What is CVE-2026-46018?

CVE-2026-46018 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 3.0.81 onward and patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46018 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46018?

CVE-2026-46018 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-46018?

Yes, CVE-2026-46018 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 3.0.81 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46018 actively exploited?

CVE-2026-46018 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

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.

Package Linux Kernel

Published 2026-05-27

Last modified 2026-06-01

Patch available

Yes

Affected versions

Linux kernel versions 3.0.81, 3.2.47, 3.3 and later are affected. Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4, 7.1-rc1 and their respective stable series.

Affected from

≥ 3.0.81 ≥ 3.2.47 ≥ 3.3

Fixed in

✓ 5.10.258 5.10.x ✓ 5.15.209 5.15.x ✓ 6.1.175 6.1.x ✓ 6.6.140 6.6.x ✓ 6.12.86 6.12.x ✓ 6.18.27 6.18.x ✓ 7.0.4 7.0.x ✓ 7.1-rc1

References

The following references provide additional information about CVE-2026-46018 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/0da05fedf5e1966b7e7d389866cb86fcf09f4b32
Patch
Kernel patch commit
https://git.kernel.org/stable/c/3c318f97dcc50b2e0556a1813bd6958678e881fd
Patch
Kernel patch commit
https://git.kernel.org/stable/c/4d7893a137eadb6163ea4298bf67d74b811d76ef
Patch

8 patch commits total View all on NVD

Frequently asked questions

What is CVE-2026-46018?

CVE-2026-46018 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.0.81 onward and has been patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46018 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-46018?

Yes — CVE-2026-46018 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 3.0.81 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46018 actively exploited?

No — CVE-2026-46018 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.