Bug 2117258

Summary:	kernel: use-after-free caused by rose_t0timer_expiry in net/rose/rose_route.c
Product:	[Other] Security Response	Reporter:	Alex <allarkin>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED DUPLICATE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, adscvr, airlied, alciregi, bdettelb, bhu, brdeoliv, bskeggs, chwhite, crwood, ddepaula, debarbos, dhoward, dvlasenk, fhrbata, hdegoede, hkrzesin, hpa, jarod, jarodwilson, jburrell, jfaracco, jferlan, 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, tyberry, vkumar, walters, williams
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 flaw use after free in the Linux kernel Amateur Radio X.25 PLP (Rose) functionality was found. A local user could use this flaw to crash the system or potentially escalate their privileges on the system.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-08-15 13:03:24 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:	2117259
Bug Blocks:	2105771

Description Alex 2022-08-10 12:41:40 UTC

A flaw in Linux Kernel found.
A use-after-free vulnerabilities caused by rose_t0timer_expiry in net/rose/rose_route.c of linux can lead to Linux Kernel crash or potentially privileges escalation.
Attackers can use an active rose network interface, then, call close(), bind(), connect() and write() syscalls to crash Linux kernel.

Reference:
https://github.com/torvalds/linux/commit/148ca04518070910739dfc4eeda765057856403d

Comment 1 Alex 2022-08-10 12:42:03 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2117259]

Comment 2 Justin M. Forbes 2022-08-11 13:40:20 UTC

This was fixed for Fedora with the 5.18.11 stable kernel updates.

Comment 3 Alex 2022-09-08 07:47:44 UTC


*** This bug has been marked as a duplicate of bug 2104114 ***