Bug 2541274 (CVE-2026-98097)

Summary:	CVE-2026-98097 kernel: tipc: Dont send random pad bytes in RESET/ACTIVATE messages
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
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:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's Transparent Inter-Process Communication (TIPC) subsystem. This vulnerability allows information disclosure because the kernel fails to clear padding bytes in a fixed-size buffer when preparing network protocol messages. A remote peer or attacker on the network can inspect these messages to retrieve uninitialized kernel memory, potentially exposing sensitive system data.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
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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 2026-09-25 11:13:54 UTC

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

tipc: Dont send random pad bytes in RESET/ACTIVATE messages

The interface name is passed in a fixed length (TIPC_MAX_IF_NAME) buffer.
Replace the strcpy(data, l->if_name) with memcpy() so that the
pad bytes are actually written (l->if_name[] is zero padded)
rather than sending random bytes from the skb to the remote system.

Replace two other strcpy() with strscpy().

Comment 1 Keith Grant 2026-09-25 19:10:35 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98097.mbox