CVE-2021-47328

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47328
In the Linux kernel, the following vulnerability has been resolved: scsi: iscsi: Fix conn use after free during resets If we haven't done a unbind target call we can race where iscsi_conn_teardown wakes up the EH thread and then frees the conn while those threads are still accessing the conn ehwait. We can only do one TMF per session so this just moves the TMF fields from the conn to the session. We can then rely on the iscsi_session_teardown->iscsi_remove_session->__iscsi_unbind_session call to remove the target and it's devices, and know after that point there is no device or scsi-ml callout trying to access the session.

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250 Patch
https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11 Patch
https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00 Patch
https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506 Patch
https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1 Patch
https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9 Patch
https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250 Patch
https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11 Patch
https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00 Patch
https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506 Patch
https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1 Patch
https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9 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:*:*:*:*:*:*:*:*
History

26 Dec 2024, 19:52

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
CWE CWE-416
First Time Linux linux Kernel
Linux
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250 - () https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250 - Patch
References () https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11 - () https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11 - Patch
References () https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00 - () https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00 - Patch
References () https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506 - () https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506 - Patch
References () https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1 - () https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1 - Patch
References () https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9 - () https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9 - Patch

21 Nov 2024, 06:35

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250 - () https://git.kernel.org/stable/c/89812e7957ab0746eab66ed6fc49d52bb4dca250 -
References () https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11 - () https://git.kernel.org/stable/c/bf20d85a88384574fabb3d53ad62a8af57e7ab11 -
References () https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00 - () https://git.kernel.org/stable/c/d04958a348e560938410e04a12fb99da9c7e6a00 -
References () https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506 - () https://git.kernel.org/stable/c/ec29d0ac29be366450a7faffbcf8cba3a6a3b506 -
References () https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1 - () https://git.kernel.org/stable/c/f0a031f7c55ffd944fead1ddaf2aa94df9a158c1 -
References () https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9 - () https://git.kernel.org/stable/c/fa9542b35ceb4202e8f8d65f440529a63524dca9 -
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: iscsi: corrige el uso de la conexión después de liberarla durante los reinicios. Si no hemos realizado una llamada de destino de desvinculación, podemos correr donde iscsi_conn_teardown activa el subproceso EH y luego libera la conexión mientras esos Los hilos todavía están accediendo a la conexión ehwait. Solo podemos hacer un TMF por sesión, por lo que esto simplemente mueve los campos TMF de la conexión a la sesión. Luego podemos confiar en la llamada iscsi_session_teardown->iscsi_remove_session->__iscsi_unbind_session para eliminar el objetivo y sus dispositivos, y saber después de ese punto que no hay ningún dispositivo o llamada scsi-ml intentando acceder a la sesión.

21 May 2024, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-05-21 15:15

Updated : 2024-12-26 19:52

NVD link : CVE-2021-47328

Mitre link : CVE-2021-47328

CVE.ORG link : CVE-2021-47328

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-416

Use After Free