Bug 2078456 (CVE-2022-29582)

Summary:	CVE-2022-29582 kernel: Race condition that allows container escape to system root
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, adscvr, airlied, alciregi, bdettelb, bhu, brdeoliv, bskeggs, chwhite, crwood, dhoward, dvlasenk, fhrbata, fpacheco, hdegoede, hkrzesin, hpa, jarod, jarodwilson, jburrell, jfaracco, jforbes, jglisse, jlelli, joe.lawrence, jonathan, josef, jshortt, jstancek, jwboyer, jwyatt, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, lzampier, masami256, mchehab, nmurray, ptalbert, qzhao, rvrbovsk, scweaver, steved, vkumar, walters, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 5.18 rc2	Doc Type:	If docs needed, set a value
Doc Text:	A use-after-free flaw was found in the Linux kernel’s io_uring interface subsystem in the way a user triggers a race condition between timeout flush and removal. This flaw allows a local user to crash or escalate their privileges on the system.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-04-25 20:46:00 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:	2078476
Bug Blocks:	2078145

Description Alex 2022-04-25 11:36:02 UTC

A flaw use-after-free found in Linux Kernel fs/io_uring.c that is result of race condition in io_uring timeouts.
This flaw may allow a local attacker to escalate privileges.

References:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e677edbcabee849bfdd43f1602bccbecf736a646
https://www.openwall.com/lists/oss-security/2022/04/22/3

Comment 2 Alex 2022-04-25 12:34:42 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2078476]

Comment 3 Product Security DevOps Team 2022-04-25 20:45:56 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-2022-29582

Comment 4 Justin M. Forbes 2022-04-28 12:37:39 UTC

This was fixed for Fedora with the 5.16.20 stable kernels (and in the 5.17.3 F36 kernel)