CVE-2026-101308

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-101308
When an audio channel's buffer needs to be resized, the sound(4) driver checks that the buffer is not memory-mapped and then drops the channel lock to allocate a new buffer. An mmap(2) call on another thread can complete during this window, after which the resize path frees the now-mapped buffer without rechecking. An unprivileged local user with access to a sound device can exploit this race to trigger a use-after-free in the kernel, potentially escalating privileges.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://security.freebsd.org/advisories/FreeBSD-SA-26:71.sound.asc Patch Vendor Advisory
Configurations

Configuration 1 (hide)

OR 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:p10:*:*:*:*:*:*
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:14.5:p1:*:*:*:*:*:*
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:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:15.1:p4:*:*:*:*:*:*
History

19 Oct 2026, 21:07

Type Values Removed Values Added
First Time Freebsd freebsd
Freebsd
References () https://security.freebsd.org/advisories/FreeBSD-SA-26:71.sound.asc - () https://security.freebsd.org/advisories/FreeBSD-SA-26:71.sound.asc - Patch, Vendor Advisory
CPE cpe:2.3:o:freebsd:freebsd:14.4:p7:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:15.1:p3:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.4:p5:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.4:p4:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.5:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.4:p3:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.4:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:15.1:p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.4:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.4:p8:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.4:p10:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:15.1:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.4:p6:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:15.1:p4:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.5:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.4:p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:15.1:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:14.4:p9:*:*:*:*:*:*

15 Oct 2026, 16:17

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

15 Oct 2026, 07:17

Type Values Removed Values Added
New CVE
Information

Published : 2026-10-15 07:17

Updated : 2026-10-19 21:07

NVD link : CVE-2026-101308

Mitre link : CVE-2026-101308

CVE.ORG link : CVE-2026-101308

JSON object : View

Products Affected

freebsd

  • freebsd
CWE
CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition