Bug 1225839 (CVE-2024-36959)

Summary:	VUL-0: CVE-2024-36959: kernel: pinctrl: devicetree: fix refcount leak in pinctrl_dt_to_map()
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	NEW ---	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	rfrohl, vasant.karasulli
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/408234/
Whiteboard:	CVSSv3.1:SUSE:CVE-2024-36959:4.7:(AV:L/AC:H/PR:L/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 2024-06-03 12:47:09 UTC

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

pinctrl: devicetree: fix refcount leak in pinctrl_dt_to_map()

If we fail to allocate propname buffer, we need to drop the reference
count we just took. Because the pinctrl_dt_free_maps() includes the
droping operation, here we call it directly.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-36959
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-36959.mbox
https://git.kernel.org/stable/c/06780473cb8a858d1d6cab2673e021b072a852d1
https://git.kernel.org/stable/c/47d253c485491caaf70d8cd8c0248ae26e42581f
https://git.kernel.org/stable/c/35ab679e8bb5a81a4f922d3efbd43e32bce69274
https://git.kernel.org/stable/c/76aa2440deb9a35507590f2c981a69a57ecd305d
https://git.kernel.org/stable/c/518d5ddafeb084d6d9b1773ed85164300037d0e6
https://git.kernel.org/stable/c/026e24cf31733dbd97f41cc9bc5273ace428eeec
https://git.kernel.org/stable/c/c7e02ccc9fdc496fe51e440e3e66ac36509ca049
https://git.kernel.org/stable/c/a0cedbcc8852d6c77b00634b81e41f17f29d9404
https://www.cve.org/CVERecord?id=CVE-2024-36959

Comment 2 Takashi Iwai 2024-06-13 13:54:20 UTC

The fix backport already present on SLE15-SP5 branch.