High severity8.8NVD Advisory· Published Sep 16, 2025· Updated Aug 4, 2026
CVE-2023-53297
CVE-2023-53297
Description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp
conn->chan_lock isn't acquired before l2cap_get_chan_by_scid, if l2cap_get_chan_by_scid returns NULL, then 'bad unlock balance' is triggered.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
122- osv-coords119 versionspkg:rpm/almalinux/kernel-rt-debug-corepkg:rpm/almalinux/kernel-rt-debug-modulespkg:linux/kernelpkg:rpm/almalinux/kernel-zfcpdump-modulespkg:rpm/almalinux/kernel-rtpkg:rpm/almalinux/kernel-rt-modulespkg:rpm/almalinux/kernel-tools-libspkg:rpm/suse/kernel-livepatch-SLE15-SP4_Update_45&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP4pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-default-base&distro=SUSE%20Manager%20Proxy%20LTS%204.3pkg:rpm/suse/kernel-source&distro=SUSE%20Manager%20Server%20LTS%204.3pkg:rpm/suse/kernel-syms&distro=SUSE%20Manager%20Server%20LTS%204.3pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Manager%20Server%20LTS%204.3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Manager%20Proxy%20LTS%204.3pkg:rpm/almalinux/kernelpkg:rpm/almalinux/kernel-cross-headerspkg:rpm/almalinux/kernel-debug-modulespkg:rpm/almalinux/kernel-rt-corepkg:rpm/almalinux/kernel-rt-debug-develpkg:rpm/almalinux/kernel-rt-develpkg:rpm/almalinux/kernel-debug-develpkg:rpm/almalinux/kernel-toolspkg:rpm/almalinux/kernel-zfcpdump-corepkg:rpm/almalinux/kernel-zfcpdump-develpkg:rpm/almalinux/perfpkg:rpm/almalinux/kernel-rt-modules-extrapkg:rpm/suse/kernel-default-base&distro=SUSE%20Manager%20Server%20LTS%204.3pkg:rpm/suse/kernel-default&distro=SUSE%20Manager%20Server%20LTS%204.3pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Manager%20Proxy%20LTS%204.3pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/almalinux/bpftoolpkg:rpm/almalinux/kernel-abi-stablelistspkg:rpm/almalinux/kernel-corepkg:rpm/almalinux/kernel-debugpkg:rpm/almalinux/kernel-debug-corepkg:rpm/almalinux/kernel-debug-modules-extrapkg:rpm/almalinux/kernel-develpkg:rpm/almalinux/kernel-docpkg:rpm/almalinux/kernel-headerspkg:rpm/almalinux/kernel-modulespkg:rpm/almalinux/kernel-modules-extrapkg:rpm/almalinux/kernel-tools-libs-develpkg:rpm/almalinux/kernel-zfcpdumppkg:rpm/almalinux/kernel-zfcpdump-modules-extrapkg:rpm/almalinux/python3-perfpkg:rpm/almalinux/kernel-rt-debugpkg:rpm/almalinux/kernel-rt-debug-modules-extrapkg:rpm/suse/kernel-livepatch-SLE15-SP5_Update_31&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-source&distro=SUSE%20Manager%20Proxy%20LTS%204.3
< 4.18.0-553.81.1.rt7.422.el8_10+ 118 more
- (no CPE)range: < 4.18.0-553.81.1.rt7.422.el8_10
- (no CPE)range: < 4.18.0-553.81.1.rt7.422.el8_10
- (no CPE)range: < 4.14.316
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.rt7.422.el8_10
- (no CPE)range: < 4.18.0-553.81.1.rt7.422.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 1-150400.9.3.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.13.109.1
- (no CPE)range: < 5.14.21-150500.55.124.1.150500.6.59.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1.150500.6.59.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1.150500.6.59.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1.150500.6.59.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.rt7.422.el8_10
- (no CPE)range: < 4.18.0-553.81.1.rt7.422.el8_10
- (no CPE)range: < 4.18.0-553.81.1.rt7.422.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.rt7.422.el8_10
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.13.109.1
- (no CPE)range: < 5.14.21-150400.15.133.1
- (no CPE)range: < 5.14.21-150400.15.133.1
- (no CPE)range: < 5.14.21-150400.15.133.1
- (no CPE)range: < 5.14.21-150400.15.133.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.el8_10
- (no CPE)range: < 4.18.0-553.81.1.rt7.422.el8_10
- (no CPE)range: < 4.18.0-553.81.1.rt7.422.el8_10
- (no CPE)range: < 1-150500.11.3.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1.150500.6.59.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/116b9c002c894097adc2b8684db2d1da4229ed46nvdPatch
- git.kernel.org/stable/c/2112c4c47d36bc5aba3ddeb9afedce6ae6a67e7dnvdPatch
- git.kernel.org/stable/c/25e97f7b1866e6b8503be349eeea44bb52d661cenvdPatch
- git.kernel.org/stable/c/5134556c9be582793f30695c09d18a26fe1ff2d7nvdPatch
- git.kernel.org/stable/c/55410a9144c76ecda126e6cdec556dfcd8f343b2nvdPatch
- git.kernel.org/stable/c/5f352a56f0e607e6ff539cbf12156bfd8af232benvdPatch
- git.kernel.org/stable/c/6a27762340ad08643de3bc17fe1646ea489ca2e2nvdPatch
- git.kernel.org/stable/c/fd269a0435f8e9943b7a57c5a59688848d42d449nvdPatch
News mentions
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