Bug 2367535 (CVE-2025-37909) - CVE-2025-37909 kernel: net: lan743x: Fix memleak issue when GSO enabled
Summary: CVE-2025-37909 kernel: net: lan743x: Fix memleak issue when GSO enabled
Keywords:
Status: NEW
Alias: CVE-2025-37909
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-05-20 16:02 UTC by OSIDB Bzimport
Modified: 2025-05-20 22:08 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2025-05-20 16:02:50 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net: lan743x: Fix memleak issue when GSO enabled

Always map the `skb` to the LS descriptor. Previously skb was
mapped to EXT descriptor when the number of fragments is zero with
GSO enabled. Mapping the skb to EXT descriptor prevents it from
being freed, leading to a memory leak
Comment 1 Jon Moroney 2025-05-20 22:01:14 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025052058-CVE-2025-37909-f6da@gregkh/T
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