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kernel: Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp

🗓️ 17 Dec 2025 07:48:31Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 11 Views

Bluetooth L2CAP fix: acquire chan_lock before l2cap_get_chan_by_scid to avoid bad unlock balance.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
nessus
Tenable Nessus		AlmaLinux 8 : kernel (ALSA-2025:19102)
28 Oct 202500:00
–nessus
nessus
Tenable Nessus		AlmaLinux 8 : kernel-rt (ALSA-2025:19103)
28 Oct 202500:00
–nessus
nessus
Tenable Nessus		CentOS Linux 7.9 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-whitelists / etc Multiple Vulnerabilities (ciqsa-2026_0653)
1 Oct 202600:00
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nessus
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nessus
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–nessus
nessus
Tenable Nessus		Rocky Linux 8.6 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (ciqsa-2026_0589)
1 Oct 202600:00
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nessus
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1 Oct 202600:00
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nessus
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nessus
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1 Oct 202600:00
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nessus
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1 Oct 202600:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.2x86_64bpftool4.18.0-193.178.1.el8_2bpftool-4.18.0-193.178.1.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64bpftool-debuginfo4.18.0-193.178.1.el8_2bpftool-debuginfo-4.18.0-193.178.1.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64kernel4.18.0-193.178.1.el8_2kernel-4.18.0-193.178.1.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2noarchkernel-abi-whitelists4.18.0-193.178.1.el8_2kernel-abi-whitelists-4.18.0-193.178.1.el8_2.noarch.rpm
Red Hat Enterprise Linux8.2x86_64kernel-core4.18.0-193.178.1.el8_2kernel-core-4.18.0-193.178.1.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64kernel-debug4.18.0-193.178.1.el8_2kernel-debug-4.18.0-193.178.1.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64kernel-debug-core4.18.0-193.178.1.el8_2kernel-debug-core-4.18.0-193.178.1.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64kernel-debug-debuginfo4.18.0-193.178.1.el8_2kernel-debug-debuginfo-4.18.0-193.178.1.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64kernel-debug-devel4.18.0-193.178.1.el8_2kernel-debug-devel-4.18.0-193.178.1.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64kernel-debug-modules4.18.0-193.178.1.el8_2kernel-debug-modules-4.18.0-193.178.1.el8_2.x86_64.rpm
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02 Oct 2026 01:17Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.15.5 - 8.8
EPSS0.00215
SSVC
CWE-832
bluetoothl2capdisconnect responseunlock balancechannel lockchannel id
11