CVE-2024-43854

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-43854
In the Linux kernel, the following vulnerability has been resolved: block: initialize integrity buffer to zero before writing it to media Metadata added by bio_integrity_prep is using plain kmalloc, which leads to random kernel memory being written media. For PI metadata this is limited to the app tag that isn't used by kernel generated metadata, but for non-PI metadata the entire buffer leaks kernel memory. Fix this by adding the __GFP_ZERO flag to allocations for writes.

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/129f95948a96105c1fad8e612c9097763e88ac5f
https://git.kernel.org/stable/c/23a19655fb56f241e592041156dfb1c6d04da644 Patch
https://git.kernel.org/stable/c/3fd11fe4f20756b4c0847f755a64cd96f8c6a005
https://git.kernel.org/stable/c/899ee2c3829c5ac14bfc7d3c4a5846c0b709b78f Patch
https://git.kernel.org/stable/c/9f4af4cf08f9a0329ade3d938f55d2220c40d0a6
https://git.kernel.org/stable/c/cf6b45ea7a8df0f61bded1dc4a8561ac6ad143d2 Patch
https://git.kernel.org/stable/c/d418313bd8f55c079a7da12651951b489a638ac1 Patch
https://git.kernel.org/stable/c/ebc0e91ba76dc6544fff9f5b66408b1982806a00 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:*:*:*:*:*:*:*:*
History

12 Sep 2024, 12:15

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/129f95948a96105c1fad8e612c9097763e88ac5f -
  • () https://git.kernel.org/stable/c/3fd11fe4f20756b4c0847f755a64cd96f8c6a005 -
  • () https://git.kernel.org/stable/c/9f4af4cf08f9a0329ade3d938f55d2220c40d0a6 -

22 Aug 2024, 18:12

Type Values Removed Values Added
CWE CWE-401
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux linux Kernel
Linux
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/23a19655fb56f241e592041156dfb1c6d04da644 - () https://git.kernel.org/stable/c/23a19655fb56f241e592041156dfb1c6d04da644 - Patch
References () https://git.kernel.org/stable/c/899ee2c3829c5ac14bfc7d3c4a5846c0b709b78f - () https://git.kernel.org/stable/c/899ee2c3829c5ac14bfc7d3c4a5846c0b709b78f - Patch
References () https://git.kernel.org/stable/c/cf6b45ea7a8df0f61bded1dc4a8561ac6ad143d2 - () https://git.kernel.org/stable/c/cf6b45ea7a8df0f61bded1dc4a8561ac6ad143d2 - Patch
References () https://git.kernel.org/stable/c/d418313bd8f55c079a7da12651951b489a638ac1 - () https://git.kernel.org/stable/c/d418313bd8f55c079a7da12651951b489a638ac1 - Patch
References () https://git.kernel.org/stable/c/ebc0e91ba76dc6544fff9f5b66408b1982806a00 - () https://git.kernel.org/stable/c/ebc0e91ba76dc6544fff9f5b66408b1982806a00 - Patch

19 Aug 2024, 12:59

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: bloque: inicializa el búfer de integridad a cero antes de escribirlo en el medio. Los metadatos agregados por bio_integrity_prep utilizan kmalloc simple, lo que lleva a que la memoria del kernel se escriba en el medio de forma aleatoria. Para los metadatos de PI, esto se limita a la etiqueta de la aplicación que no es utilizada por los metadatos generados por el kernel, pero para los metadatos que no son de PI, todo el búfer pierde memoria del kernel. Solucione este problema agregando el indicador __GFP_ZERO a las asignaciones para escrituras.

19 Aug 2024, 05:15

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/cf6b45ea7a8df0f61bded1dc4a8561ac6ad143d2 -

17 Aug 2024, 10:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-08-17 10:15

Updated : 2024-09-12 12:15

NVD link : CVE-2024-43854

Mitre link : CVE-2024-43854

CVE.ORG link : CVE-2024-43854

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime