Bug 2278348 (CVE-2024-26977)

Summary:	CVE-2024-26977 kernel: pci_iounmap(): Fix MMIO mapping leak
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 5.15.154, kernel 6.1.84, kernel 6.6.24, kernel 6.7.12, kernel 6.8.3, kernel 6.9-rc1	Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in the pci_iounmap() function in the Linux Kernel, where a lack of proper checks can result in memory leakage. This occurs due to the #ifdef ARCH_HAS_GENERIC_IOPORT_MAP macro which also guards the iounmap() function, causing MMIO mappings to leak. This issue can lead to resource exhaustion over time.	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:	2278349
Bug Blocks:	2278552

Description Zack Miele 2024-05-01 19:35:15 UTC

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

pci_iounmap(): Fix MMIO mapping leak

The Linux kernel CVE team has assigned CVE-2024-26977 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024050133-CVE-2024-26977-cf63@gregkh/T

Comment 1 Zack Miele 2024-05-01 19:35:46 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2278349]

Comment 2 Alex 2024-06-09 12:45:04 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-26977 is: 	SKIP	The Fixes patch not applied yet, so unlikely that actual: 316e8d79a0959c302b0c462ab64b069599f10eef	YES			NO	NO	unknown (where first YES/NO value means if related sources built).