Vulnerability Description
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
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.17, < 5.4.294 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/093855ce90177488eac772de4eefbb909033ce5fPatch
- https://git.kernel.org/stable/c/189b05f189cac9fd233ef04d31cb5078c4d09c39Patch
- https://git.kernel.org/stable/c/2d52e2e38b85c8b7bc00dca55c2499f46f8c8198Patch
- https://git.kernel.org/stable/c/6c65ee5ad632eb8dcd3a91cf5dc99b22535f44d9Patch
- https://git.kernel.org/stable/c/a0e0efbabbbe6a1859bc31bf65237ce91e124b9bPatch
- https://git.kernel.org/stable/c/dae1ce27ceaea7e1522025b15252e3cc52802622Patch
- https://git.kernel.org/stable/c/df993daa4c968b4b23078eacc248f6502ede8664Patch
- https://git.kernel.org/stable/c/f42c18e2f14c1b1fdd2a5250069a84bc854c398cPatch
- https://lists.debian.org/debian-lts-announce/2025/08/msg00010.htmlMailing List
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlMailing List
FAQ
What is CVE-2025-37909?
CVE-2025-37909 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 descr...
How severe is CVE-2025-37909?
CVE-2025-37909 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-37909?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.