Bug 2282504 (CVE-2021-47293)

Summary: CVE-2021-47293 kernel: net/sched: act_skbmod: Skip non-Ethernet packets
Product: [Other] Security Response Reporter: ybuenos
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: acaringi, allarkin, aquini, bhu, chwhite, cye, cyin, dbohanno, debarbos, dfreiber, drow, dvlasenk, esandeen, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, mleitner, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, scweaver, sidakwo, sukulkar, tglozar, trathi, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: kernel 4.19.199, kernel 5.4.136, kernel 5.10.54, kernel 5.13.6, kernel 5.14 Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the Linux kernel’s act_skbmod module, where the tcf_skbmod_act() function mistakenly assumes all packets use Ethernet as their protocol. This issue can lead to the corruption of non-Ethernet packets, such as those from CAN devices, if skbmod actions are incorrectly applied. This misinterpretation results in unexpected packet manipulation and data corruption.
 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:    
Bug Blocks: 2282972    

Description ybuenos 2024-05-22 13:23:59 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net/sched: act_skbmod: Skip non-Ethernet packets

The Linux kernel CVE team has assigned CVE-2021-47293 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024052123-CVE-2021-47293-0cbe@gregkh/T
Comment 7 errata-xmlrpc 2024-07-10 00:13:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2024:4447 https://access.redhat.com/errata/RHSA-2024:4447