Bug 1992798 (CVE-2021-38207)

Summary:	CVE-2021-38207 kernel: buffer overflow in drivers/net/ethernet/xilinx/ll_temac_main.c by sending heavy network traffic for about ten minutes
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, adscvr, airlied, alciregi, bdettelb, bhu, blc, brdeoliv, bskeggs, chwhite, crwood, dhoward, dvlasenk, fhrbata, fpacheco, hdegoede, hkrzesin, jarod, jarodwilson, jeremy, jforbes, jglisse, jlelli, jonathan, josef, jshortt, jstancek, jwboyer, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, masami256, mchehab, mlangsdo, nmurray, ptalbert, qzhao, rvrbovsk, steved, tomckay, walters, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 5.13	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the Linux kernel. A buffer overflow and lockup, leading to a denial of service, can occur when a remote attacker sends heavy network traffic for approximately ten minutes. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-08-12 13:28:11 UTC	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:	1992799
Bug Blocks:	1992800

Description Guilherme de Almeida Suckevicz 2021-08-11 18:29:59 UTC

drivers/net/ethernet/xilinx/ll_temac_main.c in the Linux kerne allows local attackers to cause a denial of service (buffer overflow and lockup) by sending heavy network traffic for about ten minutes.

Reference and upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c364df2489b8ef2f5e3159b1dff1ff1fdb16040d

Comment 1 Guilherme de Almeida Suckevicz 2021-08-11 18:30:43 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1992799]

Comment 3 Product Security DevOps Team 2021-08-12 13:28:11 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-38207

Comment 4 Justin M. Forbes 2021-08-12 13:32:08 UTC

This was fixed for Fedora with the 5.12.13 stable kernel updates.