Bug 2528727 (CVE-2026-80877)

Summary:	CVE-2026-80877 kernel: afs: Fix vllist leak
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
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Doc Text:	A flaw was found in the Linux kernel's AFS (Andrew File System) module. This vulnerability occurs in the `afs_update_cell()` function when it attempts to update a volume list (`vllist`) that is empty. Under specific conditions, the old `vllist` is not properly released, leading to a memory leak. A local attacker could potentially exploit this flaw to cause a denial of service due to system resource exhaustion.	Story Points:	---
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-09-04 17:14:00 UTC

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

afs: Fix vllist leak

Fix a leak of the new vllist in afs_update_cell() in the event that it is an
empty list (nr_servers == 0), in which case the old list isn't displaced
unless the old list is also empty.

Comment 1 Mauro Matteo Cascella 2026-09-08 12:42:32 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80877.mbox