13.5VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.5:p1:*:*:*:*:*:*13.5 p1VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.5:p2:*:*:*:*:*:*13.5 p2VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.5:p3:*:*:*:*:*:*13.5 p3VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.5:p4:*:*:*:*:*:*13.5 p4VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.5:p5:*:*:*:*:*:*13.5 p5VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.5:p6:*:*:*:*:*:*13.5 p6VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.5:p7:*:*:*:*:*:*13.5 p7VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:13.5:p8:*:*:*:*:*:*13.5 p8VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:14.3:-:*:*:*:*:*:*14.3VulnerableFreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.5:-:*:*:*:*:*:* Versions 13.5 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.5:p1:*:*:*:*:*:* Versions 13.5 p1 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.5:p2:*:*:*:*:*:* Versions 13.5 p2 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.5:p3:*:*:*:*:*:* Versions 13.5 p3 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.5:p4:*:*:*:*:*:* Versions 13.5 p4 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.5:p5:*:*:*:*:*:* Versions 13.5 p5 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.5:p6:*:*:*:*:*:* Versions 13.5 p6 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.5:p7:*:*:*:*:*:* Versions 13.5 p7 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:13.5:p8:*:*:*:*:*:* Versions 13.5 p8 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:14.3:-:*:*:*:*:*:* Versions 14.3 Vulnerable ·FreeBSD
Show 7 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:freebsd:freebsd:14.3:p1:*:*:*:*:*:*14.3 p1VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:14.3:p2:*:*:*:*:*:*14.3 p2VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:14.3:p3:*:*:*:*:*:*14.3 p3VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:14.3:p4:*:*:*:*:*:*14.3 p4VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:14.3:p5:*:*:*:*:*:*14.3 p5VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:14.3:p6:*:*:*:*:*:*14.3 p6VulnerableFreeBSD
cpe:2.3:o:freebsd:freebsd:14.3:p7:*:*:*:*:*:*14.3 p7VulnerableFreeBSD
  • cpe:2.3:o:freebsd:freebsd:14.3:p1:*:*:*:*:*:* Versions 14.3 p1 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:14.3:p2:*:*:*:*:*:* Versions 14.3 p2 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:14.3:p3:*:*:*:*:*:* Versions 14.3 p3 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:14.3:p4:*:*:*:*:*:* Versions 14.3 p4 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:14.3:p5:*:*:*:*:*:* Versions 14.3 p5 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:14.3:p6:*:*:*:*:*:* Versions 14.3 p6 Vulnerable ·FreeBSD
  • cpe:2.3:o:freebsd:freebsd:14.3:p7:*:*:*:*:*:* Versions 14.3 p7 Vulnerable ·FreeBSD

Remediation

  • Fix · CNA FreeBSD (FreeBSD) Fixed in p8, p9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-15547
  2. 2026-10-03 Alias added: GHSA-vpcc-r2qv-r2q4

References

Advisory 1

  • TI-2011-04182 Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT… CVSS 2.0HIGH 10.0
  • TI-2007-03684 Integer overflow in print-bgp.c in the BGP dissector in tcpdump 3.9.6 and earlier allows… CVSS 3.1CRITICAL 9.8
  • TI-2002-00376 Integer overflow in xdr_array function in RPC servers for operating systems that use… CVSS 3.1CRITICAL 9.8
  • TI-2024-05929 Openssh: regresshion - race condition in ssh allows rce/dos CVSS 3.1HIGH 8.1
  • TI-2003-00437 Off-by-one error in the fb_realpath() function, as derived from the realpath function in… CVSS 3.1CRITICAL 9.8
  • TI-2003-00642 The prescan function in Sendmail 8.12.9 allows remote attackers to execute arbitrary code… CVSS 2.0HIGH 10.0
See all 576 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences