HighFix available
ALSA: usb-audio: Fix out of bounds reads when finding clock sources
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix out of bounds reads when finding clock sources The current USB-audio driver code doesn't check bLength of each descriptor at traversing for clock descriptors. That is, when a device provides a bogus descriptor with a shorter bLength, the driver might hit out-of-bounds reads. For addressing it, this patch adds sanity checks to the validator functions for the clock descriptor traversal. When the descriptor length is shorter than expected, it's skipped in the loop. For the clock source and clock multiplier descriptors, we can just check bLength against the sizeof() of each descriptor type. OTOH, the clock selector descriptor of UAC2 and UAC3 has an array of bNrInPins elements and two more fields at its tail, hence those have to be checked in addition to the sizeof() check.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.231, 5.15.174, 5.4.287, 6.1.120, 6.11.11, 6.12.2, 6.6.64
- CVEs
- CVE-2024-53150
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 00:58 UTC · Revision 1
Source evidence
ALSA: usb-audio: Fix out of bounds reads when finding clock sources
core-osv · Original sourcePublished 24 Dec 2024, 11:28 UTC
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix out of bounds reads when finding clock sources The current USB-audio driver code doesn't check bLength of each descriptor at traversing for clock descriptors. That is, when a device provides a bogus descriptor with a shorter bLength, the driver might hit out-of-bounds reads. For addressing it, this patch adds sanity checks to the validator functions for the clock descriptor traversal. When the descriptor length is shorter than expected, it's skipped in the loop. For the clock source and clock multiplier descriptors, we can just check bLength against the sizeof() of each descriptor type. OTOH, the clock selector descriptor of UAC2 and UAC3 has an array of bNrInPins elements and two more fields at its tail, hence those have to be checked in addition to the sizeof() check.
osv:CVE-2024-53150
Kernel
Fixed versions: 5.4.287, 5.10.231, 5.15.174, 6.1.120, 6.6.64, 6.11.11, 6.12.2
Complete source record
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