What is CVE-2026-72236?

CVE-2026-72236 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 3.4 onward and patched in 6.6.145, 6.12.97, 6.18.40 and others. CVE-2026-72236 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-72236?

CVE-2026-72236 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-72236?

Yes, CVE-2026-72236 has been patched. Fixed versions include 6.6.145, 6.12.97, 6.18.40 and others. If you are running Linux kernel 3.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-72236 actively exploited?

CVE-2026-72236 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-72236

In the Linux kernel, the following vulnerability has been resolved: s390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init() ev variable is userspace controlled via event->attr.config and used as an array index after bounds checking, but without speculation barriers. Add the missing array_index_nospec() call to prevent speculative execution.

Package Linux Kernel

Published 2026-08-15

Last modified 2026-08-15

Patch available

Yes

Affected versions

Linux kernel versions 3.4 and later are affected. Fixed in 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2-rc4 and their respective stable series.

Affected from

≥ 3.4

Fixed in

✓ 6.6.145 6.6.x ✓ 6.12.97 6.12.x ✓ 6.18.40 6.18.x ✓ 7.1.5 7.1.x ✓ 7.2-rc4

References

5 total

Frequently asked questions

What is CVE-2026-72236?

CVE-2026-72236 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.4 onward and has been patched in 6.6.145, 6.12.97, 6.18.40 and others. CVE-2026-72236 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-72236?

Yes. CVE-2026-72236 has been patched. Fixed versions include 6.6.145, 6.12.97, 6.18.40 and others. If you are running Linux kernel 3.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-72236 actively exploited?

No. CVE-2026-72236 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.