CVE-2024-39477

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-39477
In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: do not call vma_add_reservation upon ENOMEM sysbot reported a splat [1] on __unmap_hugepage_range(). This is because vma_needs_reservation() can return -ENOMEM if allocate_file_region_entries() fails to allocate the file_region struct for the reservation. Check for that and do not call vma_add_reservation() if that is the case, otherwise region_abort() and region_del() will see that we do not have any file_regions. If we detect that vma_needs_reservation() returned -ENOMEM, we clear the hugetlb_restore_reserve flag as if this reservation was still consumed, so free_huge_folio() will not increment the resv count. [1] https://lore.kernel.org/linux-mm/0000000000004096100617c58d54@google.com/T/#ma5983bc1ab18a54910da83416b3f89f3c7ee43aa

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/8daf9c702ee7f825f0de8600abff764acfedea13 Mailing List Patch
https://git.kernel.org/stable/c/aa998f9dcb34c28448f86e8f5490f20d5eb0eac7 Mailing List Patch
https://git.kernel.org/stable/c/8daf9c702ee7f825f0de8600abff764acfedea13 Mailing List Patch
https://git.kernel.org/stable/c/aa998f9dcb34c28448f86e8f5490f20d5eb0eac7 Mailing List Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10.0:rc2:*:*:*:*:*:*
History

21 Nov 2024, 09:27

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/8daf9c702ee7f825f0de8600abff764acfedea13 - Mailing List, Patch () https://git.kernel.org/stable/c/8daf9c702ee7f825f0de8600abff764acfedea13 - Mailing List, Patch
References () https://git.kernel.org/stable/c/aa998f9dcb34c28448f86e8f5490f20d5eb0eac7 - Mailing List, Patch () https://git.kernel.org/stable/c/aa998f9dcb34c28448f86e8f5490f20d5eb0eac7 - Mailing List, Patch

08 Jul 2024, 17:11

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/8daf9c702ee7f825f0de8600abff764acfedea13 - () https://git.kernel.org/stable/c/8daf9c702ee7f825f0de8600abff764acfedea13 - Mailing List, Patch
References () https://git.kernel.org/stable/c/aa998f9dcb34c28448f86e8f5490f20d5eb0eac7 - () https://git.kernel.org/stable/c/aa998f9dcb34c28448f86e8f5490f20d5eb0eac7 - Mailing List, Patch
CWE CWE-770
First Time Linux
Linux linux Kernel
CPE cpe:2.3:o:linux:linux_kernel:6.10.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

05 Jul 2024, 12:55

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: mm/hugetlb: no llame a vma_add_reservation cuando ENOMEM sysbot informó un splat [1] en __unmap_hugepage_range(). Esto se debe a que vma_needs_reservation() puede devolver -ENOMEM si allocate_file_region_entries() no puede asignar la estructura file_region para la reserva. Verifique eso y no llame a vma_add_reservation() si ese es el caso; de lo contrario, region_abort() y region_del() verán que no tenemos ningún file_regions. Si detectamos que vma_needs_reservation() devolvió -ENOMEM, borramos el indicador hugetlb_restore_reserve como si esta reserva todavía estuviera consumida, por lo que free_huge_folio() no incrementará el recuento de resv. [1] https://lore.kernel.org/linux-mm/0000000000004096100617c58d54@google.com/T/#ma5983bc1ab18a54910da83416b3f89f3c7ee43aa

05 Jul 2024, 07:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-07-05 07:15

Updated : 2024-11-21 09:27

NVD link : CVE-2024-39477

Mitre link : CVE-2024-39477

CVE.ORG link : CVE-2024-39477

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-770

Allocation of Resources Without Limits or Throttling