Medium 5.5Published May 27, 2026

CVE-2026-46018ALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES

Updated under an hour ago (Oct 27, 2026, 2:40 AM ET)

Does this affect you?

It affects Linux and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 4fa0e81b83503900be277e6273a79651b375e288 before 5436bc1b07d4656f99412dc72871d250d7d55205; 4fa0e81b83503900be277e6273a79651b375e288 builds before 0da05fedf5e1966b7e7d389866cb86fcf09f4b32; from 4fa0e81b83503900be277e6273a79651b375e288 before f14bd323eec4b4f0ef662520ec852e593ece1d4c; from 4fa0e81b83503900be277e6273a79651b375e288 before ab5ba9fd138758ddc50222264ff246b31e397abf; from 4fa0e81b83503900be277e6273a79651b375e288 before ba036305323814ec1f8655313b2fa6a0f7048716; 4fa0e81b83503900be277e6273a79651b375e288 builds before 4d7893a137eadb6163ea4298bf67d74b811d76ef; from 4fa0e81b83503900be277e6273a79651b375e288 before a0b78639ef09b2e77974a3de3b1c07f6de3c5e56; 4fa0e81b83503900be277e6273a79651b375e288 builds before 3c318f97dcc50b2e0556a1813bd6958678e881fd; and 4 more ranges	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	all versions	CISA ADP
linux linux_kernel linux:linux_kernel	from 3.0.81 before 3.1; from 3.2.47 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.86; from 6.13 before 6.18.27; from 6.19 before 7.0.4	NVD

References

References

https://git.kernel.org/stable/c/5436bc1b07d4656f99412dc72871d250d7d55205	patch
https://git.kernel.org/stable/c/0da05fedf5e1966b7e7d389866cb86fcf09f4b32	patch
https://git.kernel.org/stable/c/f14bd323eec4b4f0ef662520ec852e593ece1d4c	patch
https://git.kernel.org/stable/c/ab5ba9fd138758ddc50222264ff246b31e397abf	patch
https://git.kernel.org/stable/c/ba036305323814ec1f8655313b2fa6a0f7048716	patch
https://git.kernel.org/stable/c/4d7893a137eadb6163ea4298bf67d74b811d76ef	patch
https://git.kernel.org/stable/c/a0b78639ef09b2e77974a3de3b1c07f6de3c5e56	patch
https://git.kernel.org/stable/c/3c318f97dcc50b2e0556a1813bd6958678e881fd	patch
https://cert-portal.siemens.com/productcert/html/ssa-784472.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.