CVE-2024-49872

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  3. CVE-2024-49872

4.7 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

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: mm/gup: fix memfd_pin_folios alloc race panic If memfd_pin_folios tries to create a hugetlb page, but someone else already did, then folio gets the value -EEXIST here: folio = memfd_alloc_folio(memfd, start_idx); if (IS_ERR(folio)) { ret = PTR_ERR(folio); if (ret != -EEXIST) goto err; then on the next trip through the "while start_idx" loop we panic here: if (folio) { folio_put(folio); To fix, set the folio to NULL on error.

References
Link Resource
https://git.kernel.org/stable/c/ce645b9fdc78ec5d28067286e92871ddae6817d5 Patch
https://git.kernel.org/stable/c/e28f39b359c0cfdcc011603e51187085a5f1e5e3 Patch
Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

13 Nov 2024, 14:26

Type Values Removed Values Added
CWE CWE-362
References () https://git.kernel.org/stable/c/ce645b9fdc78ec5d28067286e92871ddae6817d5 - () https://git.kernel.org/stable/c/ce645b9fdc78ec5d28067286e92871ddae6817d5 - Patch
References () https://git.kernel.org/stable/c/e28f39b359c0cfdcc011603e51187085a5f1e5e3 - () https://git.kernel.org/stable/c/e28f39b359c0cfdcc011603e51187085a5f1e5e3 - Patch
First Time Linux
Linux linux Kernel
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 4.7

23 Oct 2024, 15:13

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm/gup: corregir pánico en ejecución de asignación de memfd_pin_folios Si memfd_pin_folios intenta crear una página hugetlb, pero alguien más ya lo hizo, entonces folio obtiene el valor -EEXIST aquí: folio = memfd_alloc_folio(memfd, start_idx); if (IS_ERR(folio)) { ret = PTR_ERR(folio); if (ret != -EEXIST) goto err; luego en el siguiente viaje a través del bucle "while start_idx" entramos en pánico aquí: if (folio) { folio_put(folio); Para corregirlo, configure folio en NULL en caso de error.

21 Oct 2024, 18:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-10-21 18:15

Updated : 2024-11-13 14:26

NVD link : CVE-2024-49872

Mitre link : CVE-2024-49872

CVE.ORG link : CVE-2024-49872

JSON object : View

Products Affected

linux

CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')