CVE-2026-49421
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
39/100
Published: 2026-08-19
Modified: 2026-11-09
First seen: 2026-11-09
Status: active
Attack Surface
Low Complexity
No Interaction
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
High
A:
High
Description
The kernel function that implements unlinkat(2) and funlinkat(2) validated the AT_RESOLVE_BENEATH flag but failed to pass it through to the underlying path lookup. The flag was silently dropped, so path resolution was not actually restricted. A process that uses AT_RESOLVE_BENEATH with unlinkat(2) or funlinkat(2) to confine path resolution can in fact resolve paths above the starting directory. A caller relying on this flag for path containment may delete files outside the intended directory tree.
Weakness Classification (1)
Affected Software (38)
| Vendor | Product | Version |
|---|---|---|
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 15.0 |
| freebsd | freebsd | 15.0 |
| freebsd | freebsd | 15.0 |
| freebsd | freebsd | 15.0 |
| freebsd | freebsd | 15.0 |
| freebsd | freebsd | 15.0 |
Showing 30 of 38 entries
References & Advisories (1)
Vendor Advisory