Vulnerability details
CVE-2026-101306
FreeBSD FreeBSD
Multiple jail filesystem root escapes
CVSS 3.1
9.8Critical
Official description
SCM_RIGHTS file descriptor passing did not preserve FD_RESOLVE_BENEATH when a descriptor was transferred. A process could clear the restriction by sending the descriptor to itself over a Unix domain socket. 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.8Critical | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| FreeBSD | FreeBSD | 14.4-RELEASE ≤ v < p10 | CVEProject cvelistV5 (CNA) |
| FreeBSD | FreeBSD | 14.5-RELEASE ≤ v < p1 | CVEProject cvelistV5 (CNA) |
| FreeBSD | FreeBSD | 15.0-RELEASE ≤ v < p14 | CVEProject cvelistV5 (CNA) |
| FreeBSD | FreeBSD | 15.1-RELEASE ≤ v < p4 | CVEProject cvelistV5 (CNA) |
References and advisories
1
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Details
- Published
- 2026-10-15
- Last updated
- 2026-10-16
- State
- Published
- Assigner (CNA)
- freebsd
Exploit prediction (EPSS)
0.26%
Probability of exploitation in 30 days
19%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-273Improper Check for Dropped Privileges
- CWE-281Improper Preservation of Permissions