Bug 2265794 (CVE-2023-52458)

Summary:	CVE-2023-52458 kernel: block: null pointer dereference in ioctl.c when length and logical block size are misaligned
Product:	[Other] Security Response	Reporter:	Patrick Del Bello <pdelbell>
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, kyoshida, ldoskova, lgoncalv, lzampier, mleitner, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, rysulliv, scweaver, 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 6.8-rc1	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the Linux kernel's block subsystem, where a NULL pointer dereference occurs if partitions are created or resized with a size that is not a multiple of the logical block size. This flaw allows a privileged attacker to cause a denial of service.	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:	2265806
Bug Blocks:	2265790

Description Patrick Del Bello 2024-02-24 11:20:03 UTC

Before calling add partition or resize partition, there is no check on whether the length is aligned with the logical block size.
If the logical block size of the disk is larger than 512 bytes, then the partition size maybe not the multiple of the logical block size, and when the last sector is read, bio_truncate() will adjust the bio size, resulting in an IO error if the size of the read command is smaller than
the logical block size.If integrity data is supported, this will also result in a null pointer dereference when calling bio_integrity_free.

Comment 1 Patrick Del Bello 2024-02-24 11:25:03 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2265806]

Comment 3 Justin M. Forbes 2024-02-27 00:17:23 UTC

	Fixed in 5.15.148 with commit 5010c2712096
	Fixed in 6.1.75 with commit ef31cc877947
	Fixed in 6.6.14 with commit cb16cc1abda1
	Fixed in 6.7.2 with commit bcdc288e7bc0
	Fixed in 6.8-rc1 with commit 6f64f866aa1a

Comment 4 Justin M. Forbes 2024-02-27 00:17:55 UTC

This was fixed for Fedora with the 6.6.14 stable kernel updates.

Comment 6 Alex 2024-06-09 15:29:14 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2023-52458 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags NULLPTR DISK SIMPLEFIX LOG IMPROVEONLY  ; these flags parsed automatically based on patche 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 15 errata-xmlrpc 2024-07-31 00:39:56 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:4928 https://access.redhat.com/errata/RHSA-2024:4928

Comment 16 errata-xmlrpc 2024-08-07 00:12:04 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:5067 https://access.redhat.com/errata/RHSA-2024:5067

Comment 17 errata-xmlrpc 2024-08-07 09:36:55 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:5066 https://access.redhat.com/errata/RHSA-2024:5066