ALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 92% of all CVEs
observed exploitation
nono source reports it
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 products
Linux · LinuxReferences
https://git.kernel.org/stable/c/0da05fedf5e1966b7e7d389866cb86fcf09f4b32https://git.kernel.org/stable/c/3c318f97dcc50b2e0556a1813bd6958678e881fdhttps://git.kernel.org/stable/c/4d7893a137eadb6163ea4298bf67d74b811d76efhttps://git.kernel.org/stable/c/5436bc1b07d4656f99412dc72871d250d7d55205https://git.kernel.org/stable/c/a0b78639ef09b2e77974a3de3b1c07f6de3c5e56https://git.kernel.org/stable/c/ab5ba9fd138758ddc50222264ff246b31e397abfhttps://git.kernel.org/stable/c/ba036305323814ec1f8655313b2fa6a0f7048716https://git.kernel.org/stable/c/f14bd323eec4b4f0ef662520ec852e593ece1d4c