Bug 2337099 (CVE-2024-49571)

Summary: CVE-2024-49571 kernel: net/smc: check iparea_offset and ipv6_prefixes_cnt when receiving proposal msg
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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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 13:01:36 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net/smc: check iparea_offset and ipv6_prefixes_cnt when receiving proposal msg

When receiving proposal msg in server, the field iparea_offset
and the field ipv6_prefixes_cnt in proposal msg are from the
remote client and can not be fully trusted. Especially the
field iparea_offset, once exceed the max value, there has the
chance to access wrong address, and crash may happen.

This patch checks iparea_offset and ipv6_prefixes_cnt before using them.
Comment 1 Avinash Hanwate 2025-01-13 08:24:25 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025011142-CVE-2024-49571-c86d@gregkh/T
Comment 2 Avinash Hanwate 2025-01-13 11:23:23 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025011142-CVE-2024-49571-c86d@gregkh/T