Bug 1228000 (CVE-2022-48789)

Summary:	VUL-0: CVE-2022-48789: kernel: nvme-tcp: fix possible use-after-free in transport error_recovery work
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Kernel Bugs <kernel-bugs>
Status:	NEW ---	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	andrea.mattiazzo
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/414227/
Whiteboard:	CVSSv3.1:SUSE:CVE-2022-48789:6.4:(AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description SMASH SMASH 2024-07-17 07:52:08 UTC

In the Linux kernel, the following vulnerability has been resolved:

nvme-tcp: fix possible use-after-free in transport error_recovery work

While nvme_tcp_submit_async_event_work is checking the ctrl and queue
state before preparing the AER command and scheduling io_work, in order
to fully prevent a race where this check is not reliable the error
recovery work must flush async_event_work before continuing to destroy
the admin queue after setting the ctrl state to RESETTING such that
there is no race .submit_async_event and the error recovery handler
itself changing the ctrl state.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-48789
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2022/CVE-2022-48789.mbox
https://git.kernel.org/stable/c/61a26ffd5ad3ece456d74c4c79f7b5e3f440a141
https://git.kernel.org/stable/c/e192184cf8bce8dd55d619f5611a2eaba996fa05
https://git.kernel.org/stable/c/5e42fca37ccc76f39f73732661bd47254cad5982
https://git.kernel.org/stable/c/bb0d8fb35c4ff00a503c2c4dca4cce8d102a21c4
https://git.kernel.org/stable/c/ff9fc7ebf5c06de1ef72a69f9b1ab40af8b07f9e
https://www.cve.org/CVERecord?id=CVE-2022-48789
https://bugzilla.redhat.com/show_bug.cgi?id=2298125