Bug 2395775 (CVE-2025-39834)

Summary: CVE-2025-39834 kernel: net/mlx5: HWS, Fix memory leak in hws_action_get_shared_stc_nic error flow
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-09-16 14:01:36 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net/mlx5: HWS, Fix memory leak in hws_action_get_shared_stc_nic error flow

When an invalid stc_type is provided, the function allocates memory for
shared_stc but jumps to unlock_and_out without freeing it, causing a
memory leak.

Fix by jumping to free_shared_stc label instead to ensure proper cleanup.
Comment 1 Keith Grant 2025-09-16 16:50:24 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091657-CVE-2025-39834-4d8f@gregkh/T