CVE-2024-40931

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-40931
In the Linux kernel, the following vulnerability has been resolved: mptcp: ensure snd_una is properly initialized on connect This is strictly related to commit fb7a0d334894 ("mptcp: ensure snd_nxt is properly initialized on connect"). It turns out that syzkaller can trigger the retransmit after fallback and before processing any other incoming packet - so that snd_una is still left uninitialized. Address the issue explicitly initializing snd_una together with snd_nxt and write_seq.

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/208cd22ef5e57f82d38ec11c1a1703f9401d6dde Patch
https://git.kernel.org/stable/c/7b9c7fc8600b64a86e4b47b2d190bba380267726 Patch
https://git.kernel.org/stable/c/8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3 Patch
https://git.kernel.org/stable/c/ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce Patch
https://git.kernel.org/stable/c/f03c46eabb3a67bd2993e237ab5517f00a5f1813 Patch
https://git.kernel.org/stable/c/f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f Patch
https://git.kernel.org/stable/c/208cd22ef5e57f82d38ec11c1a1703f9401d6dde Patch
https://git.kernel.org/stable/c/7b9c7fc8600b64a86e4b47b2d190bba380267726 Patch
https://git.kernel.org/stable/c/8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3 Patch
https://git.kernel.org/stable/c/ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce Patch
https://git.kernel.org/stable/c/f03c46eabb3a67bd2993e237ab5517f00a5f1813 Patch
https://git.kernel.org/stable/c/f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f Patch
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:6.10:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:*
History

06 Mar 2025, 12:53

Type Values Removed Values Added
CWE CWE-908
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux linux Kernel
Linux
References () https://git.kernel.org/stable/c/208cd22ef5e57f82d38ec11c1a1703f9401d6dde - () https://git.kernel.org/stable/c/208cd22ef5e57f82d38ec11c1a1703f9401d6dde - Patch
References () https://git.kernel.org/stable/c/7b9c7fc8600b64a86e4b47b2d190bba380267726 - () https://git.kernel.org/stable/c/7b9c7fc8600b64a86e4b47b2d190bba380267726 - Patch
References () https://git.kernel.org/stable/c/8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3 - () https://git.kernel.org/stable/c/8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3 - Patch
References () https://git.kernel.org/stable/c/ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce - () https://git.kernel.org/stable/c/ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce - Patch
References () https://git.kernel.org/stable/c/f03c46eabb3a67bd2993e237ab5517f00a5f1813 - () https://git.kernel.org/stable/c/f03c46eabb3a67bd2993e237ab5517f00a5f1813 - Patch
References () https://git.kernel.org/stable/c/f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f - () https://git.kernel.org/stable/c/f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f - Patch

21 Nov 2024, 09:31

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mptcp: asegúrese de que snd_una se inicialice correctamente al conectarse. Esto está estrictamente relacionado con el commit fb7a0d334894 ("mptcp: asegúrese de que snd_nxt se inicialice correctamente al conectarse"). Resulta que syzkaller puede activar la retransmisión después del respaldo y antes de procesar cualquier otro paquete entrante, de modo que snd_una aún permanece sin inicializar. Solucione el problema al inicializar explícitamente snd_una junto con snd_nxt y write_seq.
References () https://git.kernel.org/stable/c/208cd22ef5e57f82d38ec11c1a1703f9401d6dde - () https://git.kernel.org/stable/c/208cd22ef5e57f82d38ec11c1a1703f9401d6dde -
References () https://git.kernel.org/stable/c/7b9c7fc8600b64a86e4b47b2d190bba380267726 - () https://git.kernel.org/stable/c/7b9c7fc8600b64a86e4b47b2d190bba380267726 -
References () https://git.kernel.org/stable/c/8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3 - () https://git.kernel.org/stable/c/8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3 -
References () https://git.kernel.org/stable/c/ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce - () https://git.kernel.org/stable/c/ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce -
References () https://git.kernel.org/stable/c/f03c46eabb3a67bd2993e237ab5517f00a5f1813 - () https://git.kernel.org/stable/c/f03c46eabb3a67bd2993e237ab5517f00a5f1813 -
References () https://git.kernel.org/stable/c/f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f - () https://git.kernel.org/stable/c/f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f -

12 Jul 2024, 13:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-07-12 13:15

Updated : 2025-03-06 12:53

NVD link : CVE-2024-40931

Mitre link : CVE-2024-40931

CVE.ORG link : CVE-2024-40931

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-908

Use of Uninitialized Resource