Unrated severityNVD Advisory· Published Jul 19, 2026· Updated Jul 27, 2026
CVE-2026-63948
CVE-2026-63948
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.
Affected products
15- osv-coords14 versionspkg:linux/kernelpkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0
< 5.10.259+ 13 more
- (no CPE)range: < 5.10.259
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1.160000.2.19
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/08d81fe96f80a8e20c7acb573b6a45d901fcf2cdnvd
- git.kernel.org/stable/c/107c826e4ef9ec5ad8f60e6fe64d8d5325ba508fnvd
- git.kernel.org/stable/c/50f1bcaaaa3a80bb1c3472044bc146e8d49d51eenvd
- git.kernel.org/stable/c/63cd225cc13d782a85e2a73c04d0d350153eada1nvd
- git.kernel.org/stable/c/8894c2010435a56ce7c6c2a8785860c13554df2fnvd
- git.kernel.org/stable/c/9dbd84990394c51f5cee1e8871bb5ff8af5ed939nvd
- git.kernel.org/stable/c/b5c59a5b469e2a809a2d57eda4ded94235971060nvd
- git.kernel.org/stable/c/e8a5baff5be273ca07771fd2b9bb1f2a4152917bnvd
News mentions
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