Bug 2337134 (CVE-2024-47408)

Summary: CVE-2024-47408 kernel: net/smc: check smcd_v2_ext_offset when receiving proposal msg
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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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-01-11 13:03:51 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net/smc: check smcd_v2_ext_offset when receiving proposal msg

When receiving proposal msg in server, the field smcd_v2_ext_offset in
proposal msg is from the remote client and can not be fully trusted.
Once the value of smcd_v2_ext_offset exceed the max value, there has
the chance to access wrong address, and crash may happen.

This patch checks the value of smcd_v2_ext_offset before using it.
Comment 1 Avinash Hanwate 2025-01-13 06:01:22 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025011141-CVE-2024-47408-e686@gregkh/T