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Vulnerability · Published May 1, 2026 · Assigned by Linux

CVE-2026-43022Bluetooth: hci_sync: hci_cmd_sync_queue_once() return -EEXIST if exists

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 95.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: hci_cmd_sync_queue_once() return -EEXIST if exists hci_cmd_sync_queue_once() needs to indicate whether a queue item was added, so caller can know if callbacks are called, so it can avoid leaking resources. Change the function to return -EEXIST if queue item already exists. Modify all callsites to handle that.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-43022
Debian:13linux6.12.115-2DEBIAN-CVE-2026-43022
Debian:14linux6.19.12-1DEBIAN-CVE-2026-43022
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-43022
Ubuntu:25.10linuxno fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-43022
Ubuntu:25.10linux-awsno fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-43022
Ubuntu:25.10linux-azureno fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-43022
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-43022
Ubuntu:25.10linux-gcpno fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-43022
Ubuntu:26.04:LTSlinux-nvidia7.0.0-1006.6UBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1036.39UBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1036.39USN-8886-1
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-43022
Ubuntu:25.10linux-oracleno fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-43022
Ubuntu:25.10linux-raspino fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-43022
Ubuntu:25.10linux-realtimeno fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-43022
Ubuntu:25.10linux-riscvno fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-43022
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-43022
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-43022

Affected products (as reported)

VendorProductVersions
Linux Linux f00f36db76eb8fd10d13e80e2590f23b5beaa54d – before da531f7108218ab6a779861e4646562fc769c9b31499f79995c7ee58e3bfeeff75f6d1b37dcda881 – before dfee8da127bafa46530b72347bce3ccae736296d505ea2b295929e7be2b4e1bc86ee31cb7862fb01 – before 799e2e5fbf3f14874b5c6cc289a0dd68b2ca1979505ea2b295929e7be2b4e1bc86ee31cb7862fb01 – before 5cfa4f537a056c91ac6c09bc3ab58a4455217df7505ea2b295929e7be2b4e1bc86ee31cb7862fb01 – before 0ad2ce230b38cd4b3f6732cc609e270461e626e5505ea2b295929e7be2b4e1bc86ee31cb7862fb01 – before 2969554bcfccb5c609f6b6cd4a014933f3a66dd0357603f4d396d85fbf0045512efaf1d7f7394ed76.1.120 – before 6.1.191
Linux Linux 6.9

References