Bug 2281679 (CVE-2024-35894)

Summary: CVE-2024-35894 kernel: mptcp: prevent BPF accessing lowat from a subflow socket.
Product: [Other] Security Response Reporter: ybuenos
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
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, 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 6.8.5, kernel 6.9 Doc Type: If docs needed, set a value
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Last Closed: Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2281680    
Bug Blocks: 2281751    

Description ybuenos 2024-05-20 11:37:44 UTC
In the Linux kernel, the following vulnerability has been resolved:

mptcp: prevent BPF accessing lowat from a subflow socket.

The Linux kernel CVE team has assigned CVE-2024-35894 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024051949-CVE-2024-35894-fd19@gregkh/T

Comment 2 ybuenos 2024-05-20 11:38:32 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2281680]

Comment 4 Alex 2024-06-09 17:42:26 UTC
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-35894 is: CHECK	Maybe valid. Check manually. with impact LOW (that is an approximation based on flags REMOTE WARNONLY BPF NETWORK  ; these flags parsed automatically based on patch data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.