CVE-2026-46018

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux4fa0e81b83503900be277e6273a79651b375e288 < 5436bc1b07d4656f99412dc72871d250d7d55205affected
LinuxLinux4fa0e81b83503900be277e6273a79651b375e288 < 0da05fedf5e1966b7e7d389866cb86fcf09f4b32affected
LinuxLinux4fa0e81b83503900be277e6273a79651b375e288 < f14bd323eec4b4f0ef662520ec852e593ece1d4caffected
LinuxLinux4fa0e81b83503900be277e6273a79651b375e288 < ab5ba9fd138758ddc50222264ff246b31e397abfaffected
LinuxLinux4fa0e81b83503900be277e6273a79651b375e288 < ba036305323814ec1f8655313b2fa6a0f7048716affected
LinuxLinux4fa0e81b83503900be277e6273a79651b375e288 < 4d7893a137eadb6163ea4298bf67d74b811d76efaffected
LinuxLinux4fa0e81b83503900be277e6273a79651b375e288 < a0b78639ef09b2e77974a3de3b1c07f6de3c5e56affected
LinuxLinux4fa0e81b83503900be277e6273a79651b375e288 < 3c318f97dcc50b2e0556a1813bd6958678e881fdaffected
LinuxLinux44f059fb742aac78cffdab5e0d8fe0c9910c1dedaffected
LinuxLinuxc25a53781f61c78bf2a2fa308bbd35b42ba346f6affected
LinuxLinux3.0.81 < 3.1affected
LinuxLinux3.2.47 < 3.3affected
LinuxLinux3.3affected
LinuxLinux0 < 3.3unaffected
LinuxLinux5.10.258 <= 5.10.*unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.140 <= 6.6.*unaffected
LinuxLinux6.12.86 <= 6.12.*unaffected
LinuxLinux6.18.27 <= 6.18.*unaffected
LinuxLinux7.0.4 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References