Bug 2482174 (CVE-2026-46012)

Summary:	CVE-2026-46012 kernel: rxrpc: Fix memory leaks in rxkad_verify_response()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in the Linux kernel's `rxrpc` subsystem. The `rxkad_verify_response()` function, which handles verification of responses, did not consistently release allocated memory. This oversight could lead to a memory leak, potentially causing system instability and a denial of service (DoS) over time due to resource exhaustion.	Story Points:	---
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Regression:	---	Mount Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-05-27 15:14:48 UTC

In the Linux kernel, the following vulnerability has been resolved:

rxrpc: Fix memory leaks in rxkad_verify_response()

Fix rxkad_verify_response() to free the ticket and the server key under all
circumstances by initialising the ticket pointer to NULL and then making
all paths through the function after the first allocation has been done go
through a single common epilogue that just releases everything - where all
the releases skip on a NULL pointer.

Comment 1 Keith Grant 2026-05-27 20:51:38 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052744-CVE-2026-46012-f467@gregkh/T