Bug 2169719 (CVE-2023-1249)

Summary:	CVE-2023-1249 kernel: missing mmap_lock in file_files_note that could possibly lead to a use after free in the coredump code
Product:	[Other] Security Response	Reporter:	Alex <allarkin>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	acaringi, allarkin, bhu, chwhite, crwood, ddepaula, debarbos, dvlasenk, ezulian, fhrbata, hkrzesin, jarod, jfaracco, jferlan, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, kernel-mgr, lgoncalv, lzampier, nmurray, ptalbert, qzhao, rvrbovsk, scweaver, tyberry, walters, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	Linux kernel 5.18-rc1	Doc Type:	If docs needed, set a value
Doc Text:	A use-after-free flaw was found in the Linux kernel’s core dump subsystem. This flaw allows a local user to crash the system. Only if patch 390031c94211 ("coredump: Use the vma snapshot in fill_files_note") not applied yet, then kernel could be affected.	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:	2169741, 2179160
Bug Blocks:	2156315

Description Alex 2023-02-14 13:37:24 UTC

A flaw in the Linux Kernel found. When performing core dump, the use after free could happen in file_files_note function.

Reference:
https://patchwork.kernel.org/project/linux-fsdevel/patch/87iltzn3nd.fsf_-_@email.froward.int.ebiederm.org/

Comment 8 errata-xmlrpc 2023-11-07 08:20:04 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:6583 https://access.redhat.com/errata/RHSA-2023:6583