FKIE_CVE-2024-50096

Vulnerability from fkie_nvd - Published: 2024-11-05 17:15 - Updated: 2025-11-03 23:16
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
In the Linux kernel, the following vulnerability has been resolved: nouveau/dmem: Fix vulnerability in migrate_to_ram upon copy error The `nouveau_dmem_copy_one` function ensures that the copy push command is sent to the device firmware but does not track whether it was executed successfully. In the case of a copy error (e.g., firmware or hardware failure), the copy push command will be sent via the firmware channel, and `nouveau_dmem_copy_one` will likely report success, leading to the `migrate_to_ram` function returning a dirty HIGH_USER page to the user. This can result in a security vulnerability, as a HIGH_USER page that may contain sensitive or corrupted data could be returned to the user. To prevent this vulnerability, we allocate a zero page. Thus, in case of an error, a non-dirty (zero) page will be returned to the user.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/614bfb2050982d23d53d0d51c4079dba0437c883Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/697e3ddcf1f8b68bd531fc34eead27c000bdf3e1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/73f75d2b5aee5a735cf64b8ab4543d5c20dbbdd9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/835745a377a4519decd1a36d6b926e369b3033e2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8c3de9282dde21ce3c1bf1bde3166a4510547aa9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ab4d113b6718b076046018292f821d5aa4b844f8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fd9bb7e996bab9b9049fffe3f3d3b50dee191d27Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/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 6.12
linux linux_kernel 6.12
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnouveau/dmem: Fix vulnerability in migrate_to_ram upon copy error\n\nThe `nouveau_dmem_copy_one` function ensures that the copy push command is\nsent to the device firmware but does not track whether it was executed\nsuccessfully.\n\nIn the case of a copy error (e.g., firmware or hardware failure), the\ncopy push command will be sent via the firmware channel, and\n`nouveau_dmem_copy_one` will likely report success, leading to the\n`migrate_to_ram` function returning a dirty HIGH_USER page to the user.\n\nThis can result in a security vulnerability, as a HIGH_USER page that may\ncontain sensitive or corrupted data could be returned to the user.\n\nTo prevent this vulnerability, we allocate a zero page. Thus, in case of\nan error, a non-dirty (zero) page will be returned to the user."
    },
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nouveau/dmem: Se corrige la vulnerabilidad en migrants_to_ram tras un error de copia. La funci\u00f3n `nouveau_dmem_copy_one` garantiza que el comando de copia push se env\u00ede al firmware del dispositivo, pero no rastrea si se ejecut\u00f3 correctamente. En el caso de un error de copia (por ejemplo, fallo del firmware o hardware), el comando de copia push se enviar\u00e1 a trav\u00e9s del canal de firmware y `nouveau_dmem_copy_one` probablemente informar\u00e1 el \u00e9xito, lo que llevar\u00e1 a la funci\u00f3n `migrate_to_ram` a devolver una p\u00e1gina HIGH_USER sucia al usuario. Esto puede resultar en una vulnerabilidad de seguridad, ya que una p\u00e1gina HIGH_USER que puede contener datos confidenciales o da\u00f1ados podr\u00eda devolverse al usuario. Para evitar esta vulnerabilidad, asignamos una p\u00e1gina cero. Por lo tanto, en caso de un error, se devolver\u00e1 al usuario una p\u00e1gina no sucia (cero)."
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  "id": "CVE-2024-50096",
  "lastModified": "2025-11-03T23:16:50.277",
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  • 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.
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