Not yet scoredPublished Jul 19, 2026

CVE-2026-63948Bluetooth: L2CAP: fix chan ref leak in l2cap_chan_timeout() on !conn

Updated under an hour ago (Oct 29, 2026, 2:40 AM ET)

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Exploited in the last 30 days

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.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Awaiting Analysis
Record last updated: Jul 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 06acb75e7ed600d0bbf7bff5628aa8f24a97978c before 50f1bcaaaa3a80bb1c3472044bc146e8d49d51ee; from e97e16433eb4533083b096a3824b93a5ca3aee79 before b5c59a5b469e2a809a2d57eda4ded94235971060; 8960ff650aec70485b40771cd8e6e8c4cb467d33 builds before 8894c2010435a56ce7c6c2a8785860c13554df2f; 955b5b6c54d95b5e7444dfc81c95c8e013f27ac0 builds before 63cd225cc13d782a85e2a73c04d0d350153eada1; from adf0398cee86643b8eacde95f17d073d022f782c before 107c826e4ef9ec5ad8f60e6fe64d8d5325ba508f; from adf0398cee86643b8eacde95f17d073d022f782c before e8a5baff5be273ca07771fd2b9bb1f2a4152917b; from adf0398cee86643b8eacde95f17d073d022f782c before 08d81fe96f80a8e20c7acb573b6a45d901fcf2cd; from adf0398cee86643b8eacde95f17d073d022f782c before 9dbd84990394c51f5cee1e8871bb5ff8af5ed939; and 10 more ranges	CNA record

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.