Bug 2516748 (CVE-2026-74433) - CVE-2026-74433 kernel: rxrpc: Fix UAF in rxgk_issue_challenge()
Summary: CVE-2026-74433 kernel: rxrpc: Fix UAF in rxgk_issue_challenge()
Keywords:
Status: NEW
Alias: CVE-2026-74433
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-15 06:31 UTC by OSIDB Bzimport
Modified: 2026-10-26 05:56 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-15 06:31:29 UTC 
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.
Comment 1 Keith Grant 2026-08-20 22:50:53 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081515-CVE-2026-74433-cada@gregkh/T
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