Log in Start free

Vulnerability · Published Sep 24, 2026 · Assigned by Linux

CVE-2026-93806wifi: cfg80211: validate assoc response length before status and IE access

High 8.8

In plain English

A high-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 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.3%top 83.0% 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: wifi: cfg80211: validate assoc response length before status and IE access cfg80211_rx_assoc_resp() initialises the status and response-IE fields of cfg80211_connect_resp_params from the management frame before proving that the frame is long enough for those offsets. S1G and regular association responses also have different IE offsets, but the S1G path only patched resp_ie after the unsafe initialiser had already run. Defer resp_ie, resp_ie_len, and status to after the link-iteration loop. Use a bool to remember whether the frame is S1G, then validate the appropriate minimum length and set all three fields in a single if/else block. Funnel short-frame and SME-reject cleanup through a shared free_bss label for the abandon paths.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.190-1DEBIAN-CVE-2026-93806
Debian:13linux6.12.111-1DEBIAN-CVE-2026-93806
Debian:14linux7.2.6-1DEBIAN-CVE-2026-93806
Debian:12linux-6.126.12.111-1~deb12u1DEBIAN-CVE-2026-93806
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-93806
Ubuntu:26.04:LTSlinux7.0.0-42.42UBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-93806
Ubuntu:26.04:LTSlinux-aws7.0.0-1016.17UBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-93806
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-93806
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-93806
Ubuntu:26.04:LTSlinux-gcp7.0.0-1016.18UBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-93806
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-42.42~24.04.1UBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-93806
Ubuntu:26.04:LTSlinux-ibm7.0.0-1017.17UBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-93806
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-93806
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-93806
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1017.17UBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-93806
Ubuntu:26.04:LTSlinux-oracle7.0.0-1015.16UBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-93806
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-93806
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-93806
Ubuntu:26.04:LTSlinux-riscv7.0.0-42.42.1UBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-42.42.1~24.04.1UBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-93806
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-93806
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-93806

Affected products (as reported)

VendorProductVersions
Linux Linux 6829c878ecd24ff0ae41b4668c7e9d0f11b66942 – before 3bcaaaa4ad334053ceea2ea2f0623f22afe2e1ac6829c878ecd24ff0ae41b4668c7e9d0f11b66942 – before 71be658246c903b9e96976a23c23800675896a1b6829c878ecd24ff0ae41b4668c7e9d0f11b66942 – before a57310600c1e2b9ada0f37c96e8f48aef47d30936829c878ecd24ff0ae41b4668c7e9d0f11b66942 – before 78ac450ad4624d6b2999cb4eeb28916767f812476829c878ecd24ff0ae41b4668c7e9d0f11b66942 – before b760113aeca2e9362d56bf9e9263373ffe6c8eb3
Linux Linux 2.6.32

References