ALSA: usb-audio: Add sanity check for OOB writes at silencing (Linux Linux)

CVE-2026-43279
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.12 % · centile 2 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Add sanity check for OOB writes at silencing At silencing the playback URB packets in the implicit fb mode before the actual playback, we blindly assume that the received packets fit with the buffer size. But when the setup in the capture stream differs from the playback stream (e.g. due to the USB core limitation of max packet size), such an inconsistency may lead to OOB writes to the buffer, resulting in a crash. For addressing it, add a sanity check of the transfer buffer size at prepare_silent_urb(), and stop the data copy if the received data overflows. Also, report back the transfer error properly from there, too. Note that this doesn't fix the root cause of the playback error itself, but this merely covers the kernel Oops.

Faiblesses (CWE)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 < fa01973bb79d70c4736b6a4b2de99fbb2cbc8d1f ; affected c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 < 780dc57794a217b49994fa1d0b42465fb10a00aa ; affected c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 < 8995fc0e00b3fee9bf7ecb3d836b635b730c1049 ; affected c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 < fc9e5af60dc199051dc202ae78e1fe76a9977a5e ; affected c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 < 6af16f1b8649df4c00d6ced924bdd8b72c885b6a ; affected c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 < ccaf9296763be4f76b59e2cac377006016c34435
Linux · Linuxaffected 3.5 ; unaffected 0 < 3.5 ; unaffected 5.15.202 ≤ 5.15.* ; unaffected 6.1.165 ≤ 6.1.* ; unaffected 6.6.128 ≤ 6.6.* ; unaffected 6.12.75 ≤ 6.12.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD