Bug 1227795 (CVE-2024-40993)

Summary:	VUL-0: CVE-2024-40993: kernel: netfilter: ipset: Fix suspicious rcu_dereference_protected()
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Kernel Bugs <kernel-bugs>
Status:	RESOLVED FIXED	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P5 - None	CC:	rfrohl
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/413920/
Whiteboard:	CVSSv3.1:SUSE:CVE-2024-40993:5.5:(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 2024-07-15 12:32:04 UTC

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

netfilter: ipset: Fix suspicious rcu_dereference_protected()

When destroying all sets, we are either in pernet exit phase or
are executing a "destroy all sets command" from userspace. The latter
was taken into account in ip_set_dereference() (nfnetlink mutex is held),
but the former was not. The patch adds the required check to
rcu_dereference_protected() in ip_set_dereference().

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-40993
https://www.cve.org/CVERecord?id=CVE-2024-40993
https://git.kernel.org/stable/c/3799d02ae4208af08e81310770d8754863a246a1
https://git.kernel.org/stable/c/3fc09e1ca854bc234e007a56e0f7431f5e2defb5
https://git.kernel.org/stable/c/523bed6489e089dd8040e72453fb79da47b144c2
https://git.kernel.org/stable/c/72d9611968867cc4c5509e7708b1507d692b797a
https://git.kernel.org/stable/c/788d585e62f487bc4536d454937f737b70d39a33
https://git.kernel.org/stable/c/8ecd06277a7664f4ef018abae3abd3451d64e7a6
https://git.kernel.org/stable/c/94dd411c18d7fff9e411555d5c662d29416501e4
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-40993.mbox

Comment 1 Robert Frohl 2024-07-15 12:41:48 UTC

does not affect our kernels, closing