CVE-2026-63948
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 06acb75e7ed600d0bbf7bff5628aa8f24a97978c < 50f1bcaaaa3a80bb1c3472044bc146e8d49d51ee | affected |
| Linux | Linux | e97e16433eb4533083b096a3824b93a5ca3aee79 < b5c59a5b469e2a809a2d57eda4ded94235971060 | affected |
| Linux | Linux | 8960ff650aec70485b40771cd8e6e8c4cb467d33 < 8894c2010435a56ce7c6c2a8785860c13554df2f | affected |
| Linux | Linux | 955b5b6c54d95b5e7444dfc81c95c8e013f27ac0 < 63cd225cc13d782a85e2a73c04d0d350153eada1 | affected |
| Linux | Linux | adf0398cee86643b8eacde95f17d073d022f782c < 107c826e4ef9ec5ad8f60e6fe64d8d5325ba508f | affected |
| Linux | Linux | adf0398cee86643b8eacde95f17d073d022f782c < e8a5baff5be273ca07771fd2b9bb1f2a4152917b | affected |
| Linux | Linux | adf0398cee86643b8eacde95f17d073d022f782c < 08d81fe96f80a8e20c7acb573b6a45d901fcf2cd | affected |
| Linux | Linux | adf0398cee86643b8eacde95f17d073d022f782c < 9dbd84990394c51f5cee1e8871bb5ff8af5ed939 | affected |
| Linux | Linux | e137e2ba96e51902dc2878131823a96bf8e638ae | affected |
| Linux | Linux | 6466ee65e5b27161c846c73ef407f49dfa1bd1d9 | affected |
| Linux | Linux | eb86f955488c39526534211f2610e48a5cf8ead4 | affected |
| Linux | Linux | 5.10.217 < 5.10.259 | affected |
| Linux | Linux | 5.15.159 < 5.15.210 | affected |
| Linux | Linux | 6.1.91 < 6.1.176 | affected |
| Linux | Linux | 6.6.31 < 6.6.143 | affected |
| Linux | Linux | 4.19.314 < 4.20 | affected |
| Linux | Linux | 5.4.276 < 5.5 | affected |
| Linux | Linux | 6.8.10 < 6.9 | affected |
| Linux | Linux | 6.9 | affected |
| Linux | Linux | 0 < 6.9 | unaffected |
| Linux | Linux | 5.10.259 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.210 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.176 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.143 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.93 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.35 <= 6.18.* | unaffected |
| Linux | Linux | 7.0.12 <= 7.0.* | unaffected |
| Linux | Linux | 7.1 <= * | unaffected |
Weaknesses
References
- 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
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.