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Vulnerability · Published Oct 18, 2026 · Assigned by Linux

CVE-2026-98830wifi: wfx: validate MIB read length before copying to caller

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 11% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 89.4% 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: wfx: validate MIB read length before copying to caller wfx_hif_read_mib() copies reply->length bytes from the firmware response into the caller-provided buffer without checking that reply->length does not exceed val_len. A firmware response with a length field larger than expected overruns the caller buffer and reads past the end of the reply allocation. Replace the dead -ENOMEM check with an active validation that reply->length fits within val_len before the memcpy.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-98830
Debian:13linux6.12.113-1DEBIAN-CVE-2026-98830
Debian:14linux7.2.10-1DEBIAN-CVE-2026-98830
Debian:12linux-6.126.12.113-1~deb12u1DEBIAN-CVE-2026-98830
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98830
Ubuntu:26.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98830
Ubuntu:26.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98830
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98830
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98830
Ubuntu:26.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98830
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-hwe-7.0no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98830
Ubuntu:26.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98830
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-98830
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-98830
Ubuntu:26.04:LTSlinux-oem-7.0no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98830
Ubuntu:26.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98830
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98830
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98830
Ubuntu:26.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-riscv-7.0no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-98830
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-98830
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-98830

Affected products (as reported)

VendorProductVersions
Linux Linux f95a29d40782f4f0052a692a822de3ba044b19ff – before b8310b55e53622a393d14af4939f620c1828778bf95a29d40782f4f0052a692a822de3ba044b19ff – before 819d4c1323e2a9b7329021d5367aa01add22b5dcf95a29d40782f4f0052a692a822de3ba044b19ff – before 02886c18a340da59df57365f29009e1258bfe333f95a29d40782f4f0052a692a822de3ba044b19ff – before 71d140099165de03128c00dd129f1eab21c6a3c4f95a29d40782f4f0052a692a822de3ba044b19ff – before 7acb36fd60a3e7b858f12e69a919c3609b281408f95a29d40782f4f0052a692a822de3ba044b19ff – before ce67ebe9d8629776ce38e6995ae72fb903c828db
Linux Linux 5.5

References