CVE-2023-53827

HighCVSS 8.8/10Last modified Oct 15, 2026

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

VendorProductVersions
LinuxLinux>= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < f2d38e77aa5f3effc143e7dd24da8acf02925958; >= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < 1351551aa9058e07a20a27a158270cf84fcde621; >= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < c02421992505c95c7f3c9ad59ee35e22eac60988; >= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < d9ba36c22a7bb09d6bac4cc2f243eff05da53f43; >= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < ac6725a634f7e8c0330610a8527f20c730b61115; >= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < 348d446762e7c70778df8bafbdf3fa0df2123f58; >= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284; >= 61d6ef3e3408cdf7e622646fb90a9f7f9560b943, < a2a9339e1c9deb7e1e079e12e27a0265aea8421a
LinuxLinux3.5

References

Timeline

Published
Dec 9, 2025
Last modified
Oct 15, 2026
NVD status
Deferred

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CVE-2023-53827: High severity, CVSS 8.8 | Vulnix