Bug 1226457 (CVE-2024-36973)

Summary:	VUL-0: CVE-2024-36973: kernel: misc: microchip: pci1xxxx: fix double free in the error handling of gp_aux_bus_probe()
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	IN_PROGRESS ---	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	abergmann, gabriel.bertazi
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/411127/
Whiteboard:	CVSSv3.1:SUSE:CVE-2024-36973:6.2:(AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description SMASH SMASH 2024-06-18 06:45:53 UTC

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

misc: microchip: pci1xxxx: fix double free in the error handling of gp_aux_bus_probe()

When auxiliary_device_add() returns error and then calls
auxiliary_device_uninit(), callback function
gp_auxiliary_device_release() calls ida_free() and
kfree(aux_device_wrapper) to free memory. We should't
call them again in the error handling path.

Fix this by skipping the redundant cleanup functions.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-36973
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-36973.mbox
https://git.kernel.org/stable/c/086c6cbcc563c81d55257f9b27e14faf1d0963d3
https://www.cve.org/CVERecord?id=CVE-2024-36973