Bug 2271690 (CVE-2023-52621)

Summary:	CVE-2023-52621 kernel: bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers
Product:	[Other] Security Response	Reporter:	Marco Benatto <mbenatto>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	acaringi, allarkin, aquini, bhu, chwhite, cye, cyin, dbohanno, debarbos, dfreiber, drow, dvlasenk, esandeen, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jforbes, 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 6.1.77, kernel 6.6.16, kernel 6.7.4, kernel 6.8	Doc Type:	If docs needed, set a value
Doc Text:		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:	2271691
Bug Blocks:	2271782

Description Marco Benatto 2024-03-26 21:41:52 UTC

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

bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers

The Linux kernel CVE team has assigned CVE-2023-52621 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/20240326171931.1354035-4-lee@kernel.org/T

Comment 1 Marco Benatto 2024-03-26 21:42:26 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2271691]

Comment 5 Justin M. Forbes 2024-03-27 20:36:00 UTC

This was fixed for Fedora with the 6.7.4 stable kernel updates.

Comment 6 Alex 2024-06-09 16:28:08 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2023-52621 is: CHECK	Maybe valid. Check manually. with impact LOW (that is an approximation based on flags LOCK WARNONLY BPF  ; these flags parsed automatically based on patch data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.

Comment 7 errata-xmlrpc 2024-11-12 09:20:52 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:9315 https://access.redhat.com/errata/RHSA-2024:9315