Bug 2182662 (CVE-2023-23003)

Summary:	CVE-2023-23003 kernel: missing check for return value of hashmap__new() in the function expr__ctx_new
Product:	[Other] Security Response	Reporter:	Alex <allarkin>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, allarkin, bhu, chwhite, crwood, dbohanno, ddepaula, debarbos, dfreiber, dvlasenk, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jferlan, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, kernel-mgr, ldoskova, lgoncalv, lleshchi, lzampier, nmurray, ptalbert, qzhao, rogbas, rrobaina, rvrbovsk, rysulliv, scweaver, tyberry, vkumar, walters, wcosta, williams, wmealing, ycote
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A NULL pointer dereference flaw was found in the Linux kernel’s Linux performance measurement and analysis tool. This flaw allows a local user to crash the system.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-03-29 13:16:13 UTC	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:	2182663
Bug Blocks:	2174642

Description Alex 2023-03-29 09:36:24 UTC

A flaw found in the Linux Kernel. In the Linux performance measurement and analysis tool (tools/perf/util/expr.c), there is missing check for return value of hashmap__new() in the function expr__ctx_new.
The hashmap__new() function may return ERR_PTR(-ENOMEM) when malloc() fails, add IS_ERR() checking for ctx->ids.

Reference:
https://github.com/torvalds/linux/commit/0a515a06c5ebfa46fee3ac519e418f801e718da4

Comment 1 Alex 2023-03-29 09:36:51 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2182663]

Comment 3 Product Security DevOps Team 2023-03-29 13:16:08 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2023-23003

Comment 4 Justin M. Forbes 2023-04-06 16:03:42 UTC

This was fixed for Fedora with the 5.16 stable kernel rebases.