CVE-2025-38546

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-38546
In the Linux kernel, the following vulnerability has been resolved: atm: clip: Fix memory leak of struct clip_vcc. ioctl(ATMARP_MKIP) allocates struct clip_vcc and set it to vcc->user_back. The code assumes that vcc_destroy_socket() passes NULL skb to vcc->push() when the socket is close()d, and then clip_push() frees clip_vcc. However, ioctl(ATMARPD_CTRL) sets NULL to vcc->push() in atm_init_atmarp(), resulting in memory leak. Let's serialise two ioctl() by lock_sock() and check vcc->push() in atm_init_atmarp() to prevent memleak.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

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/0c17ff462d98c997d707ee5cf4e4a9b1b52b9d90 Patch
https://git.kernel.org/stable/c/1c075e88d5859a2c6b43b27e0e46fb281cef8039 Patch
https://git.kernel.org/stable/c/1fb9fb5a4b5cec2d56e26525ef8c519de858fa60 Patch
https://git.kernel.org/stable/c/2fb37ab3226606cbfc9b2b6f9e301b0b735734c5 Patch
https://git.kernel.org/stable/c/62dba28275a9a3104d4e33595c7b3328d4032d8d Patch
https://git.kernel.org/stable/c/9e4dbeee56f614e3f1e166e5d0655a999ea185ef Patch
https://git.kernel.org/stable/c/9f771816f14da6d6157a8c30069091abf6b566fb Patch
https://git.kernel.org/stable/c/cb2e4a2f8f268d8fba6662f663a2e57846f14a8d Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html Third Party Advisory Mailing List
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Third Party Advisory 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:2.6.12:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:*

Configuration 2 (hide)

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

07 Jan 2026, 18:33

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:*
CWE CWE-401
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux
Debian
Debian debian Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/0c17ff462d98c997d707ee5cf4e4a9b1b52b9d90 - () https://git.kernel.org/stable/c/0c17ff462d98c997d707ee5cf4e4a9b1b52b9d90 - Patch
References () https://git.kernel.org/stable/c/1c075e88d5859a2c6b43b27e0e46fb281cef8039 - () https://git.kernel.org/stable/c/1c075e88d5859a2c6b43b27e0e46fb281cef8039 - Patch
References () https://git.kernel.org/stable/c/1fb9fb5a4b5cec2d56e26525ef8c519de858fa60 - () https://git.kernel.org/stable/c/1fb9fb5a4b5cec2d56e26525ef8c519de858fa60 - Patch
References () https://git.kernel.org/stable/c/2fb37ab3226606cbfc9b2b6f9e301b0b735734c5 - () https://git.kernel.org/stable/c/2fb37ab3226606cbfc9b2b6f9e301b0b735734c5 - Patch
References () https://git.kernel.org/stable/c/62dba28275a9a3104d4e33595c7b3328d4032d8d - () https://git.kernel.org/stable/c/62dba28275a9a3104d4e33595c7b3328d4032d8d - Patch
References () https://git.kernel.org/stable/c/9e4dbeee56f614e3f1e166e5d0655a999ea185ef - () https://git.kernel.org/stable/c/9e4dbeee56f614e3f1e166e5d0655a999ea185ef - Patch
References () https://git.kernel.org/stable/c/9f771816f14da6d6157a8c30069091abf6b566fb - () https://git.kernel.org/stable/c/9f771816f14da6d6157a8c30069091abf6b566fb - Patch
References () https://git.kernel.org/stable/c/cb2e4a2f8f268d8fba6662f663a2e57846f14a8d - () https://git.kernel.org/stable/c/cb2e4a2f8f268d8fba6662f663a2e57846f14a8d - Patch
References () https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html - () https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html - Third Party Advisory, Mailing List
References () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html - () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html - Third Party Advisory, Mailing List

03 Nov 2025, 18:16

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html -
  • () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html -

18 Aug 2025, 20:16

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: atm: clip: Se corrige la fuga de memoria de la estructura clip_vcc. ioctl(ATMARP_MKIP) asigna la estructura clip_vcc y la establece en vcc->user_back. El código asume que vcc_destroy_socket() pasa un skb nulo a vcc->push() cuando se cierra el socket, y que clip_push() libera clip_vcc. Sin embargo, ioctl(ATMARPD_CTRL) establece vcc->push() en nulo en atm_init_atmarp(), lo que provoca una fuga de memoria. Serialicemos dos ioctl() mediante lock_sock() y comprobemos vcc->push() en atm_init_atmarp() para evitar fugas de memoria.

16 Aug 2025, 12:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-08-16 12:15

Updated : 2026-01-07 18:33

NVD link : CVE-2025-38546

Mitre link : CVE-2025-38546

CVE.ORG link : CVE-2025-38546

JSON object : View

Products Affected

debian

  • debian_linux

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime