CVE-2026-63948
Description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: fix chan ref leak in l2cap_chan_timeout() on !conn
__set_chan_timer() takes a l2cap_chan reference via l2cap_chan_hold()
before scheduling the delayed work. The normal path in
l2cap_chan_timeout() drops this reference with l2cap_chan_put() at the
end, but the early return when chan->conn is NULL skips the put,
leaking the reference.
Add the missing l2cap_chan_put() before the early return.
Metadata
Severity & Metrics
No CVSS data available.
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Linux | Linux | — | 06acb75e7ed600d0bbf7bff5628aa8f24a97978c < 50f1bcaaaa3a80bb1c3472044bc146e8d49d51ee, e97e16433eb4533083b096a3824b93a5ca3aee79 < b5c59a5b469e2a809a2d57eda4ded94235971060, 8960ff650aec70485b40771cd8e6e8c4cb467d33 < 8894c2010435a56ce7c6c2a8785860c13554df2f, 955b5b6c54d95b5e7444dfc81c95c8e013f27ac0 < 63cd225cc13d782a85e2a73c04d0d350153eada1 … |
| Linux | Linux | — | 6.9, 0 < 6.9, 5.10.259 ≤ 5.10.*, 5.15.210 ≤ 5.15.* … |
References (8)
- https://git.kernel.org/stable/c/50f1bcaaaa3a80bb1c3472044bc146e8d49d51ee
- https://git.kernel.org/stable/c/b5c59a5b469e2a809a2d57eda4ded94235971060
- https://git.kernel.org/stable/c/8894c2010435a56ce7c6c2a8785860c13554df2f
- https://git.kernel.org/stable/c/63cd225cc13d782a85e2a73c04d0d350153eada1
- https://git.kernel.org/stable/c/107c826e4ef9ec5ad8f60e6fe64d8d5325ba508f
- https://git.kernel.org/stable/c/e8a5baff5be273ca07771fd2b9bb1f2a4152917b
- https://git.kernel.org/stable/c/08d81fe96f80a8e20c7acb573b6a45d901fcf2cd
- https://git.kernel.org/stable/c/9dbd84990394c51f5cee1e8871bb5ff8af5ed939