Bug 2282473 (CVE-2021-47309)

Summary: CVE-2021-47309 kernel: net: validate lwtstate->data before returning from skb_tunnel_info()
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, rkeshri, rparrazo, rrobaina, rvrbovsk, scweaver, sidakwo, sukulkar, tglozar, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: kernel 4.4.277, kernel 4.9.277, kernel 4.14.241, kernel 4.19.199, kernel 5.4.135, kernel 5.10.53, kernel 5.13.5, kernel 5.14 Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the Linux kernel's networking component, where the skb_tunnel_info() function can return unvalidated data. This issue arises because the function does not check the type of lwtstate->data before using it, which could lead to accessing incompatible data types and cause memory errors.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2282500    

Description ybuenos 2024-05-22 12:26:38 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net: validate lwtstate-&gt;data before returning from skb_tunnel_info()

The Linux kernel CVE team has assigned CVE-2021-47309 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024052128-CVE-2021-47309-2889@gregkh/T
Comment 3 Alex 2024-06-09 13:44:48 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47309 is: 	SKIP	No affected files built, so skip this CVE	NO			-	-	unknown	 (where first YES/NO value means if related sources built).