Bug 1224597 (CVE-2024-35840)

Summary:	VUL-0: CVE-2024-35840: kernel: mptcp: use OPTION_MPTCP_MPJ_SYNACK in subflow_finish_connect()
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Davide Benini <davide.benini>
Status:	NEW ---	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	denis.kirjanov, gabriele.sonnu, jlee, mhocko, mkubecek
Version:	unspecified	Flags:	mhocko: needinfo? (mkubecek)
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/406455/
Whiteboard:	CVSSv3.1:SUSE:CVE-2024-35840:5.5:(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 2024-05-20 15:29:57 UTC

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

mptcp: use OPTION_MPTCP_MPJ_SYNACK in subflow_finish_connect()

subflow_finish_connect() uses four fields (backup, join_id, thmac, none)
that may contain garbage unless OPTION_MPTCP_MPJ_SYNACK has been set
in mptcp_parse_option()

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-35840
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-35840.mbox
https://git.kernel.org/stable/c/413b913507326972135d2977975dbff8b7f2c453
https://git.kernel.org/stable/c/51e4cb032d49ce094605f27e45eabebc0408893c
https://git.kernel.org/stable/c/ad3e8f5c3d5c53841046ef7a947c04ad45a20721
https://git.kernel.org/stable/c/76e8de7273a22a00d27e9b8b7d4d043d6433416a
https://git.kernel.org/stable/c/be1d9d9d38da922bd4beeec5b6dd821ff5a1dfeb
https://www.cve.org/CVERecord?id=CVE-2024-35840
https://bugzilla.redhat.com/show_bug.cgi?id=2281282

Comment 1 Joey Lee 2024-05-21 08:49:36 UTC

https://www.suse.com/security/cve/CVE-2024-35840.html
cvss 5.5