Bug 2281687 (CVE-2024-35891)

Summary:	CVE-2024-35891 kernel: net: phy: micrel: Fix potential null pointer dereference
Product:	[Other] Security Response	Reporter:	ybuenos
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, allarkin, aquini, bhu, chwhite, dbohanno, debarbos, dfreiber, drow, dvlasenk, esandeen, ezulian, hkrzesin, jarod, jburrell, jfaracco, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, ldoskova, lgoncalv, mleitner, mmilgram, mstowell, nmurray, ptalbert, rhel-process-autobot, rparrazo, rrobaina, rvrbovsk, scweaver, sidakwo, sukulkar, tglozar, vkumar, watson-tool-maintainers, wcosta, williams, wmealing, ycote, ykopkova
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.1.85, kernel 6.6.26, kernel 6.8.5, kernel 6.9	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the Linux kernel's net: phy: micrel component. Specifically, within the lan8814_get_sig_rx() and lan8814_get_sig_tx() functions, a null pointer dereference can occur if ptp_parse_header() returns a NULL ptp_header due to an abnormal or corrupted packet. A remote attacker could exploit this by sending specially crafted network packets, leading to a system crash and a denial of service.	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:	2281688
Bug Blocks:	2281751

Description ybuenos 2024-05-20 11:46:24 UTC

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

net: phy: micrel: Fix potential null pointer dereference

The Linux kernel CVE team has assigned CVE-2024-35891 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024051948-CVE-2024-35891-3a56@gregkh/T

Comment 1 ybuenos 2024-05-20 11:47:03 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2281688]

Comment 3 Alex 2024-06-09 15:42:50 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-35891 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags NULLPTR SKB  ; these flags parsed automatically based on patche data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.

Comment 9 errata-xmlrpc 2025-05-13 08:27:11 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:6966 https://access.redhat.com/errata/RHSA-2025:6966