FKIE_CVE-2023-53827

Vulnerability from fkie_nvd - Published: 2025-12-09 16:17 - Updated: 2026-06-17 06:46
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1351551aa9058e07a20a27a158270cf84fcde621
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/348d446762e7c70778df8bafbdf3fa0df2123f58
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a2a9339e1c9deb7e1e079e12e27a0265aea8421a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ac6725a634f7e8c0330610a8527f20c730b61115
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c02421992505c95c7f3c9ad59ee35e22eac60988
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d9ba36c22a7bb09d6bac4cc2f243eff05da53f43
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f2d38e77aa5f3effc143e7dd24da8acf02925958
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "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"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "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": "2026-06-17T06:46:08.507",
  "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": "Deferred"
}


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