FKIE_CVE-2024-56756

Vulnerability from fkie_nvd - Published: 2024-12-29 12:15 - Updated: 2025-11-03 21:18
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix freeing of the HMB descriptor table The HMB descriptor table is sized to the maximum number of descriptors that could be used for a given device, but __nvme_alloc_host_mem could break out of the loop earlier on memory allocation failure and end up using less descriptors than planned for, which leads to an incorrect size passed to dma_free_coherent. In practice this was not showing up because the number of descriptors tends to be low and the dma coherent allocator always allocates and frees at least a page.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c2fb1ca8086eb139b2a551358137525ae8e0d7aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/452f9ddd12bebc04cef741e8ba3806bf0e1fd015Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/582d9ed999b004fb1d415ecbfa86d4d8df455269Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6d0f599db73b099aa724a12736369c4d4d92849dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/869cf50b9c9d1059f5223f79ef68fc0bc6210095Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ac22240540e0c5230d8c4138e3778420b712716aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cee3bff51a35cab1c5d842d409a7b11caefe2386Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fb96d5cfa97a7363245b3dd523f475b04296d87bPatch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-pci: fix freeing of the HMB descriptor table\n\nThe HMB descriptor table is sized to the maximum number of descriptors\nthat could be used for a given device, but __nvme_alloc_host_mem could\nbreak out of the loop earlier on memory allocation failure and end up\nusing less descriptors than planned for, which leads to an incorrect\nsize passed to dma_free_coherent.\n\nIn practice this was not showing up because the number of descriptors\ntends to be low and the dma coherent allocator always allocates and\nfrees at least a page."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nvme-pci: se corrige la liberaci\u00f3n de la tabla de descriptores HMB La tabla de descriptores HMB tiene un tama\u00f1o que coincide con el n\u00famero m\u00e1ximo de descriptores que se pueden usar para un dispositivo determinado, pero __nvme_alloc_host_mem podr\u00eda salir del bucle antes en caso de fallo en la asignaci\u00f3n de memoria y terminar usando menos descriptores de lo planeado, lo que lleva a que se pase un tama\u00f1o incorrecto a dma_free_coherent. En la pr\u00e1ctica, esto no se mostraba porque el n\u00famero de descriptores tiende a ser bajo y el asignador coherente dma siempre asigna y libera al menos una p\u00e1gina."
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  "id": "CVE-2024-56756",
  "lastModified": "2025-11-03T21:18:27.780",
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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.