CVE-2022-49710 (GCVE-0-2022-49710)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:24 – Updated: 2025-05-04 08:43
VLAI?
Title
dm mirror log: round up region bitmap size to BITS_PER_LONG
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 29121bd0b00ebb9524971a583fea4a2f7afe8041 , < ae460312875159285cef5bf3dc654593f404a1ef (git)
Affected: 29121bd0b00ebb9524971a583fea4a2f7afe8041 , < ba751f0d25f07aa21ce9b85372a3792bf7969d13 (git)
Affected: 29121bd0b00ebb9524971a583fea4a2f7afe8041 , < 0d2209b54f1de0c2f99cab246d4cf2cfe24aaaa9 (git)
Affected: 29121bd0b00ebb9524971a583fea4a2f7afe8041 , < 9a02f3275acc628c0d956be771405ced79ac36df (git)
Affected: 29121bd0b00ebb9524971a583fea4a2f7afe8041 , < 85e123c27d5cbc22cfdc01de1e2ca1d9003a02d0 (git)
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    Linux Linux Affected: 2.6.18
Unaffected: 0 , < 2.6.18 (semver)
Unaffected: 5.4.200 , ≤ 5.4.* (semver)
Unaffected: 5.10.124 , ≤ 5.10.* (semver)
Unaffected: 5.15.49 , ≤ 5.15.* (semver)
Unaffected: 5.18.6 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
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      "cpeApplicability": [
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      "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."
        }
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      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:43:50.278Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/85e123c27d5cbc22cfdc01de1e2ca1d9003a02d0"
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      "title": "dm mirror log: round up region bitmap size to BITS_PER_LONG",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49710",
    "datePublished": "2025-02-26T02:24:27.532Z",
    "dateReserved": "2025-02-26T02:21:30.444Z",
    "dateUpdated": "2025-05-04T08:43:50.278Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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