cbcvebase.
CVE-2025-40275
published 2025-12-06

CVE-2025-40275: In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd In…

PriorityP426high7.8
EPSS
0.19%
9.2th percentile
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.

Affected

30 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.159-1 (bookworm)linux 6.1.159-1 (bookworm)
debianlinux-6.1< linux 6.1.159-1 (bookworm)linux 6.1.159-1 (bookworm)
linuxlinux
linuxlinux>= 17156f23e93c0f59e06dd2aaffd06221341caaee < 23aea9c74aeea2625aaf4fbcc6beb9d09e30f9e423aea9c74aeea2625aaf4fbcc6beb9d09e30f9e4
linuxlinux>= 17156f23e93c0f59e06dd2aaffd06221341caaee < c5c08965ab96b16361e69a1e2a0e89dbcb99b5a6c5c08965ab96b16361e69a1e2a0e89dbcb99b5a6
linuxlinux>= 17156f23e93c0f59e06dd2aaffd06221341caaee < 9f282104627be5fbded3102ff9004f753c55a0639f282104627be5fbded3102ff9004f753c55a063
linuxlinux>= 17156f23e93c0f59e06dd2aaffd06221341caaee < 2762d3ea9c929ca4094541ca517c317ffa94625b2762d3ea9c929ca4094541ca517c317ffa94625b
linuxlinux>= 17156f23e93c0f59e06dd2aaffd06221341caaee < 57f607c112966c21240c424b33e2cb71e121dcf057f607c112966c21240c424b33e2cb71e121dcf0
linuxlinux>= 17156f23e93c0f59e06dd2aaffd06221341caaee < cbdbfc756f2990942138ed0138da9303b4dbf9ffcbdbfc756f2990942138ed0138da9303b4dbf9ff
linuxlinux>= 17156f23e93c0f59e06dd2aaffd06221341caaee < 85568535893600024d7d8794f4f8b6428b521e0c85568535893600024d7d8794f4f8b6428b521e0c
linuxlinux>= 17156f23e93c0f59e06dd2aaffd06221341caaee < 632108ec072ad64c8c83db6e16a7efee29ebfb74632108ec072ad64c8c83db6e16a7efee29ebfb74
linuxlinux_kernel>= 0 < 5.10.247-15.10.247-1
linuxlinux_kernel>= 0 < 6.1.159-16.1.159-1
linuxlinux_kernel>= 0 < 6.12.63-16.12.63-1
linuxlinux_kernel>= 0 < 6.17.9-16.17.9-1
linuxlinux_kernel>= 0 < 5.15.0-173.1835.15.0-173.183
linuxlinux_kernel>= 0 < 6.8.0-106.1066.8.0-106.106
linuxlinux_kernel>= 0 < 6.17.0-14.146.17.0-14.14
linuxlinux_kernel>= 4.18.0 < 5.4.3025.4.302
linuxlinux_kernel>= 5.11.0 < 5.15.1975.15.197
linuxlinux_kernel>= 5.16.0 < 6.1.1596.1.159
linuxlinux_kernel>= 5.5.0 < 5.10.2475.10.247
linuxlinux_kernel>= 6.13.0 < 6.17.96.17.9
linuxlinux_kernel>= 6.2.0 < 6.6.1176.6.117
linuxlinux_kernel>= 6.7.0 < 6.12.596.12.59

CVSS provenance

osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_msrc5.5MEDIUM
vendor_redhat4.3LOW
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