Bug 2468144 (CVE-2026-43419)

Summary:	CVE-2026-43419 kernel: ceph: fix memory leaks in ceph_mdsc_build_path()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
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 Ceph file system component. Improper memory deallocation within the `ceph_mdsc_build_path()` function can lead to memory leaks. This occurs when the "path" pointer, obtained by `__getname()`, is not properly freed in error handling paths. Over time, these memory leaks could lead to resource exhaustion, potentially resulting in a Denial of Service (DoS) for the system.	Story Points:	---
Clone Of:		Environment:
Last Closed:		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 2026-05-08 15:01:27 UTC

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

ceph: fix memory leaks in ceph_mdsc_build_path()

Add __putname() calls to error code paths that did not free the "path"
pointer obtained by __getname().  If ownership of this pointer is not
passed to the caller via path_info.path, the function must free it
before returning.

Comment 1 Keith Grant 2026-05-08 23:04:58 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050846-CVE-2026-43419-1421@gregkh/T