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

🗓️ 25 Nov 2025 16:42:52Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 11 Views

Bluetooth L2CAP fix to prevent bad unlock balance by acquiring chan_lock before get_chan_by_scid.

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
–nessus
nessus
Tenable Nessus		Rocky Linux 8.10 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (ciqsa-2026_0601)
1 Oct 202600:00
–nessus
nessus
Tenable Nessus		Rocky Linux 8.6 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (ciqsa-2026_0011)
1 Oct 202600:00
–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
–nessus
nessus
Tenable Nessus		Rocky Linux 8 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (ciqsa-2026_0636)
1 Oct 202600:00
–nessus
nessus
Tenable Nessus		Rocky Linux 8 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (crlsa-2025_19102)
1 Oct 202600:00
–nessus
nessus
Tenable Nessus		Rocky Linux 8 [CIQ] Security Update: kernel-rt / kernel-rt-core / kernel-rt-debug / kernel-rt-debug-core / etc Multiple Vulnerabilities (crlsa-2025_19103)
1 Oct 202600:00
–nessus
nessus
Tenable Nessus		Rocky Linux 9.2 [CIQ] Security Update: bpftool / kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc Multiple Vulnerabilities (ciqsa-2026_0393)
1 Oct 202600:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.0x86_64kernel-rt5.14.0-70.155.1.rt21.227.el9_0kernel-rt-5.14.0-70.155.1.rt21.227.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-core5.14.0-70.155.1.rt21.227.el9_0kernel-rt-core-5.14.0-70.155.1.rt21.227.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug5.14.0-70.155.1.rt21.227.el9_0kernel-rt-debug-5.14.0-70.155.1.rt21.227.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-core5.14.0-70.155.1.rt21.227.el9_0kernel-rt-debug-core-5.14.0-70.155.1.rt21.227.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-debuginfo5.14.0-70.155.1.rt21.227.el9_0kernel-rt-debug-debuginfo-5.14.0-70.155.1.rt21.227.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-devel5.14.0-70.155.1.rt21.227.el9_0kernel-rt-debug-devel-5.14.0-70.155.1.rt21.227.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-kvm5.14.0-70.155.1.rt21.227.el9_0kernel-rt-debug-kvm-5.14.0-70.155.1.rt21.227.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-modules5.14.0-70.155.1.rt21.227.el9_0kernel-rt-debug-modules-5.14.0-70.155.1.rt21.227.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-modules-extra5.14.0-70.155.1.rt21.227.el9_0kernel-rt-debug-modules-extra-5.14.0-70.155.1.rt21.227.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debuginfo5.14.0-70.155.1.rt21.227.el9_0kernel-rt-debuginfo-5.14.0-70.155.1.rt21.227.el9_0.x86_64.rpm
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19 Aug 2026 21:05Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.15.5 - 8.8
EPSS0.0022
SSVC
CWE-832
bluetoothunlock balancechannel lockdisconnect responsesecurity fix
11