Bug 2347687 (CVE-2022-49084)

Summary: CVE-2022-49084 kernel: qede: confirm skb is allocated before using
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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OS: Linux   
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Description OSIDB Bzimport 2025-02-26 03:03:16 UTC 
In the Linux kernel, the following vulnerability has been resolved:

qede: confirm skb is allocated before using

qede_build_skb() assumes build_skb() always works and goes straight
to skb_reserve(). However, build_skb() can fail under memory pressure.
This results in a kernel panic because the skb to reserve is NULL.

Add a check in case build_skb() failed to allocate and return NULL.

The NULL return is handled correctly in callers to qede_build_skb().
Comment 1 Mauro Matteo Cascella 2025-02-26 09:18:25 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022657-CVE-2022-49084-b132@gregkh/T