Bug 2278427 (CVE-2024-27050)

Summary:	CVE-2024-27050 kernel: libbpf: Use OPTS_SET() macro in bpf_xdp_query()
Product:	[Other] Security Response	Reporter:	Zack Miele <zmiele>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, allarkin, aquini, bhu, chwhite, cye, cyin, dbohanno, debarbos, dfreiber, drow, dvlasenk, esandeen, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, mleitner, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, rysulliv, scweaver, sidakwo, sukulkar, tglozar, tyberry, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.6.23, kernel 6.7.11, kernel 6.8.2, kernel 6.9-rc1	Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in the Linux kernel’s bpf_xdp_query() function, where an out-of-bounds write error can occur due to a misalignment between the older and newer versions of the bpf_xdp_query_opts structure. This issue occurs when an older version of libbpf interacts with a newer version, leading to stack corruption because the latest version of the structure introduced new fields, feature_flags, and xdp_zc_max_segs. As such, the older version, which has smaller struct sizes, may have its stack corrupted by the newer version writing beyond the allocated space. This vulnerability can lead to memory corruption or system instability.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2278428
Bug Blocks:	2278552

Description Zack Miele 2024-05-01 20:27:58 UTC

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

libbpf: Use OPTS_SET() macro in bpf_xdp_query()

The Linux kernel CVE team has assigned CVE-2024-27050 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024050114-CVE-2024-27050-b829@gregkh/T

Comment 2 Zack Miele 2024-05-01 20:28:38 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2278428]

Comment 3 Alex 2024-06-09 12:54:06 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-27050 is: 	SKIP	No affected files built, so skip this CVE	NO			-	-	unknown (where first YES/NO value means if related sources built).