Bug 2153060 (CVE-2022-3107)

Summary:	CVE-2022-3107 kernel: hv_netvsc: NULL pointer dereference in netvsc_get_ethtool_stats()
Product:	[Other] Security Response	Reporter:	Sage McTaggart <amctagga>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	acaringi, allarkin, bhu, chwhite, crwood, dbohanno, ddepaula, debarbos, dfreiber, dvlasenk, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jferlan, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, kernel-mgr, ldoskova, lgoncalv, lleshchi, lzampier, mcascell, nmurray, ptalbert, qzhao, rogbas, rrobaina, rvrbovsk, rysulliv, scweaver, tyberry, vkumar, walters, wcosta, williams, wmealing, ycote
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 5.17	Doc Type:	If docs needed, set a value
Doc Text:		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:	2061574, 2067251, 2086611, 2086626, 2214243, 2214244, 2214245, 2214246
Bug Blocks:	2153051

Description Sage McTaggart 2022-12-13 22:02:05 UTC

[Suggested description]
An issue was discovered in the Linux kernel through 5.16-rc6.
netvsc_get_ethtool_stats in drivers/net/hyperv/netvsc_drv.c lacks check
of the return value of kvmalloc_array() and will cause the null pointer
dereference.

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[VulnerabilityType Other]
NULL Pointer Dereference

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[Vendor of Product]
the development group

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[Affected Product Code Base]
Linux kernel - 5.16-rc6

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[Reference]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.19-rc2&id=886e44c9298a6b428ae046e2fa092ca52e822e6a

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[Discoverer]
Jiasheng Jiang

Comment 4 Mauro Matteo Cascella 2023-06-12 08:58:27 UTC

Upstream commit:
https://github.com/torvalds/linux/commit/886e44c9298a6b428ae046e2fa092ca52e822e6a

Comment 6 Mauro Matteo Cascella 2023-06-12 09:13:09 UTC

This issue was fixed upstream in version 5.17. The kernel packages as shipped in the following Red Hat products were previously updated to a version that contains the fix via the following errata:

kernel in Red Hat Enterprise Linux 8
https://access.redhat.com/errata/RHSA-2022:7683

kernel-rt in Red Hat Enterprise Linux 8
https://access.redhat.com/errata/RHSA-2022:7444

kernel in Red Hat Enterprise Linux 9
https://access.redhat.com/errata/RHSA-2022:8267

kernel-rt in Red Hat Enterprise Linux 9
https://access.redhat.com/errata/RHSA-2022:7933