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CVE-2023-53827

Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 4.14.313, 4.19.281, 5.4.241, 5.10.178, 5.15.108, and 2 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 · fixed in f2d38e77aa5f3effc143e7dd24da8acf02925958; From 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 · fixed in 1351551aa9058e07a20a27a158270cf84fcde621; From 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 · fixed in c02421992505c95c7f3c9ad59ee35e22eac60988; From 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 · fixed in d9ba36c22a7bb09d6bac4cc2f243eff05da53f43; From 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 · fixed in ac6725a634f7e8c0330610a8527f20c730b61115; From 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 · fixed in 348d446762e7c70778df8bafbdf3fa0df2123f58; From 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 · fixed in d82a439c3cfdb28aa7e82e2e849c5c4dd9fca284; From 61d6ef3e3408cdf7e622646fb90a9f7f9560b943 · fixed in a2a9339e1c9deb7e1e079e12e27a0265aea8421a

  • Linux Linux

    3.5

  • KernelLinux

    From 3.5.0 · fixed in 4.14.313; From 4.15.0 · fixed in 4.19.281; From 4.20.0 · fixed in 5.4.241; From 5.5.0 · fixed in 5.10.178; From 5.11.0 · fixed in 5.15.108; From 5.16.0 · fixed in 6.1.25; From 6.2.0 · fixed in 6.2.12

References 8

git.kernel.org