CVE-2026-74433

rxrpc: Fix UAF in rxgk_issue_challenge()

State: Published
Severity: 9.8 Critical
Published: Aug 15, 2026
Updated: Aug 17, 2026
Reserved: Aug 15, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a to before 844b8525ce503405c462ad67f750bec648720397Affected 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a to before 83bb0ed050e2ad9453d8ef50e4d6e624eac6eed8Affected 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a to before 107a4cb0d47e735830f852d83970d5c81f8e1e08Affected
LinuxLinux	6.16Affected before 6.16Not affected 6.18.40 through 6.18.Not affected 7.1.5 through 7.1.Not affected 7.2 and laterNot affected

References

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