High severity7.8NVD Advisory· Published Aug 10, 2026· Updated Oct 19, 2026
CVE-2026-68391
CVE-2026-68391
Description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds
Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Use of hci_conn in hci_sync callbacks also needs to hold refcount to avoid UAF.
Take appropriate locks for hci_conn lookups, and take refcount for hci_conn pointers stored in mgmt_pending_cmd so that the pointer stays valid.
When accessing conn->state, ensure hdev->lock is held to avoid data race.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
90- osv-coords89 versionspkg:linux/kernelpkg: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
>= 6.0.0, < 6.1.189+ 88 more
- (no CPE)range: >= 6.0.0, < 6.1.189
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
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- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 6.12.0-211.58.1.el10_2
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
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- (no CPE)range: < 5.14.0-687.50.1.el9_8
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- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
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- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
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- (no CPE)range: < 5.14.0-687.50.1.el9_8
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- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 5.14.0-687.50.1.el9_8
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1.160000.2.22
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
Patches
Vulnerability mechanics
References
6- git.kernel.org/stable/c/84674dd1d3192ecb050827d3148642609c0c9dbbnvd
- git.kernel.org/stable/c/b56f2ecafc08f372bf0529f9c4f3f429cb1702dcnvd
- git.kernel.org/stable/c/d5b3b484b62bb0f4542e7622789d28871626cdf0nvd
- git.kernel.org/stable/c/da55f570191d5d72f10c607a7043b947eb05ea46nvd
- git.kernel.org/stable/c/ecdcb55ea1c01dda074406f38058785a69526734nvd
- git.kernel.org/stable/c/f915e74b6f18293d1d69a2a3305ef321ff7c0172nvd
News mentions
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