Strix
26.1K

CVE-2026-63948

UnknownEPSS 0.21%

Last modified

CVE-2026-63948 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.21%

11.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 06acb75e7ed600d0bbf7bff5628aa8f24a97978c, < 50f1bcaaaa3a80bb1c3472044bc146e8d49d51ee; >= e97e16433eb4533083b096a3824b93a5ca3aee79, < b5c59a5b469e2a809a2d57eda4ded94235971060; >= 8960ff650aec70485b40771cd8e6e8c4cb467d33, < 8894c2010435a56ce7c6c2a8785860c13554df2f; >= 955b5b6c54d95b5e7444dfc81c95c8e013f27ac0, < 63cd225cc13d782a85e2a73c04d0d350153eada1; >= adf0398cee86643b8eacde95f17d073d022f782c, < 107c826e4ef9ec5ad8f60e6fe64d8d5325ba508f; >= adf0398cee86643b8eacde95f17d073d022f782c, < e8a5baff5be273ca07771fd2b9bb1f2a4152917b; >= adf0398cee86643b8eacde95f17d073d022f782c, < 08d81fe96f80a8e20c7acb573b6a45d901fcf2cd; >= adf0398cee86643b8eacde95f17d073d022f782c, < 9dbd84990394c51f5cee1e8871bb5ff8af5ed939; e137e2ba96e51902dc2878131823a96bf8e638ae; 6466ee65e5b27161c846c73ef407f49dfa1bd1d9; eb86f955488c39526534211f2610e48a5cf8ead4; >= 5.10.217, < 5.10.259; >= 5.15.159, < 5.15.210; >= 6.1.91, < 6.1.176; >= 6.6.31, < 6.6.143; >= 4.19.314, < 4.20; >= 5.4.276, < 5.5; >= 6.8.10, < 6.9
LinuxLinux6.9

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-63948?
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.
How severe is CVE-2026-63948?
Severity scoring for CVE-2026-63948 is pending analysis. The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-63948?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2026

View all 2026CVEs →

Are you affected by CVE-2026-63948?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST