Bug 2347936 (CVE-2022-49521)

Summary:	CVE-2022-49521 kernel: scsi: lpfc: Fix resource leak in lpfc_sli4_send_seq_to_ulp()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dfreiber, drow, jburrell, vkumar
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 resource leak vulnerability exists in the Linux kernel's SCSI subsystem, specifically within the lpfc (LightPulse Fibre Channel) driver. This issue arises when the driver processes unsolicited frames that lack a corresponding handler for their rctl (Routing Control) value. In such cases, the frames are dropped without properly releasing the associated resources, leading to a memory leak.	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:

Description OSIDB Bzimport 2025-02-26 03:11:54 UTC

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

scsi: lpfc: Fix resource leak in lpfc_sli4_send_seq_to_ulp()

If no handler is found in lpfc_complete_unsol_iocb() to match the rctl of a
received frame, the frame is dropped and resources are leaked.

Fix by returning resources when discarding an unhandled frame type.  Update
lpfc_fc_frame_check() handling of NOP basic link service.

Comment 1 Avinash Hanwate 2025-02-26 20:51:43 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022611-CVE-2022-49521-64b2@gregkh/T