ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd (Linux Linux)

CVE-2025-40275
Non disponible

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Source
NVD
EPSS
EPSS 0.19 % · centile 9 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Deferred

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd In snd_usb_create_streams(), for UAC version 3 devices, the Interface Association Descriptor (IAD) is retrieved via usb_ifnum_to_if(). If this call fails, a fallback routine attempts to obtain the IAD from the next interface and sets a BADD profile. However, snd_usb_mixer_controls_badd() assumes that the IAD retrieved from usb_ifnum_to_if() is always valid, without performing a NULL check. This can lead to a NULL pointer dereference when usb_ifnum_to_if() fails to find the interface descriptor. This patch adds a NULL pointer check after calling usb_ifnum_to_if() in snd_usb_mixer_controls_badd() to prevent the dereference. This issue was discovered by syzkaller, which triggered the bug by sending a crafted USB device descriptor.

Références

Références européennes

Avis du CERT-FR

Produits affectés

ProduitVersions
Linux · Linuxaffected 17156f23e93c0f59e06dd2aaffd06221341caaee < 23aea9c74aeea2625aaf4fbcc6beb9d09e30f9e4 ; affected 17156f23e93c0f59e06dd2aaffd06221341caaee < c5c08965ab96b16361e69a1e2a0e89dbcb99b5a6 ; affected 17156f23e93c0f59e06dd2aaffd06221341caaee < 9f282104627be5fbded3102ff9004f753c55a063 ; affected 17156f23e93c0f59e06dd2aaffd06221341caaee < 2762d3ea9c929ca4094541ca517c317ffa94625b ; affected 17156f23e93c0f59e06dd2aaffd06221341caaee < 57f607c112966c21240c424b33e2cb71e121dcf0 ; affected 17156f23e93c0f59e06dd2aaffd06221341caaee < cbdbfc756f2990942138ed0138da9303b4dbf9ff
Linux · Linuxaffected 4.18 ; unaffected 0 < 4.18 ; unaffected 5.4.302 ≤ 5.4.* ; unaffected 5.10.247 ≤ 5.10.* ; unaffected 5.15.197 ≤ 5.15.* ; unaffected 6.1.159 ≤ 6.1.*

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