CVE-2023-53827
High
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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Linux
PublishedDec 9, 2025
First seenDec 9, 2025
How to fix
Update
- Linux Linuxf2d38e77aa5f3effc143e7dd24da8acf02925958, 1351551aa9058e07a20a27a158270cf84fcde621, c02421992505c95c7f3c9ad59ee35e22eac60988, d9ba36c22a7bb09d6bac4cc2f243eff05da53f43, ac6725a634f7e8c0330610a8527f20c730b61115, 348d446762e7c70778df8bafbdf3fa0df2123f58, d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284, a2a9339e1c9deb7e1e079e12e27a0265aea8421a or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 ≤ v < f2d38e77aa5f3effc143e7dd24da8acf02925958, 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 ≤ v < 1351551aa9058e07a20a27a158270cf84fcde621, 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 ≤ v < c02421992505c95c7f3c9ad59ee35e22eac60988, 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 ≤ v < d9ba36c22a7bb09d6bac4cc2f243eff05da53f43, 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 ≤ v < ac6725a634f7e8c0330610a8527f20c730b61115, 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 ≤ v < 348d446762e7c70778df8bafbdf3fa0df2123f58, 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 ≤ v < d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284, 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 ≤ v < a2a9339e1c9deb7e1e079e12e27a0265aea8421a, 3.5 | f2d38e77aa5f3effc143e7dd24da8acf02925958, 1351551aa9058e07a20a27a158270cf84fcde621, c02421992505c95c7f3c9ad59ee35e22eac60988, d9ba36c22a7bb09d6bac4cc2f243eff05da53f43, ac6725a634f7e8c0330610a8527f20c730b61115, 348d446762e7c70778df8bafbdf3fa0df2123f58, d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284, a2a9339e1c9deb7e1e079e12e27a0265aea8421a |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.