CVE-2023-52445 (GCVE-0-2023-52445)

Vulnerability from cvelistv5 – Published: 2024-02-22 16:21 – Updated: 2025-05-04 07:36
VLAI?
Title
media: pvrusb2: fix use after free on context disconnection
Summary
In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix use after free on context disconnection Upon module load, a kthread is created targeting the pvr2_context_thread_func function, which may call pvr2_context_destroy and thus call kfree() on the context object. However, that might happen before the usb hub_event handler is able to notify the driver. This patch adds a sanity check before the invalid read reported by syzbot, within the context disconnection call stack.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: e5be15c63804e05b5a94197524023702a259e308 , < ec36c134dd020d28e312c2f1766f85525e747aab (git)
Affected: e5be15c63804e05b5a94197524023702a259e308 , < 47aa8fcd5e8b5563af4042a00f25ba89bef8f33d (git)
Affected: e5be15c63804e05b5a94197524023702a259e308 , < 3233d8bf7893550045682192cb227af7fa3defeb (git)
Affected: e5be15c63804e05b5a94197524023702a259e308 , < ec3634ebe23fc3c44ebc67c6d25917300bc68c08 (git)
Affected: e5be15c63804e05b5a94197524023702a259e308 , < 30773ea47d41773f9611ffb4ebc9bda9d19a9e7e (git)
Affected: e5be15c63804e05b5a94197524023702a259e308 , < 2cf0005d315549b8d2b940ff96a66c2a889aa795 (git)
Affected: e5be15c63804e05b5a94197524023702a259e308 , < 437b5f57732bb4cc32cc9f8895d2010ee9ff521c (git)
Affected: e5be15c63804e05b5a94197524023702a259e308 , < ded85b0c0edd8f45fec88783d7555a5b982449c1 (git)
Create a notification for this product.
    Linux Linux Affected: 2.6.26
Unaffected: 0 , < 2.6.26 (semver)
Unaffected: 4.19.306 , ≤ 4.19.* (semver)
Unaffected: 5.4.268 , ≤ 5.4.* (semver)
Unaffected: 5.10.209 , ≤ 5.10.* (semver)
Unaffected: 5.15.148 , ≤ 5.15.* (semver)
Unaffected: 6.1.75 , ≤ 6.1.* (semver)
Unaffected: 6.6.14 , ≤ 6.6.* (semver)
Unaffected: 6.7.2 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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vulnerability has been resolved:\\n\\nmedia: pvrusb2: fix use after free on context disconnection\\n\\nUpon module load, a kthread is created targeting the\\npvr2_context_thread_func function, which may call pvr2_context_destroy\\nand thus call kfree() on the context object. However, that might happen\\nbefore the usb hub_event handler is able to notify the driver. This\\npatch adds a sanity check before the invalid read reported by syzbot,\\nwithin the context disconnection call stack.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.306\", \"versionStartIncluding\": \"2.6.26\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.268\", \"versionStartIncluding\": \"2.6.26\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.209\", \"versionStartIncluding\": \"2.6.26\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.148\", \"versionStartIncluding\": \"2.6.26\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.75\", \"versionStartIncluding\": \"2.6.26\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.14\", \"versionStartIncluding\": \"2.6.26\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.2\", \"versionStartIncluding\": \"2.6.26\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"2.6.26\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:36:41.651Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-52445\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:36:41.651Z\", \"dateReserved\": \"2024-02-20T12:30:33.291Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-22T16:21:37.784Z\", \"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.