CVE-2022-49938

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49938
In the Linux kernel, the following vulnerability has been resolved: cifs: fix small mempool leak in SMB2_negotiate() In some cases of failure (dialect mismatches) in SMB2_negotiate(), after the request is sent, the checks would return -EIO when they should be rather setting rc = -EIO and jumping to neg_exit to free the response buffer from mempool.

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/27893dfc1285f80f80f46b3b8c95f5d15d2e66d0 Patch
https://git.kernel.org/stable/c/38a6b469bf22f153282fbe7d702a24e9eb43f50e Patch
https://git.kernel.org/stable/c/9e3c9efa7caf16e5acc05eab5e4d0a714e1610b0 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:6.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:*
History

14 Nov 2025, 20:25

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cifs: corrige una pequeña pérdida de mempool en SMB2_negotiate() En algunos casos de falla (desajustes de dialecto) en SMB2_negotiate(), después de enviar la solicitud, las verificaciones devolverían -EIO cuando deberían establecer rc = -EIO y saltar a neg_exit para liberar el búfer de respuesta de mempool.
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux
Linux linux Kernel
CWE CWE-401
References () https://git.kernel.org/stable/c/27893dfc1285f80f80f46b3b8c95f5d15d2e66d0 - () https://git.kernel.org/stable/c/27893dfc1285f80f80f46b3b8c95f5d15d2e66d0 - Patch
References () https://git.kernel.org/stable/c/38a6b469bf22f153282fbe7d702a24e9eb43f50e - () https://git.kernel.org/stable/c/38a6b469bf22f153282fbe7d702a24e9eb43f50e - Patch
References () https://git.kernel.org/stable/c/9e3c9efa7caf16e5acc05eab5e4d0a714e1610b0 - () https://git.kernel.org/stable/c/9e3c9efa7caf16e5acc05eab5e4d0a714e1610b0 - Patch
CPE cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

18 Jun 2025, 11:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-06-18 11:15

Updated : 2025-11-14 20:25

NVD link : CVE-2022-49938

Mitre link : CVE-2022-49938

CVE.ORG link : CVE-2022-49938

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime