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Vulnerability · Published Oct 18, 2026 · Assigned by Linux

CVE-2026-98828wifi: ath9k: reject short WMI command responses

Unrated

In plain English

A 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 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 90.1% 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: ath9k: reject short WMI command responses ath9k_wmi_rsp_callback() removes the validated WMI header and copies the number of bytes expected by the waiting command into its response buffer. A device response shorter than that expectation can therefore be read beyond the skb payload. Record -EMSGSIZE for a short response, complete the waiter, and return the stored status from the command path. This also prevents callers from consuming stale response bytes as a successful reply.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-98828
Debian:13linux6.12.113-1DEBIAN-CVE-2026-98828
Debian:14linux7.2.10-1DEBIAN-CVE-2026-98828
Debian:12linux-6.126.12.113-1~deb12u1DEBIAN-CVE-2026-98828
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98828
Ubuntu:26.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98828
Ubuntu:26.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98828
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98828
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98828
Ubuntu:26.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98828
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-hwe-7.0no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98828
Ubuntu:26.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98828
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-98828
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-98828
Ubuntu:26.04:LTSlinux-oem-7.0no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98828
Ubuntu:26.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98828
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98828
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98828
Ubuntu:26.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-riscv-7.0no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-98828
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-98828
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-98828

Affected products (as reported)

VendorProductVersions
Linux Linux fb9987d0f748c983bb795a86f47522313f701a08 – before 03ef61d05aa26022327f971b790f07e6bf6e35d6fb9987d0f748c983bb795a86f47522313f701a08 – before e0c21130c1c7791ba73b19a3a9ea767c8cd43745fb9987d0f748c983bb795a86f47522313f701a08 – before a3b0137c855a61371d9cf9993b8bcc33c9798202fb9987d0f748c983bb795a86f47522313f701a08 – before 93ce8ea70451e800601bc9444aa33043de15d67b
Linux Linux 2.6.35

References