CVE-2026-63948: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: 06acb75e7ed600d0bbf7bff5628aa8f24a97978c преди 50f1bcaaaa3a80bb1c3472044bc146e8d49d51ee; e97e16433eb4533083b096a3824b93a5ca3aee79 преди b5c59a5b469e2a809a2d57eda4ded94235971060; 8960ff650aec70485b40771cd8e6e8c4cb467d33 преди 8894c2010435a56ce7c6c2a8785860c13554df2f; 955b5b6c54d95b5e7444dfc81c95c8e013f27ac0 преди 63cd225cc13d782a85e2a73c04d0d350153eada1; adf0398cee86643b8eacde95f17d073d022f782c преди 107c826e4ef9ec5ad8f60e6fe64d8d5325ba508f; adf0398cee86643b8eacde95f17d073d022f782c преди e8a5baff5be273ca07771fd2b9bb1f2a4152917b; adf0398cee86643b8eacde95f17d073d022f782c преди 08d81fe96f80a8e20c7acb573b6a45d901fcf2cd; adf0398cee86643b8eacde95f17d073d022f782c преди 9dbd84990394c51f5cee1e8871bb5ff8af5ed939; e137e2ba96e51902dc2878131823a96bf8e638ae; 6466ee65e5b27161c846c73ef407f49dfa1bd1d9; eb86f955488c39526534211f2610e48a5cf8ead4; 5.10.217 преди 5.10.259; 5.15.159 преди 5.15.210; 6.1.91 преди 6.1.176; 6.6.31 преди 6.6.143; 4.19.314 преди 4.20; 5.4.276 преди 5.5; 6.8.10 преди 6.9
• Linux Linux: 6.9; преди 6.9; 5.10.259 до 5.10.*; 5.15.210 до 5.15.*; 6.1.176 до 6.1.*; 6.6.143 до 6.6.*; 6.12.93 до 6.12.*; 6.18.35 до 6.18.*; 7.0.12 до 7.0.*; от 7.1 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-63948
• https://nvd.nist.gov/vuln/detail/CVE-2026-63948
• 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