CVE-2025-22063

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  2. Vulnerabilities (CVE)
  3. CVE-2025-22063

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

I

n the Linux kernel, the following vulnerability has been resolved: netlabel: Fix NULL pointer exception caused by CALIPSO on IPv4 sockets When calling netlbl_conn_setattr(), addr->sa_family is used to determine the function behavior. If sk is an IPv4 socket, but the connect function is called with an IPv6 address, the function calipso_sock_setattr() is triggered. Inside this function, the following code is executed: sk_fullsock(__sk) ? inet_sk(__sk)->pinet6 : NULL; Since sk is an IPv4 socket, pinet6 is NULL, leading to a null pointer dereference. This patch fixes the issue by checking if inet6_sk(sk) returns a NULL pointer before accessing pinet6.

References
Link Resource
https://git.kernel.org/stable/c/078aabd567de3d63d37d7673f714e309d369e6e2 Patch
https://git.kernel.org/stable/c/172a8a996a337206970467e871dd995ac07640b1 Patch
https://git.kernel.org/stable/c/1927d0bcd5b81e80971bf6b8eba267508bd1c78b Patch
https://git.kernel.org/stable/c/1ad9166cab6a0f5c0b10344a97bdf749ae11dcbf Patch
https://git.kernel.org/stable/c/1e38f7a6cdd68377f8a4189b2fbaec14a6dd5152 Patch
https://git.kernel.org/stable/c/3ba9cf69de50e8abed32b448616c313baa4c5712 Patch
https://git.kernel.org/stable/c/797e5371cf55463b4530bab3fef5f27f7c6657a8 Patch
https://git.kernel.org/stable/c/9fe3839588db7519030377b7dee3f165e654f6c5 Patch
https://git.kernel.org/stable/c/a7e89541d05b98c79a51c0f95df020f8e82b62ed Patch
https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
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:*:*:*:*:*:*:*:*
History

03 Nov 2025, 20:17

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html -
  • () https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html -

29 Apr 2025, 18:51

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/078aabd567de3d63d37d7673f714e309d369e6e2 - () https://git.kernel.org/stable/c/078aabd567de3d63d37d7673f714e309d369e6e2 - Patch
References () https://git.kernel.org/stable/c/172a8a996a337206970467e871dd995ac07640b1 - () https://git.kernel.org/stable/c/172a8a996a337206970467e871dd995ac07640b1 - Patch
References () https://git.kernel.org/stable/c/1927d0bcd5b81e80971bf6b8eba267508bd1c78b - () https://git.kernel.org/stable/c/1927d0bcd5b81e80971bf6b8eba267508bd1c78b - Patch
References () https://git.kernel.org/stable/c/1ad9166cab6a0f5c0b10344a97bdf749ae11dcbf - () https://git.kernel.org/stable/c/1ad9166cab6a0f5c0b10344a97bdf749ae11dcbf - Patch
References () https://git.kernel.org/stable/c/1e38f7a6cdd68377f8a4189b2fbaec14a6dd5152 - () https://git.kernel.org/stable/c/1e38f7a6cdd68377f8a4189b2fbaec14a6dd5152 - Patch
References () https://git.kernel.org/stable/c/3ba9cf69de50e8abed32b448616c313baa4c5712 - () https://git.kernel.org/stable/c/3ba9cf69de50e8abed32b448616c313baa4c5712 - Patch
References () https://git.kernel.org/stable/c/797e5371cf55463b4530bab3fef5f27f7c6657a8 - () https://git.kernel.org/stable/c/797e5371cf55463b4530bab3fef5f27f7c6657a8 - Patch
References () https://git.kernel.org/stable/c/9fe3839588db7519030377b7dee3f165e654f6c5 - () https://git.kernel.org/stable/c/9fe3839588db7519030377b7dee3f165e654f6c5 - Patch
References () https://git.kernel.org/stable/c/a7e89541d05b98c79a51c0f95df020f8e82b62ed - () https://git.kernel.org/stable/c/a7e89541d05b98c79a51c0f95df020f8e82b62ed - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-476
First Time Linux linux Kernel
Linux
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netlabel: Se corrige la excepción de puntero nulo causada por CALIPSO en sockets IPv4. Al llamar a netlbl_conn_setattr(), se utiliza addr->sa_family para determinar el comportamiento de la función. Si sk es un socket IPv4, pero se llama a la función connect con una dirección IPv6, se activa la función calipso_sock_setattr(). Dentro de esta función, se ejecuta el siguiente código: sk_fullsock(__sk) ? inet_sk(__sk)->pinet6 : NULL; Dado que sk es un socket IPv4, pinet6 es NULL, lo que provoca una desreferencia de puntero nulo. Este parche corrige el problema comprobando si inet6_sk(sk) devuelve un puntero nulo antes de acceder a pinet6.
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

16 Apr 2025, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-04-16 15:15

Updated : 2025-11-03 20:17

NVD link : CVE-2025-22063

Mitre link : CVE-2025-22063

CVE.ORG link : CVE-2025-22063

JSON object : View

Products Affected

linux

CWE
CWE-476

NULL Pointer Dereference