CVE-2026-46018

Description

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.

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EPSS — Exploit Prediction

0.0016

Probability of exploitation

0.05%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/0da05fedf5e1966b7e7d389866cb86fcf09f4b32 https://git.kernel.org/stable/c/3c318f97dcc50b2e0556a1813bd6958678e881fd https://git.kernel.org/stable/c/4d7893a137eadb6163ea4298bf67d74b811d76ef https://git.kernel.org/stable/c/5436bc1b07d4656f99412dc72871d250d7d55205 https://git.kernel.org/stable/c/a0b78639ef09b2e77974a3de3b1c07f6de3c5e56 https://git.kernel.org/stable/c/ab5ba9fd138758ddc50222264ff246b31e397abf https://git.kernel.org/stable/c/ba036305323814ec1f8655313b2fa6a0f7048716 https://git.kernel.org/stable/c/f14bd323eec4b4f0ef662520ec852e593ece1d4c

Frequently Asked Questions

What is 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() 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.

How do I check if I'm vulnerable to CVE-2026-46018? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.