CVE-2022-50215

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-50215
In the Linux kernel, the following vulnerability has been resolved: scsi: sg: Allow waiting for commands to complete on removed device When a SCSI device is removed while in active use, currently sg will immediately return -ENODEV on any attempt to wait for active commands that were sent before the removal. This is problematic for commands that use SG_FLAG_DIRECT_IO since the data buffer may still be in use by the kernel when userspace frees or reuses it after getting ENODEV, leading to corrupted userspace memory (in the case of READ-type commands) or corrupted data being sent to the device (in the case of WRITE-type commands). This has been seen in practice when logging out of a iscsi_tcp session, where the iSCSI driver may still be processing commands after the device has been marked for removal. Change the policy to allow userspace to wait for active sg commands even when the device is being removed. Return -ENODEV only when there are no more responses to read.

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/03d8241112d5e3cccce1a01274a221099f07d2e1 Patch
https://git.kernel.org/stable/c/3455607fd7be10b449f5135c00dc306b85dc0d21 Patch
https://git.kernel.org/stable/c/35e60ec39e862159cb92923eefd5230d4a873cb9 Patch
https://git.kernel.org/stable/c/408bfa1489a3cfe7150b81ab0b0df99b23dd5411 Patch
https://git.kernel.org/stable/c/8c004b7dbb340c1e5889f5fb9e5baa6f6e5303e8 Patch
https://git.kernel.org/stable/c/bbc118acf7baf9e93c5e1314d14f481301af4d0f Patch
https://git.kernel.org/stable/c/ed9afd967cbfe7da2dc0d5e52c62a778dfe9f16b Patch
https://git.kernel.org/stable/c/f135c65085eed869d10e4e7923ce1015288618da Patch
https://git.kernel.org/stable/c/f5e61d9b4a699dd16f32d5f39eb1cf98d84c92ed 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

19 Nov 2025, 12:59

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE NVD-CWE-noinfo
References () https://git.kernel.org/stable/c/03d8241112d5e3cccce1a01274a221099f07d2e1 - () https://git.kernel.org/stable/c/03d8241112d5e3cccce1a01274a221099f07d2e1 - Patch
References () https://git.kernel.org/stable/c/3455607fd7be10b449f5135c00dc306b85dc0d21 - () https://git.kernel.org/stable/c/3455607fd7be10b449f5135c00dc306b85dc0d21 - Patch
References () https://git.kernel.org/stable/c/35e60ec39e862159cb92923eefd5230d4a873cb9 - () https://git.kernel.org/stable/c/35e60ec39e862159cb92923eefd5230d4a873cb9 - Patch
References () https://git.kernel.org/stable/c/408bfa1489a3cfe7150b81ab0b0df99b23dd5411 - () https://git.kernel.org/stable/c/408bfa1489a3cfe7150b81ab0b0df99b23dd5411 - Patch
References () https://git.kernel.org/stable/c/8c004b7dbb340c1e5889f5fb9e5baa6f6e5303e8 - () https://git.kernel.org/stable/c/8c004b7dbb340c1e5889f5fb9e5baa6f6e5303e8 - Patch
References () https://git.kernel.org/stable/c/bbc118acf7baf9e93c5e1314d14f481301af4d0f - () https://git.kernel.org/stable/c/bbc118acf7baf9e93c5e1314d14f481301af4d0f - Patch
References () https://git.kernel.org/stable/c/ed9afd967cbfe7da2dc0d5e52c62a778dfe9f16b - () https://git.kernel.org/stable/c/ed9afd967cbfe7da2dc0d5e52c62a778dfe9f16b - Patch
References () https://git.kernel.org/stable/c/f135c65085eed869d10e4e7923ce1015288618da - () https://git.kernel.org/stable/c/f135c65085eed869d10e4e7923ce1015288618da - Patch
References () https://git.kernel.org/stable/c/f5e61d9b4a699dd16f32d5f39eb1cf98d84c92ed - () https://git.kernel.org/stable/c/f5e61d9b4a699dd16f32d5f39eb1cf98d84c92ed - Patch
First Time Linux
Linux linux Kernel
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: sg: Permitir esperar a que se completen los comandos en el dispositivo eliminado Cuando se elimina un dispositivo SCSI mientras está en uso activo, actualmente sg devolverá inmediatamente -ENODEV en cualquier intento de esperar los comandos activos que se enviaron antes de la eliminación. Esto es problemático para los comandos que usan SG_FLAG_DIRECT_IO ya que el búfer de datos puede seguir en uso por el kernel cuando el espacio de usuario lo libera o lo reutiliza después de obtener ENODEV, lo que lleva a la memoria del espacio de usuario dañada (en el caso de comandos de tipo READ) o al envío de datos dañados al dispositivo (en el caso de comandos de tipo WRITE). Esto se ha visto en la práctica al cerrar sesión en una sesión iscsi_tcp, donde el controlador iSCSI puede seguir procesando comandos después de que el dispositivo se haya marcado para su eliminación. Cambie la política para permitir que el espacio de usuario espere comandos sg activos incluso cuando se esté eliminando el dispositivo. Devuelva -ENODEV solo cuando no haya más respuestas para leer.

18 Jun 2025, 11:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-06-18 11:15

Updated : 2025-11-19 12:59

NVD link : CVE-2022-50215

Mitre link : CVE-2022-50215

CVE.ORG link : CVE-2022-50215

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo