CVE-2023-53827 (GCVE-0-2023-53827)

Vulnerability from cvelistv5 – Published: 2025-12-09 01:29 – Updated: 2025-12-09 01:29
VLAI?
Title
Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp} Similar to commit d0be8347c623 ("Bluetooth: L2CAP: Fix use-after-free caused by l2cap_chan_put"), just use l2cap_chan_hold_unless_zero to prevent referencing a channel that is about to be destroyed.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f2d38e77aa5f3effc143e7dd24da8acf02925958 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1351551aa9058e07a20a27a158270cf84fcde621 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c02421992505c95c7f3c9ad59ee35e22eac60988 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d9ba36c22a7bb09d6bac4cc2f243eff05da53f43 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ac6725a634f7e8c0330610a8527f20c730b61115 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 348d446762e7c70778df8bafbdf3fa0df2123f58 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a2a9339e1c9deb7e1e079e12e27a0265aea8421a (git)
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    Linux Linux Unaffected: 4.14.313 , ≤ 4.14.* (semver)
Unaffected: 4.19.281 , ≤ 4.19.* (semver)
Unaffected: 5.4.241 , ≤ 5.4.* (semver)
Unaffected: 5.10.178 , ≤ 5.10.* (semver)
Unaffected: 5.15.108 , ≤ 5.15.* (semver)
Unaffected: 6.1.25 , ≤ 6.1.* (semver)
Unaffected: 6.2.12 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "net/bluetooth/l2cap_core.c"
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      "providerMetadata": {
        "dateUpdated": "2025-12-09T01:29:40.794Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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    "dateReserved": "2025-12-09T01:27:17.825Z",
    "dateUpdated": "2025-12-09T01:29:40.794Z",
    "state": "PUBLISHED"
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  }
}


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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.



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