What is CVE-2026-74433?

CVE-2026-74433 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 6.16 onward and patched in 6.18.40, 7.1.5 and 7.2-rc1. CVE-2026-74433 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-74433?

CVE-2026-74433 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-74433?

Yes, CVE-2026-74433 has been patched. Fixed versions include 6.18.40, 7.1.5 and 7.2-rc1. 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-2026-74433 actively exploited?

CVE-2026-74433 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-74433

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix UAF in rxgk_issue_challenge() Fix rxgk_issue_challenge() to free the page containing the challenge content after invoking the tracepoint as the whdr passed to the tracepoint points into the page just freed.

Package Linux Kernel

Published 2026-08-15

Last modified 2026-08-15

Patch available

Yes

Affected versions

Linux kernel versions 6.16 and later are affected. Fixed in 6.18.40, 7.1.5, 7.2-rc1 and their respective stable series.

Affected from

≥ 6.16

Fixed in

✓ 6.18.40 6.18.x ✓ 7.1.5 7.1.x ✓ 7.2-rc1

References

3 total

Frequently asked questions

What is CVE-2026-74433?

CVE-2026-74433 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.16 onward and has been patched in 6.18.40, 7.1.5 and 7.2-rc1. CVE-2026-74433 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-74433?

Yes. CVE-2026-74433 has been patched. Fixed versions include 6.18.40, 7.1.5 and 7.2-rc1. 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-2026-74433 actively exploited?

No. CVE-2026-74433 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.