What is CVE-2026-63873?

CVE-2026-63873 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 6.16 onward and patched in 6.18.36, 7.0.13 and 7.1. CVE-2026-63873 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-63873?

CVE-2026-63873 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-63873?

Yes, CVE-2026-63873 has been patched. Fixed versions include 6.18.36, 7.0.13 and 7.1. If you are running Linux kernel 6.16 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-63873 actively exploited?

CVE-2026-63873 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-63873

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix mm_struct reference leak in aie2_populate_range() aie2_populate_range() jumps back to the again label without calling mmput(mm), leaking a reference to the mm_struct. Add the missing mmput() before jumping to again.

Package Linux Kernel

Published 2026-07-19

Last modified 2026-07-19

Patch available

Yes

Affected versions

Linux kernel versions 6.16 and later are affected. Fixed in 6.18.36, 7.0.13, 7.1 and their respective stable series.

Affected from

≥ 6.16

Fixed in

✓ 6.18.36 6.18.x ✓ 7.0.13 7.0.x ✓ 7.1

References

3 total

Frequently asked questions

What is CVE-2026-63873?

CVE-2026-63873 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.16 onward and has been patched in 6.18.36, 7.0.13 and 7.1. CVE-2026-63873 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-63873?

Yes — CVE-2026-63873 has been patched. Fixed versions include 6.18.36, 7.0.13 and 7.1. If you are running Linux kernel 6.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-63873 actively exploited?

No — CVE-2026-63873 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.