fkie_cve-2024-27007
Vulnerability from fkie_nvd
Published
2024-05-01 06:15
Modified
2024-11-21 09:03
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: userfaultfd: change src_folio after ensuring it's unpinned in UFFDIO_MOVE Commit d7a08838ab74 ("mm: userfaultfd: fix unexpected change to src_folio when UFFDIO_MOVE fails") moved the src_folio->{mapping, index} changing to after clearing the page-table and ensuring that it's not pinned. This avoids failure of swapout+migration and possibly memory corruption. However, the commit missed fixing it in the huge-page case.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c0205eaf3af9f5db14d4b5ee4abacf4a583c3c50
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/df5f6e683e7f21a15d8be6e7a0c7a46436963ebe
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c0205eaf3af9f5db14d4b5ee4abacf4a583c3c50
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/df5f6e683e7f21a15d8be6e7a0c7a46436963ebe
Impacted products
Vendor Product Version


To clipboard 

{
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In the Linux kernel, the following vulnerability has been resolved:\n\nuserfaultfd: change src_folio after ensuring it's unpinned in UFFDIO_MOVE\n\nCommit d7a08838ab74 (\"mm: userfaultfd: fix unexpected change to src_folio\nwhen UFFDIO_MOVE fails\") moved the src_folio->{mapping, index} changing to\nafter clearing the page-table and ensuring that it's not pinned.  This\navoids failure of swapout+migration and possibly memory corruption.\n\nHowever, the commit missed fixing it in the huge-page case.",
      },
      {
         lang: "es",
         value: "En el kernel de Linux, se resolvió la siguiente vulnerabilidad: userfaultfd: cambie src_folio después de asegurarse de que no esté fijado en UFFDIO_MOVE Commit d7a08838ab74 (\"mm: userfaultfd: corrija el cambio inesperado en src_folio cuando UFFDIO_MOVE falla\") movió src_folio->{mapping, index} cambiando a después de borrar la tabla de páginas y asegurarse de que no esté fijada. Esto evita fallos en el intercambio+migración y posiblemente daños en la memoria. Sin embargo, la confirmación no solucionó el problema en el caso de la página enorme.",
      },
   ],
   id: "CVE-2024-27007",
   lastModified: "2024-11-21T09:03:36.437",
   metrics: {},
   published: "2024-05-01T06:15:19.180",
   references: [
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         url: "https://git.kernel.org/stable/c/c0205eaf3af9f5db14d4b5ee4abacf4a583c3c50",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         url: "https://git.kernel.org/stable/c/df5f6e683e7f21a15d8be6e7a0c7a46436963ebe",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://git.kernel.org/stable/c/c0205eaf3af9f5db14d4b5ee4abacf4a583c3c50",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://git.kernel.org/stable/c/df5f6e683e7f21a15d8be6e7a0c7a46436963ebe",
      },
   ],
   sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
   vulnStatus: "Awaiting Analysis",
}


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