Bug 2275752 (CVE-2024-26850)

Summary:	CVE-2024-26850 kernel: mm/debug_vm_pgtable: fix BUG_ON with pud advanced test
Product:	[Other] Security Response	Reporter:	Robb Gatica <rgatica>
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, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, mleitner, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, scweaver, sidakwo, sukulkar, tglozar, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.6.21, kernel 6.7.9, kernel 6.8	Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in the pud_advanced_tests() function in the Linux kernel, caused by inadequate handling of PUD entries in the presence of debugging checks, which could lead to a kernel panic.	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:	2275753
Bug Blocks:	2275739

Description Robb Gatica 2024-04-17 19:35:18 UTC

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

mm/debug_vm_pgtable: fix BUG_ON with pud advanced test

The Linux kernel CVE team has assigned CVE-2024-26850 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024041754-CVE-2024-26850-f608@gregkh/T

Comment 1 Robb Gatica 2024-04-17 19:35:53 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2275753]

Comment 2 Rohit Keshri 2024-04-29 12:15:35 UTC

This flaw does not seems to have a security threat.