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OpenAdvisories
Medium · 5.5 CVE-2022-49139 EUVD-2022-55084

Bluetooth: fix null ptr deref on hci_sync_conn_complete_evt

Published Feb 26, 2025 · Updated May 11, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.4 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lts-xenial Package: linux-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-tegra-5.15 Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.5 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: fix null ptr deref on hci_sync_conn_complete_evt

This event is just specified for SCO and eSCO link types.
On the reception of a HCI_Synchronous_Connection_Complete for a BDADDR
of an existing LE connection, LE link type and a status that triggers the
second case of the packet processing a NULL pointer dereference happens,
as conn->link is NULL.

Affected products

VendorProductAffectedFixed
Linux Linux 2.6.30 5.4.231

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 linux 5.17.3-1 —
Debian 13 linux 5.17.3-1 —
Debian 12 linux 5.17.3-1 —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1015.17 —
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux +1 5.15.0-70.77 —
Ubuntu 22.04 LTS linux-aws 5.15.0-1034.38 —
Ubuntu 22.04 LTS linux-azure 5.15.0-1036.43 —
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1036.43.1 —
Ubuntu 22.04 LTS linux-gcp 5.15.0-1032.40 —
Ubuntu 22.04 LTS linux-gke +1 5.15.0-1031.36 —
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1018.23 —
Ubuntu 22.04 LTS linux-ibm 5.15.0-1028.31 —
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1028.33 —
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1023.23 —
Ubuntu 22.04 LTS linux-oracle 5.15.0-1033.39 —
Ubuntu 22.04 LTS linux-raspi 5.15.0-1027.29 —
Ubuntu 22.04 LTS linux-riscv +31 No fix yet —
Ubuntu 20.04 LTS linux 5.4.0-147.164 —
Ubuntu 20.04 LTS linux-aws 5.4.0-1100.108 —
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1034.38~20.04.1 —
Ubuntu 20.04 LTS linux-azure 5.4.0-1106.112 —
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1036.43~20.04.1 —
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1062.68 —
Ubuntu 20.04 LTS linux-gcp 5.4.0-1103.112 —
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1032.40~20.04.1 —
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 20.04 LTS linux-hwe-5.15 +1 5.15.0-70.77~20.04.1 —
Ubuntu 20.04 LTS linux-ibm 5.4.0-1047.52 —
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1030.35~20.04.1 —
Ubuntu 20.04 LTS linux-iot 5.4.0-1017.18 —
Ubuntu 20.04 LTS linux-kvm 5.4.0-1089.95 —
Ubuntu 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1014.14~20.04.1 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1099.108 —
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1033.39~20.04.1 —
Ubuntu 20.04 LTS linux-raspi 5.4.0-1083.94 —
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1031.35~20.04.1 —
Ubuntu 20.04 LTS linux-xilinx-zynqmp 5.4.0-1024.28 —
Ubuntu 18.04 LTS linux-aws-5.4 5.4.0-1100.108~18.04.1 —
Ubuntu 18.04 LTS linux-azure-5.4 5.4.0-1106.112~18.04.1 —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 18.04 LTS linux-gcp-5.4 5.4.0-1103.112~18.04.1 —
Ubuntu 18.04 LTS linux-hwe-5.4 5.4.0-147.164~18.04.1 —
Ubuntu 18.04 LTS linux-ibm-5.4 5.4.0-1047.52~18.04.1 —
Ubuntu 18.04 LTS linux-oracle-5.4 5.4.0-1099.108~18.04.1 —
Ubuntu 18.04 LTS linux-raspi-5.4 5.4.0-1083.94~18.04.1 —
Show 11 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1024.29 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1036.39 —
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1100.108+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1106.112+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1075.84 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1103.112+fips1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips No fix yet —
Ubuntu Pro 18.04 LTS linux +5 No fix yet —
Ubuntu Pro 16.04 LTS linux +7 No fix yet —
Ubuntu Pro 14.04 LTS linux +3 No fix yet —

SUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.100.1 SUSE-SU-2025:1241-1, SUSE-SU-2025:01620-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.100.1.150500.6.47.1 SUSE-SU-2025:1241-1, SUSE-SU-2025:01620-1
SLES 15 SP4 kernel-64kb +6 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SLES 15 SP4 kernel-default-base 5.14.21-150400.24.167.1.150400.24.84.1 SUSE-SU-2025:02262-1
SLES 15 SP3 kernel-64kb +7 5.3.18-150300.59.207.1 SUSE-SU-2025:01982-1
SLES 15 SP3 kernel-default-base 5.3.18-150300.59.207.1.150300.18.124.1 SUSE-SU-2025:01982-1
SLES 12 SP5 kernel-syms +2 4.12.14-122.261.1 SUSE-SU-2025:01983-1
Show 18 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 15 SP5 kernel-default-base 5.14.21-150500.55.100.1.150500.6.47.1 SUSE-SU-2025:1241-1, SUSE-SU-2025:01620-1
SLES for SAP 15 SP5 kernel-docs +4 5.14.21-150500.55.100.1 SUSE-SU-2025:1241-1, SUSE-SU-2025:01620-1
SLES for SAP 15 SP4 kernel-default-base 5.14.21-150400.24.167.1.150400.24.84.1 SUSE-SU-2025:02262-1
SLES for SAP 15 SP4 kernel-docs +4 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SLES for SAP 15 SP3 kernel-default-base 5.3.18-150300.59.207.1.150300.18.124.1 SUSE-SU-2025:01982-1
SLES for SAP 15 SP3 kernel-docs +5 5.3.18-150300.59.207.1 SUSE-SU-2025:01982-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.100.1.150500.6.47.1 SUSE-SU-2025:1241-1, SUSE-SU-2025:01620-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.91.1 SUSE-SU-2025:1176-1, SUSE-SU-2025:01640-1
SLE Micro 5.5 kernel-source +1 5.14.21-150500.55.100.1 SUSE-SU-2025:1241-1, SUSE-SU-2025:01620-1
SLE Micro 5.4 kernel-default 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SLE Micro 5.4 kernel-default-base 5.14.21-150400.24.167.1.150400.24.84.1 SUSE-SU-2025:02262-1
SLE Micro 5.4 kernel-rt +1 5.14.21-150400.15.121.1 SUSE-SU-2025:01918-1
SLE Micro 5.3 kernel-default 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SLE Micro 5.3 kernel-default-base 5.14.21-150400.24.167.1.150400.24.84.1 SUSE-SU-2025:02262-1
SLE Micro 5.3 kernel-rt +1 5.14.21-150400.15.121.1 SUSE-SU-2025:01918-1
SLE Micro 5.2 kernel-default 5.3.18-150300.59.207.1 SUSE-SU-2025:01982-1
SLE Micro 5.2 kernel-default-base 5.3.18-150300.59.207.1.150300.18.124.1 SUSE-SU-2025:01982-1
SLE Micro 5.2 kernel-rt +1 5.3.18-150300.211.1 SUSE-SU-2025:01995-1
SLE Micro 5.1 kernel-default 5.3.18-150300.59.207.1 SUSE-SU-2025:01982-1
SLE Micro 5.1 kernel-default-base 5.3.18-150300.59.207.1.150300.18.124.1 SUSE-SU-2025:01982-1
SLE Micro 5.1 kernel-rt +1 5.3.18-150300.211.1 SUSE-SU-2025:01995-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.100.1 SUSE-SU-2025:1241-1, SUSE-SU-2025:01620-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_25 +1 1-150500.11.3.1 SUSE-SU-2025:1241-1, SUSE-SU-2025:01620-1
SLE Live Patching 15 SP4 kernel-default 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SLE Live Patching 15 SP4 kernel-livepatch-SLE15-SP4_Update_41 1-150400.9.3.1 SUSE-SU-2025:02262-1
SLE Live Patching 15 SP3 kernel-default 5.3.18-150300.59.207.1 SUSE-SU-2025:01982-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_58 1-150300.7.3.1 SUSE-SU-2025:01982-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.261.1 SUSE-SU-2025:01983-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_69 1-8.3.1 SUSE-SU-2025:01983-1
SLE HPC 15 SP5 kernel-64kb +5 5.14.21-150500.55.100.1 SUSE-SU-2025:1241-1, SUSE-SU-2025:01620-1
SLE HPC 15 SP5 kernel-default-base 5.14.21-150500.55.100.1.150500.6.47.1 SUSE-SU-2025:1241-1, SUSE-SU-2025:01620-1
SLE HPC 15 SP4 kernel-64kb +5 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SLE HPC 15 SP4 kernel-default-base 5.14.21-150400.24.167.1.150400.24.84.1 SUSE-SU-2025:02262-1
SLE HPC 15 SP3 kernel-64kb +6 5.3.18-150300.59.207.1 SUSE-SU-2025:01982-1
SLE HPC 15 SP3 kernel-default-base 5.3.18-150300.59.207.1.150300.18.124.1 SUSE-SU-2025:01982-1
SUSE Manager Server 4.3 kernel-default-base 5.14.21-150400.24.167.1.150400.24.84.1 SUSE-SU-2025:02262-1
SUSE Manager Server 4.3 kernel-syms +3 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SUSE Manager Proxy 4.3 kernel-default-base 5.14.21-150400.24.167.1.150400.24.84.1 SUSE-SU-2025:02262-1
SUSE Manager Proxy 4.3 kernel-syms +2 5.14.21-150400.24.167.1 SUSE-SU-2025:02262-1
SUSE Enterprise Storage 7.1 kernel-64kb +6 5.3.18-150300.59.207.1 SUSE-SU-2025:01982-1
SUSE Enterprise Storage 7.1 kernel-default-base 5.3.18-150300.59.207.1.150300.18.124.1 SUSE-SU-2025:01982-1

Advisories 9

References