Bug 1223659 (CVE-2024-26954)

Summary:	VUL-0: CVE-2024-26954: kernel: ksmbd: fix slab-out-of-bounds in smb_strndup_from_utf16()
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	RESOLVED FIXED	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	gabriele.sonnu, vasant.karasulli
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/403723/
Whiteboard:	CVSSv3.1:SUSE:CVE-2024-26954:5.5:(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 2024-05-02 08:29:58 UTC

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

ksmbd: fix slab-out-of-bounds in smb_strndup_from_utf16()

If ->NameOffset of smb2_create_req is smaller than Buffer offset of
smb2_create_req, slab-out-of-bounds read can happen from smb2_open.
This patch set the minimum value of the name offset to the buffer offset
to validate name length of smb2_create_req().

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-26954
https://www.cve.org/CVERecord?id=CVE-2024-26954
https://git.kernel.org/stable/c/3b8da67191e938a63d2736dabb4ac5d337e5de57
https://git.kernel.org/stable/c/4f97e6a9d62cb1fce82fbf4baff44b83221bc178
https://git.kernel.org/stable/c/a80a486d72e20bd12c335bcd38b6e6f19356b0aa
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-26954.mbox
https://bugzilla.redhat.com/show_bug.cgi?id=2278191

Comment 3 Andrea Mattiazzo 2024-05-24 10:25:15 UTC

All done, closing.