High severity8.8NVD Advisory· Published Jul 19, 2026· Updated Oct 16, 2026
CVE-2026-63975
CVE-2026-63975
Description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp
If dcid is received for an already-assigned destination CID the spec requires that both channels to be discarded, but calling l2cap_chan_del may invalidate the tmp cursor created by list_for_each_entry_safe and in fact it is the wrong procedure as the chan->dcid may be assigned previously it really needs to be disconnected.
Calling l2cap_chan_clone directly may still lead to l2cap_chan_del so instead schedule l2cap_chan_timeout with delay 0 to close the channel asynchronously.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
97cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 6 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.7,<5.10.259
- cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*
- (no CPE)
- osv-coords90 versionspkg:linux/kernelpkg:rpm/almalinux/bpftoolpkg:rpm/almalinux/kernelpkg:rpm/almalinux/kernel-64kpkg:rpm/almalinux/kernel-64k-corepkg:rpm/almalinux/kernel-64k-debugpkg:rpm/almalinux/kernel-64k-debug-corepkg:rpm/almalinux/kernel-64k-debug-develpkg:rpm/almalinux/kernel-64k-debug-devel-matchedpkg:rpm/almalinux/kernel-64k-debug-modulespkg:rpm/almalinux/kernel-64k-debug-modules-corepkg:rpm/almalinux/kernel-64k-debug-modules-extrapkg:rpm/almalinux/kernel-64k-develpkg:rpm/almalinux/kernel-64k-devel-matchedpkg:rpm/almalinux/kernel-64k-modulespkg:rpm/almalinux/kernel-64k-modules-corepkg:rpm/almalinux/kernel-64k-modules-extrapkg:rpm/almalinux/kernel-abi-stablelistspkg:rpm/almalinux/kernel-corepkg:rpm/almalinux/kernel-cross-headerspkg:rpm/almalinux/kernel-debugpkg:rpm/almalinux/kernel-debug-corepkg:rpm/almalinux/kernel-debug-develpkg:rpm/almalinux/kernel-debug-devel-matchedpkg:rpm/almalinux/kernel-debug-modulespkg:rpm/almalinux/kernel-debug-modules-corepkg:rpm/almalinux/kernel-debug-modules-extrapkg:rpm/almalinux/kernel-debug-uki-virtpkg:rpm/almalinux/kernel-develpkg:rpm/almalinux/kernel-devel-matchedpkg:rpm/almalinux/kernel-docpkg:rpm/almalinux/kernel-headerspkg:rpm/almalinux/kernel-modulespkg:rpm/almalinux/kernel-modules-corepkg:rpm/almalinux/kernel-modules-extrapkg:rpm/almalinux/kernel-modules-extra-matchedpkg:rpm/almalinux/kernel-rtpkg:rpm/almalinux/kernel-rt-64kpkg:rpm/almalinux/kernel-rt-64k-corepkg:rpm/almalinux/kernel-rt-64k-debugpkg:rpm/almalinux/kernel-rt-64k-debug-corepkg:rpm/almalinux/kernel-rt-64k-debug-develpkg:rpm/almalinux/kernel-rt-64k-debug-modulespkg:rpm/almalinux/kernel-rt-64k-debug-modules-corepkg:rpm/almalinux/kernel-rt-64k-debug-modules-extrapkg:rpm/almalinux/kernel-rt-64k-develpkg:rpm/almalinux/kernel-rt-64k-modulespkg:rpm/almalinux/kernel-rt-64k-modules-corepkg:rpm/almalinux/kernel-rt-64k-modules-extrapkg:rpm/almalinux/kernel-rt-corepkg:rpm/almalinux/kernel-rt-debugpkg:rpm/almalinux/kernel-rt-debug-corepkg:rpm/almalinux/kernel-rt-debug-develpkg:rpm/almalinux/kernel-rt-debug-modulespkg:rpm/almalinux/kernel-rt-debug-modules-corepkg:rpm/almalinux/kernel-rt-debug-modules-extrapkg:rpm/almalinux/kernel-rt-develpkg:rpm/almalinux/kernel-rt-modulespkg:rpm/almalinux/kernel-rt-modules-corepkg:rpm/almalinux/kernel-rt-modules-extrapkg:rpm/almalinux/kernel-toolspkg:rpm/almalinux/kernel-tools-libspkg:rpm/almalinux/kernel-tools-libs-develpkg:rpm/almalinux/kernel-uki-virtpkg:rpm/almalinux/kernel-uki-virt-addonspkg:rpm/almalinux/kernel-zfcpdumppkg:rpm/almalinux/kernel-zfcpdump-corepkg:rpm/almalinux/kernel-zfcpdump-develpkg:rpm/almalinux/kernel-zfcpdump-devel-matchedpkg:rpm/almalinux/kernel-zfcpdump-modulespkg:rpm/almalinux/kernel-zfcpdump-modules-corepkg:rpm/almalinux/kernel-zfcpdump-modules-extrapkg:rpm/almalinux/libperfpkg:rpm/almalinux/perfpkg:rpm/almalinux/python3-perfpkg:rpm/almalinux/rtlapkg:rpm/almalinux/rvpkg: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
>= 5.7.0, < 5.10.259+ 89 more
- (no CPE)range: >= 5.7.0, < 5.10.259
- (no CPE)range: < 4.18.0-553.166.1.el8_10
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (no CPE)range: < 6.12.0-211.53.1.el10_2
- (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/291eec1041c918c460dc9702e44edd17794b4a4bnvdPatch
- git.kernel.org/stable/c/3c8eaa91eb433c450426539290be4ffe282e9f00nvdPatch
- git.kernel.org/stable/c/41c2713b204e6cb6a94587bc6bf6935107df5479nvdPatch
- git.kernel.org/stable/c/41e29548b5e8b5e5fcf708786b3bea67cab107fanvdPatch
- git.kernel.org/stable/c/6319b38fe69f56ed95680ade485b957a53fff642nvdPatch
- git.kernel.org/stable/c/d153b8898c0051eb8b6a083b35cbe304a5886bd5nvdPatch
- git.kernel.org/stable/c/e6833e737a51db1e5ea0401322acf5e22abd8be6nvdPatch
- git.kernel.org/stable/c/ecfed1e0d8efecad6737a0d83e21d2fd021d8c48nvdPatch
News mentions
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