Bug 2193219 (CVE-2023-0458)

Summary:	CVE-2023-0458 kernel: speculative pointer dereference in do_prlimit() in kernel/sys.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, allarkin, bhu, chwhite, dbohanno, ddepaula, debarbos, dfreiber, dvlasenk, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jferlan, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, kernel-mgr, kyoshida, ldoskova, lgoncalv, lleshchi, lzampier, nmurray, ptalbert, qzhao, rogbas, rrobaina, rvrbovsk, rysulliv, scweaver, swood, tyberry, vkumar, walters, wcosta, williams, wmealing, ycote, zmiele
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.2	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:	2196314, 2196315, 2196316, 2196317, 2214850, 2215055, 2215015, 2215107
Bug Blocks:	2190088

Description Guilherme de Almeida Suckevicz 2023-05-04 18:12:54 UTC

A speculative pointer dereference problem exists in the Linux Kernel on the do_prlimit() function. The resource argument value is controlled and is used in pointer arithmetic for the 'rlim' variable and can be used to leak the contents. We recommend upgrading past version 6.1.8 or commit 739790605705ddcf18f21782b9c99ad7d53a8c11.

Reference and upstream patch:
https://github.com/torvalds/linux/commit/739790605705ddcf18f21782b9c99ad7d53a8c11

Comment 10 errata-xmlrpc 2023-08-01 08:59:22 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:4378 https://access.redhat.com/errata/RHSA-2023:4378

Comment 11 errata-xmlrpc 2023-08-01 09:17:30 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:4377 https://access.redhat.com/errata/RHSA-2023:4377