Bug 2422812 (CVE-2025-68284)

Summary:	CVE-2025-68284 kernel: libceph: prevent potential out-of-bounds writes in handle_auth_session_key()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	An out-of-bounds write vulnerability was found in the Ceph authentication handling code in the Linux kernel. The handle_auth_session_key() function uses a length field from network packets without proper validation, potentially allowing out-of-bounds memory writes during connection secret decryption or service ticket processing.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-12-16 16:03:24 UTC

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

libceph: prevent potential out-of-bounds writes in handle_auth_session_key()

The len field originates from untrusted network packets. Boundary
checks have been added to prevent potential out-of-bounds writes when
decrypting the connection secret or processing service tickets.

[ idryomov: changelog ]

Comment 1 Alexander B 2025-12-16 18:55:54 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025121637-CVE-2025-68284-132f@gregkh/T