Bug 2363470 (CVE-2022-49858)

Summary: CVE-2022-49858 kernel: octeontx2-pf: Fix SQE threshold checking
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-05-01 15:05:56 UTC 
In the Linux kernel, the following vulnerability has been resolved:

octeontx2-pf: Fix SQE threshold checking

Current way of checking available SQE count which is based on
HW updated SQB count could result in driver submitting an SQE
even before CQE for the previously transmitted SQE at the same
index is processed in NAPI resulting losing SKB pointers,
hence a leak. Fix this by checking a consumer index which
is updated once CQE is processed.
Comment 1 Avinash Hanwate 2025-05-02 06:20:45 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050146-CVE-2022-49858-a1ee@gregkh/T