Bug 2267914 (CVE-2021-47103)

Summary: CVE-2021-47103 kernel: inet: fully convert sk->sk_rx_dst to RCU rules
Product: [Other] Security Response Reporter: Zack Miele <zmiele>
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, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, mleitner, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, rysulliv, scweaver, sidakwo, sukulkar, tglozar, tyberry, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: kernel 4.9.331, kernel 4.14.296, kernel 4.19.262, kernel 5.4.220, kernel 5.10.150, kernel 5.15.12, kernel 5.16 Doc Type: If docs needed, set a value
Doc Text:
A use-after-free vulnerability was found in the TCP IP protocol in the Linux Kernel, where a delete operation of the RCU-protected pointer is supposed to clear the pointer before the call_rcu()/synchronize_rcu() guarding the actual memory freeing. This flaw allows a local attacker to crash the system or leak kernel internal information.
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2268181    

Description Zack Miele 2024-03-05 14:36:52 UTC
In the Linux kernel, the following vulnerability has been resolved:

inet: fully convert sk-&gt;sk_rx_dst to RCU rules

The Linux kernel CVE team has assigned CVE-2021-47103 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024030416-CVE-2021-47103-4314@gregkh/T