fkie_cve-2022-49710
Vulnerability from fkie_nvd
Published
2025-02-26 07:01
Modified
2025-02-26 07:01
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: dm mirror log: round up region bitmap size to BITS_PER_LONG The code in dm-log rounds up bitset_size to 32 bits. It then uses find_next_zero_bit_le on the allocated region. find_next_zero_bit_le accesses the bitmap using unsigned long pointers. So, on 64-bit architectures, it may access 4 bytes beyond the allocated size. Fix this bug by rounding up bitset_size to BITS_PER_LONG. This bug was found by running the lvm2 testsuite with kasan.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0d2209b54f1de0c2f99cab246d4cf2cfe24aaaa9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/85e123c27d5cbc22cfdc01de1e2ca1d9003a02d0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9a02f3275acc628c0d956be771405ced79ac36df
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ae460312875159285cef5bf3dc654593f404a1ef
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ba751f0d25f07aa21ce9b85372a3792bf7969d13
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm mirror log: round up region bitmap size to BITS_PER_LONG\n\nThe code in dm-log rounds up bitset_size to 32 bits. It then uses\nfind_next_zero_bit_le on the allocated region. find_next_zero_bit_le\naccesses the bitmap using unsigned long pointers. So, on 64-bit\narchitectures, it may access 4 bytes beyond the allocated size.\n\nFix this bug by rounding up bitset_size to BITS_PER_LONG.\n\nThis bug was found by running the lvm2 testsuite with kasan."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dm mirror log: redondear el tama\u00f1o del mapa de bits de la regi\u00f3n a BITS_PER_LONG El c\u00f3digo en dm-log redondea bitset_size a 32 bits. Luego usa find_next_zero_bit_le en la regi\u00f3n asignada. find_next_zero_bit_le accede al mapa de bits usando punteros largos sin signo. Por lo tanto, en arquitecturas de 64 bits, puede acceder a 4 bytes m\u00e1s all\u00e1 del tama\u00f1o asignado. Corrija este error redondeando bitset_size a BITS_PER_LONG. Este error se encontr\u00f3 ejecutando el conjunto de pruebas lvm2 con kasan."
    }
  ],
  "id": "CVE-2022-49710",
  "lastModified": "2025-02-26T07:01:46.800",
  "metrics": {},
  "published": "2025-02-26T07:01:46.800",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0d2209b54f1de0c2f99cab246d4cf2cfe24aaaa9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/85e123c27d5cbc22cfdc01de1e2ca1d9003a02d0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9a02f3275acc628c0d956be771405ced79ac36df"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ae460312875159285cef5bf3dc654593f404a1ef"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ba751f0d25f07aa21ce9b85372a3792bf7969d13"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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