Bug 2363347 (CVE-2025-37788)

Summary: CVE-2025-37788 kernel: cxgb4: fix memory leak in cxgb4_init_ethtool_filters() error path
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: low    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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OS: Linux   
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Description OSIDB Bzimport 2025-05-01 14:04:44 UTC 
In the Linux kernel, the following vulnerability has been resolved:

cxgb4: fix memory leak in cxgb4_init_ethtool_filters() error path

In the for loop used to allocate the loc_array and bmap for each port, a
memory leak is possible when the allocation for loc_array succeeds,
but the allocation for bmap fails. This is because when the control flow
goes to the label free_eth_finfo, only the allocations starting from
(i-1)th iteration are freed.

Fix that by freeing the loc_array in the bmap allocation error path.
Comment 1 Avinash Hanwate 2025-05-02 05:57:56 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050119-CVE-2025-37788-fd43@gregkh/T