Bug 1223201 (CVE-2024-26908)

Summary:	VUL-0: REJECTED: CVE-2024-26908: kernel: x86/xen: Add some null pointer checking to smp.c
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	RESOLVED INVALID	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	camila.matos, carlos.lopez, mkoutny, osalvador, rfrohl
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/402403/
Whiteboard:	CVSSv3.1:SUSE:CVE-2024-26908:5.5:(AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description SMASH SMASH 2024-04-22 09:38:26 UTC

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

x86/xen: Add some null pointer checking to smp.c

kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-26908
https://www.cve.org/CVERecord?id=CVE-2024-26908
https://git.kernel.org/stable/c/025a8a96c7ef3ff24a9b4753a7e851ba16f11bfc
https://git.kernel.org/stable/c/3693bb4465e6e32a204a5b86d3ec7e6b9f7e67c2
https://git.kernel.org/stable/c/70a33a629090130d731fc1e1ad498bb672eea165
https://git.kernel.org/stable/c/8082bccb7ac480ceab89b09c53d20c78ae54f9fa
https://git.kernel.org/stable/c/a9bbb05c0c04b49a1f7f05fd03826321dca2b8d4
https://git.kernel.org/stable/c/d211e8128c0e2122512fa5e859316540349b54af
https://git.kernel.org/stable/c/eb279074badac0bbe28749906562d648ca4bc750
https://git.kernel.org/stable/c/f49c513f46dc19bf01ffad2aaaf234d7f37f6799
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-26908.mbox
https://bugzilla.redhat.com/show_bug.cgi?id=2275744

Comment 2 Jürgen Groß 2024-04-29 11:17:09 UTC

I don't see any security aspect for the issue the patch is fixing.

It is nothing an unprivileged user could trigger, which is the reason why we in the Xen security team did _not_ issue an XSA for this fix.

I think this CVE should be disputed.

Comment 5 Robert Frohl 2024-04-30 08:45:51 UTC

REJECTED:

https://lore.kernel.org/linux-cve-announce/2024043042-REJECTED-6155@gregkh/T/#u