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: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: acaringi, adscvr, airlied, alciregi, bdettelb, bhu, blc, brdeoliv, bskeggs, chwhite, 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, swood, 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:
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.