# CVE-2025-37909

## Summary

- **CVE ID:** CVE-2025-37909
- **Severity:** MEDIUM
- **CVSS Score:** 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** N/A
- **Published:** May 20, 2025
- **Last Modified:** Sep 8, 2026

## 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

## Affected Products

- Linux — Linux (23f0703c125be490f70501b6b24ed5645775c56a)
- Linux — Linux (4.17)
- Linux — Linux (0)
- Linux — Linux (5.4.294)
- Linux — Linux (5.10.238)
- Linux — Linux (5.15.182)
- Linux — Linux (6.1.138)
- Linux — Linux (6.6.90)
- Linux — Linux (6.12.28)
- Linux — Linux (6.14.6)
- Linux — Linux (6.15)

## References

- [CNA](https://git.kernel.org/stable/c/093855ce90177488eac772de4eefbb909033ce5f)
- [CNA](https://git.kernel.org/stable/c/6c65ee5ad632eb8dcd3a91cf5dc99b22535f44d9)
- [CNA](https://git.kernel.org/stable/c/df993daa4c968b4b23078eacc248f6502ede8664)
- [CNA](https://git.kernel.org/stable/c/a0e0efbabbbe6a1859bc31bf65237ce91e124b9b)
- [CNA](https://git.kernel.org/stable/c/dae1ce27ceaea7e1522025b15252e3cc52802622)
- [CNA](https://git.kernel.org/stable/c/189b05f189cac9fd233ef04d31cb5078c4d09c39)
- [CNA](https://git.kernel.org/stable/c/f42c18e2f14c1b1fdd2a5250069a84bc854c398c)
- [CNA](https://git.kernel.org/stable/c/2d52e2e38b85c8b7bc00dca55c2499f46f8c8198)
- [CVE](https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html)
- [CVE](https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html)
- [siemens-SADP](https://cert-portal.siemens.com/productcert/html/ssa-019113.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.21%
- **EPSS Percentile:** 11.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._