Bug 2150953 (CVE-2022-3565)

Summary:	CVE-2022-3565 kernel: use-after-free in l1oip timer handlers
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, crwood, ddepaula, debarbos, dfreiber, dvlasenk, ezulian, hkrzesin, jarod, jburrell, jfaracco, jferlan, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, kernel-mgr, lgoncalv, lleshchi, lzampier, nmurray, ptalbert, qzhao, rogbas, rvrbovsk, scweaver, tyberry, vkumar, walters, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.1-rc1	Doc Type:	If docs needed, set a value
Doc Text:	A use-after-free flaw was found in the Linux kernel’s ISDN over IP tunnel functionality in how a local user triggers the release_card() function called from l1oip_cleanup(). This flaw allows a local user to crash or potentially escalate their privileges on the system.	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:	2150954, 2162419, 2162420, 2162421, 2162422
Bug Blocks:	2150724

Description Guilherme de Almeida Suckevicz 2022-12-05 17:30:35 UTC

A vulnerability has been found in Linux Kernel. Affected by this issue is the function del_timer of the file drivers/isdn/mISDN/l1oip_core.c of the ISDN (for the ISDN over IP tunnel). The manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-211088.

Reference:
https://vuldb.com/?id.211088

Upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=2568a7e0832ee30b0a351016d03062ab4e0e0a3f

Comment 1 Guilherme de Almeida Suckevicz 2022-12-05 17:30:59 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2150954]

Comment 2 Justin M. Forbes 2022-12-08 15:39:44 UTC

While ISDN is disabled in Fedora kernels, a patch for this was included in 6.0.3 for users who might be building their own kernels.

Comment 10 errata-xmlrpc 2023-11-07 08:19:58 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