FKIE_CVE-2024-53148

Vulnerability from fkie_nvd - Published: 2024-12-24 12:15 - Updated: 2025-11-03 21:17
Severity ?
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: comedi: Flush partial mappings in error case If some remap_pfn_range() calls succeeded before one failed, we still have buffer pages mapped into the userspace page tables when we drop the buffer reference with comedi_buf_map_put(bm). The userspace mappings are only cleaned up later in the mmap error path. Fix it by explicitly flushing all mappings in our VMA on the error path. See commit 79a61cc3fc04 ("mm: avoid leaving partial pfn mappings around in error case").
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/16c507df509113c037cdc0ba642b9ab3389bd26cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/297f14fbb81895f4ccdb0ad25d196786d6461e00Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/57f048c2d205b85e34282a9b0b0ae177e84c2f44Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8797b7712de704dc231f9e821d8eb3b9aeb3a032Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9b07fb464eb69a752406e78e62ab3a60bfa7b00dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b9322408d83accc8b96322bc7356593206288c56Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c6963a06ce5c61d3238751ada04ee1569663a828Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ce8f9fb651fac95dd41f69afe54d935420b945bdPatch
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\ncomedi: Flush partial mappings in error case\n\nIf some remap_pfn_range() calls succeeded before one failed, we still have\nbuffer pages mapped into the userspace page tables when we drop the buffer\nreference with comedi_buf_map_put(bm). The userspace mappings are only\ncleaned up later in the mmap error path.\n\nFix it by explicitly flushing all mappings in our VMA on the error path.\n\nSee commit 79a61cc3fc04 (\"mm: avoid leaving partial pfn mappings around in\nerror case\")."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: comedi: vaciar asignaciones parciales en caso de error. Si algunas llamadas a remap_pfn_range() tuvieron \u00e9xito antes de que una fallara, todav\u00eda tenemos p\u00e1ginas de b\u00fafer asignadas a las tablas de p\u00e1ginas del espacio de usuario cuando eliminamos la referencia de b\u00fafer con comedi_buf_map_put (bm). Las asignaciones del espacio de usuario solo se limpian m\u00e1s adelante en la ruta de error mmap. Solucionelo eliminando expl\u00edcitamente todas las asignaciones en nuestro VMA en la ruta del error. Consulte el commit 79a61cc3fc04 (\"mm: evite dejar asignaciones pfn parciales en caso de error\")."
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  • 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.
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Detection rules are retrieved from Rulezet.