CVE-2022-49478 (GCVE-0-2022-49478)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:13 – Updated: 2025-10-01 19:46
VLAI?
Title
media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init
Summary
In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init Syzbot reported that -1 is used as array index. The problem was in missing validation check. hdw->unit_number is initialized with -1 and then if init table walk fails this value remains unchanged. Since code blindly uses this member for array indexing adding sanity check is the easiest fix for that. hdw->workpoll initialization moved upper to prevent warning in __flush_work.
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-129 - Improper Validation of Array Index
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < 4351bfe36aba9fa7dc9d68d498d25d41a0f45e67 (git)
Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < 2e004fe914b243db41fa96f9e583385f360ea58e (git)
Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < a3660e06675bccec4bf149c7229ea1d491ba10d7 (git)
Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < 1310fc3538dcc375a2f46ef0a438512c2ca32827 (git)
Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < a3304766d9384886e6d3092c776273526947a2e9 (git)
Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < 3309c2c574e13b21b44729f5bdbf21f60189b79a (git)
Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < f99a8b1ec0eddc2931aeaa4f490277a15b39f511 (git)
Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < 24e807541e4a9263ed928e6ae3498de3ad43bd1e (git)
Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < 471bec68457aaf981add77b4f590d65dd7da1059 (git)
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    Linux Linux Affected: 2.6.18
Unaffected: 0 , < 2.6.18 (semver)
Unaffected: 4.9.318 , ≤ 4.9.* (semver)
Unaffected: 4.14.283 , ≤ 4.14.* (semver)
Unaffected: 4.19.247 , ≤ 4.19.* (semver)
Unaffected: 5.4.198 , ≤ 5.4.* (semver)
Unaffected: 5.10.121 , ≤ 5.10.* (semver)
Unaffected: 5.15.46 , ≤ 5.15.* (semver)
Unaffected: 5.17.14 , ≤ 5.17.* (semver)
Unaffected: 5.18.3 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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The problem was in\\nmissing validation check.\\n\\nhdw-\u003eunit_number is initialized with -1 and then if init table walk fails\\nthis value remains unchanged. Since code blindly uses this member for\\narray indexing adding sanity check is the easiest fix for that.\\n\\nhdw-\u003eworkpoll initialization moved upper to prevent warning in\\n__flush_work.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.318\", \"versionStartIncluding\": \"2.6.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.283\", \"versionStartIncluding\": \"2.6.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.247\", \"versionStartIncluding\": \"2.6.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.198\", \"versionStartIncluding\": \"2.6.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.121\", \"versionStartIncluding\": \"2.6.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.46\", \"versionStartIncluding\": \"2.6.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17.14\", \"versionStartIncluding\": \"2.6.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18.3\", \"versionStartIncluding\": \"2.6.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.19\", \"versionStartIncluding\": \"2.6.18\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T08:38:35.676Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49478\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-01T19:46:45.541Z\", \"dateReserved\": \"2025-02-26T02:08:31.581Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T02:13:19.330Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.