CVE-2026-101308

5.5 Moyenne

Publiée le 15/10/2026 à 09:17 · Modifiée le 19/10/2026 à 23:07 · Analysée par le NVD · Source : secteam@freebsd.org

Description

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.

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Produits concernés

FreeBSD
Freebsd freebsd

Scores CVSS

Version	Score	Source	Vecteur
3.1	5.5 Moyenne	134c704f-9b21-4f2e-91b3-4a467353bcc0	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`

Faiblesses (CWE)

CWE-367

Références

https://security.freebsd.org/advisories/FreeBSD-SA-26:71.sound.asc PatchVendor Advisory

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories