CVE-2025-37909

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 v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/093855ce90177488eac772de4eefbb909033ce5f	Patch
https://git.kernel.org/stable/c/189b05f189cac9fd233ef04d31cb5078c4d09c39	Patch
https://git.kernel.org/stable/c/2d52e2e38b85c8b7bc00dca55c2499f46f8c8198	Patch
https://git.kernel.org/stable/c/6c65ee5ad632eb8dcd3a91cf5dc99b22535f44d9	Patch
https://git.kernel.org/stable/c/a0e0efbabbbe6a1859bc31bf65237ce91e124b9b	Patch
https://git.kernel.org/stable/c/dae1ce27ceaea7e1522025b15252e3cc52802622	Patch
https://git.kernel.org/stable/c/df993daa4c968b4b23078eacc248f6502ede8664	Patch
https://git.kernel.org/stable/c/f42c18e2f14c1b1fdd2a5250069a84bc854c398c	Patch
https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html	Mailing List
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html	Mailing List

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.15:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.15:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.15:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.15:rc4::::::

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-05-20 16:15

Updated : 2025-11-17 14:51

NVD link : CVE-2025-37909

Mitre link : CVE-2025-37909

CVE.ORG link : CVE-2025-37909

JSON object : View

Products Affected

debian

debian_linux

linux

linux_kernel

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

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Previously skb was\nmapped to EXT descriptor when the number of fragments is zero with\nGSO enabled. Mapping the skb to EXT descriptor prevents it from\nbeing freed, leading to a memory leak"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: lan743x: Se solucion\u00f3 el problema de fuga de memoria con GSO habilitado. Siempre se asigna `skb` al descriptor LS. Anteriormente, skb se asignaba al descriptor EXT cuando el n\u00famero de fragmentos era cero con GSO habilitado. 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