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CVE-2026-46018
published 2026-05-27

CVE-2026-46018: In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES parse_uac2_sample_rate_range()…

medium5.5
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES parse_uac2_sample_rate_range() caps the number of enumerated rates at MAX_NR_RATES, but it only breaks out of the current rate loop. A malformed UAC2 RANGE response with additional triplets continues parsing the remaining triplets and repeatedly prints "invalid uac2 rates" while probe still holds register_mutex. Stop the whole parse once the cap is reached and return the number of rates collected so far.

Affected

14 ranges
VendorProductVersion rangeFixed in
linuxlinux——
linuxlinux——
linuxlinux——
linuxlinux>= 3.0.81 < 3.13.1
linuxlinux>= 3.2.47 < 3.33.3
linuxlinux>= 4fa0e81b83503900be277e6273a79651b375e288 < 5436bc1b07d4656f99412dc72871d250d7d552055436bc1b07d4656f99412dc72871d250d7d55205
linuxlinux>= 4fa0e81b83503900be277e6273a79651b375e288 < 0da05fedf5e1966b7e7d389866cb86fcf09f4b320da05fedf5e1966b7e7d389866cb86fcf09f4b32
linuxlinux>= 4fa0e81b83503900be277e6273a79651b375e288 < f14bd323eec4b4f0ef662520ec852e593ece1d4cf14bd323eec4b4f0ef662520ec852e593ece1d4c
linuxlinux>= 4fa0e81b83503900be277e6273a79651b375e288 < ab5ba9fd138758ddc50222264ff246b31e397abfab5ba9fd138758ddc50222264ff246b31e397abf
linuxlinux>= 4fa0e81b83503900be277e6273a79651b375e288 < ba036305323814ec1f8655313b2fa6a0f7048716ba036305323814ec1f8655313b2fa6a0f7048716
linuxlinux>= 4fa0e81b83503900be277e6273a79651b375e288 < 4d7893a137eadb6163ea4298bf67d74b811d76ef4d7893a137eadb6163ea4298bf67d74b811d76ef
linuxlinux>= 4fa0e81b83503900be277e6273a79651b375e288 < a0b78639ef09b2e77974a3de3b1c07f6de3c5e56a0b78639ef09b2e77974a3de3b1c07f6de3c5e56
linuxlinux>= 4fa0e81b83503900be277e6273a79651b375e288 < 3c318f97dcc50b2e0556a1813bd6958678e881fd3c318f97dcc50b2e0556a1813bd6958678e881fd
linuxlinux_kernel——