Vulnerability-Lookup

FKIE_CVE-2023-53827

Vulnerability from fkie_nvd - Published: 2025-12-09 16:17 - Updated: 2025-12-09 18:37

Severity ?

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.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1351551aa9058e07a20a27a158270cf84fcde621
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/348d446762e7c70778df8bafbdf3fa0df2123f58
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a2a9339e1c9deb7e1e079e12e27a0265aea8421a
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ac6725a634f7e8c0330610a8527f20c730b61115
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c02421992505c95c7f3c9ad59ee35e22eac60988
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d9ba36c22a7bb09d6bac4cc2f243eff05da53f43
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f2d38e77aa5f3effc143e7dd24da8acf02925958

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}\n\nSimilar to commit d0be8347c623 (\"Bluetooth: L2CAP: Fix use-after-free\ncaused by l2cap_chan_put\"), just use l2cap_chan_hold_unless_zero to\nprevent referencing a channel that is about to be destroyed."
    }
  ],
  "id": "CVE-2023-53827",
  "lastModified": "2025-12-09T18:37:13.640",
  "metrics": {},
  "published": "2025-12-09T16:17:21.570",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1351551aa9058e07a20a27a158270cf84fcde621"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/348d446762e7c70778df8bafbdf3fa0df2123f58"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a2a9339e1c9deb7e1e079e12e27a0265aea8421a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ac6725a634f7e8c0330610a8527f20c730b61115"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c02421992505c95c7f3c9ad59ee35e22eac60988"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d9ba36c22a7bb09d6bac4cc2f243eff05da53f43"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f2d38e77aa5f3effc143e7dd24da8acf02925958"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

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

Vulnerability from cvelistv5 – Published: 2025-12-09 01:29 – Updated: 2026-01-05 10:33

Title

Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/f2d38e77aa5f3effc…
	https://git.kernel.org/stable/c/1351551aa9058e07a…
	https://git.kernel.org/stable/c/c02421992505c95c7…
	https://git.kernel.org/stable/c/d9ba36c22a7bb09d6…
	https://git.kernel.org/stable/c/ac6725a634f7e8c03…
	https://git.kernel.org/stable/c/348d446762e7c7077…
	https://git.kernel.org/stable/c/d82a439c3cfdb28aa…
	https://git.kernel.org/stable/c/a2a9339e1c9deb7e1…

Impacted products

Vendor

Product

Version

Linux

Affected: 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 , < f2d38e77aa5f3effc143e7dd24da8acf02925958 (git)
Affected: 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 , < 1351551aa9058e07a20a27a158270cf84fcde621 (git)
Affected: 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 , < c02421992505c95c7f3c9ad59ee35e22eac60988 (git)
Affected: 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 , < d9ba36c22a7bb09d6bac4cc2f243eff05da53f43 (git)
Affected: 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 , < ac6725a634f7e8c0330610a8527f20c730b61115 (git)
Affected: 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 , < 348d446762e7c70778df8bafbdf3fa0df2123f58 (git)
Affected: 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 , < d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284 (git)
Affected: 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 , < a2a9339e1c9deb7e1e079e12e27a0265aea8421a (git)

Linux

Affected: 3.5
Unaffected: 0 , < 3.5 (semver)
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)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/l2cap_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f2d38e77aa5f3effc143e7dd24da8acf02925958",
              "status": "affected",
              "version": "61d6ef3e3408cdf7e622646fb90a9f7f9560b943",
              "versionType": "git"
            },
            {
              "lessThan": "1351551aa9058e07a20a27a158270cf84fcde621",
              "status": "affected",
              "version": "61d6ef3e3408cdf7e622646fb90a9f7f9560b943",
              "versionType": "git"
            },
            {
              "lessThan": "c02421992505c95c7f3c9ad59ee35e22eac60988",
              "status": "affected",
              "version": "61d6ef3e3408cdf7e622646fb90a9f7f9560b943",
              "versionType": "git"
            },
            {
              "lessThan": "d9ba36c22a7bb09d6bac4cc2f243eff05da53f43",
              "status": "affected",
              "version": "61d6ef3e3408cdf7e622646fb90a9f7f9560b943",
              "versionType": "git"
            },
            {
              "lessThan": "ac6725a634f7e8c0330610a8527f20c730b61115",
              "status": "affected",
              "version": "61d6ef3e3408cdf7e622646fb90a9f7f9560b943",
              "versionType": "git"
            },
            {
              "lessThan": "348d446762e7c70778df8bafbdf3fa0df2123f58",
              "status": "affected",
              "version": "61d6ef3e3408cdf7e622646fb90a9f7f9560b943",
              "versionType": "git"
            },
            {
              "lessThan": "d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284",
              "status": "affected",
              "version": "61d6ef3e3408cdf7e622646fb90a9f7f9560b943",
              "versionType": "git"
            },
            {
              "lessThan": "a2a9339e1c9deb7e1e079e12e27a0265aea8421a",
              "status": "affected",
              "version": "61d6ef3e3408cdf7e622646fb90a9f7f9560b943",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/l2cap_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.5"
            },
            {
              "lessThan": "3.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.313",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.281",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.241",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.108",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.25",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.313",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.281",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.241",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.178",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.108",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.25",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2.12",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}\n\nSimilar to commit d0be8347c623 (\"Bluetooth: L2CAP: Fix use-after-free\ncaused by l2cap_chan_put\"), just use l2cap_chan_hold_unless_zero to\nprevent referencing a channel that is about to be destroyed."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-05T10:33:00.193Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f2d38e77aa5f3effc143e7dd24da8acf02925958"
        },
        {
          "url": "https://git.kernel.org/stable/c/1351551aa9058e07a20a27a158270cf84fcde621"
        },
        {
          "url": "https://git.kernel.org/stable/c/c02421992505c95c7f3c9ad59ee35e22eac60988"
        },
        {
          "url": "https://git.kernel.org/stable/c/d9ba36c22a7bb09d6bac4cc2f243eff05da53f43"
        },
        {
          "url": "https://git.kernel.org/stable/c/ac6725a634f7e8c0330610a8527f20c730b61115"
        },
        {
          "url": "https://git.kernel.org/stable/c/348d446762e7c70778df8bafbdf3fa0df2123f58"
        },
        {
          "url": "https://git.kernel.org/stable/c/d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284"
        },
        {
          "url": "https://git.kernel.org/stable/c/a2a9339e1c9deb7e1e079e12e27a0265aea8421a"
        }
      ],
      "title": "Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53827",
    "datePublished": "2025-12-09T01:29:40.794Z",
    "dateReserved": "2025-12-09T01:27:17.825Z",
    "dateUpdated": "2026-01-05T10:33:00.193Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

FKIE_CVE-2023-53827

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

Tags

Sightings

Nomenclature