CVE-2023-53827

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.

CVSS 3.1

8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.4% chance of exploitation in the next 30 days; higher than 32% of CVEs (scores of 2026-10-25)

Published

2025-12-09

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

References

• https://git.kernel.org/stable/c/1351551aa9058e07a20a27a158270cf84fcde621
• https://git.kernel.org/stable/c/348d446762e7c70778df8bafbdf3fa0df2123f58
• https://git.kernel.org/stable/c/a2a9339e1c9deb7e1e079e12e27a0265aea8421a
• https://git.kernel.org/stable/c/ac6725a634f7e8c0330610a8527f20c730b61115
• https://git.kernel.org/stable/c/c02421992505c95c7f3c9ad59ee35e22eac60988

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