CVE-2026-63948

CVE CVE-2026-63948EUVD EUVD-2026-45721Published 2026-07-19T14:55:41.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux adf0398cee86643b8eacde95f17d073d022f782c <9dbd84990394c51f5cee1e8871bb5ff8af5ed939; patch: 6.1.176; 6.8.10 <6.9; 06acb75e7ed600d0bbf7bff5628aa8f24a97978c <50f1bcaaaa3a80bb1c3472044bc146e8d49d51ee; patch: 0; patch: 6.18.35; 6.1.91 <6.1.176; patch: 6.6.143; eb86f955488c39526534211f2610e48a5cf8ead4; 955b5b6c54d95b5e7444dfc81c95c8e013f27ac0 <63cd225cc13d782a85e2a73c04d0d350153eada1; patch: 7.1; 6466ee65e5b27161c846c73ef407f49dfa1bd1d9; e137e2ba96e51902dc2878131823a96bf8e638ae; e97e16433eb4533083b096a3824b93a5ca3aee79 <b5c59a5b469e2a809a2d57eda4ded94235971060; 6.6.31 <6.6.143; 6.9; patch: 7.0.12; 5.15.159 <5.15.210; 5.4.276 <5.5; patch: 5.10.259; patch: 5.15.210; adf0398cee86643b8eacde95f17d073d022f782c <107c826e4ef9ec5ad8f60e6fe64d8d5325ba508f; 8960ff650aec70485b40771cd8e6e8c4cb467d33 <8894c2010435a56ce7c6c2a8785860c13554df2f; 5.10.217 <5.10.259; 4.19.314 <4.20; adf0398cee86643b8eacde95f17d073d022f782c <e8a5baff5be273ca07771fd2b9bb1f2a4152917b; patch: 6.12.93; adf0398cee86643b8eacde95f17d073d022f782c <08d81fe96f80a8e20c7acb573b6a45d901fcf2cd

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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