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.

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00036.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
61d6ef3e3408cdf7e622646fb90a9f7f9560b943 affected < f2d38e77aa5f3effc143e7dd24da8acf02925958
61d6ef3e3408cdf7e622646fb90a9f7f9560b943 affected < 1351551aa9058e07a20a27a158270cf84fcde621
61d6ef3e3408cdf7e622646fb90a9f7f9560b943 affected < c02421992505c95c7f3c9ad59ee35e22eac60988
61d6ef3e3408cdf7e622646fb90a9f7f9560b943 affected < d9ba36c22a7bb09d6bac4cc2f243eff05da53f43
61d6ef3e3408cdf7e622646fb90a9f7f9560b943 affected < ac6725a634f7e8c0330610a8527f20c730b61115
61d6ef3e3408cdf7e622646fb90a9f7f9560b943 affected < 348d446762e7c70778df8bafbdf3fa0df2123f58
61d6ef3e3408cdf7e622646fb90a9f7f9560b943 affected < d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284
61d6ef3e3408cdf7e622646fb90a9f7f9560b943 affected < a2a9339e1c9deb7e1e079e12e27a0265aea8421a
Linux Linux affected
Version Status Constraints
3.5 affected —
0 unaffected < 3.5
4.14.313 unaffected ≤ 4.14.*
4.19.281 unaffected ≤ 4.19.*
5.4.241 unaffected ≤ 5.4.*
5.10.178 unaffected ≤ 5.10.*
5.15.108 unaffected ≤ 5.15.*
6.1.25 unaffected ≤ 6.1.*
6.2.12 unaffected ≤ 6.2.*
6.3 unaffected ≤ *

No data.

No data.

No data.

Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/1351551aa9058e07a20a27a158270cf84fcde621 cve-icon cve-icon
https://git.kernel.org/stable/c/348d446762e7c70778df8bafbdf3fa0df2123f58 cve-icon cve-icon
https://git.kernel.org/stable/c/a2a9339e1c9deb7e1e079e12e27a0265aea8421a cve-icon cve-icon
https://git.kernel.org/stable/c/ac6725a634f7e8c0330610a8527f20c730b61115 cve-icon cve-icon
https://git.kernel.org/stable/c/c02421992505c95c7f3c9ad59ee35e22eac60988 cve-icon cve-icon
https://git.kernel.org/stable/c/d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284 cve-icon cve-icon
https://git.kernel.org/stable/c/d9ba36c22a7bb09d6bac4cc2f243eff05da53f43 cve-icon cve-icon
https://git.kernel.org/stable/c/f2d38e77aa5f3effc143e7dd24da8acf02925958 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025120952-CVE-2023-53827-b045@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-53827 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-53827 cve-icon
History

Wed, 10 Dec 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Important

Tue, 09 Dec 2025 02:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-01-05T10:33:00.193Z

Reserved: 2025-12-09T01:27:17.825Z

Link: CVE-2023-53827

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-09T16:17:21.570

Modified: 2025-12-09T18:37:13.640

Link: CVE-2023-53827

cve-icon Redhat

Severity : Important

Publid Date: 2025-12-09T00:00:00Z

Links: CVE-2023-53827 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.