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Vulnerability · Published Oct 18, 2026 · Assigned by Linux

CVE-2026-98823wifi: cfg80211: preserve hidden-group beacon IE ownership

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 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 91.2% 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: preserve hidden-group beacon IE ownership A hidden-group probe-response entry borrows its beacon IEs from the group's beacon entry. cfg80211_update_assoc_bss_entry() can pass such an entry to cfg80211_update_known_bss() when merging scan entries after a channel switch. Copying the borrowed beacon_ies into the associated entry gives the same allocation two owners. Releasing the group's beacon entry can then leave the associated entry pointing to freed IEs, which are freed again when that entry is released. Skip beacon IE replacement when the source entry belongs to a hidden group. Preserve probe-response processing, the subsequent metadata updates, and the existing rejection path for conflicting hidden beacon updates.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-98823
Debian:13linux6.12.113-1DEBIAN-CVE-2026-98823
Debian:14linux7.2.10-1DEBIAN-CVE-2026-98823
Debian:12linux-6.126.12.113-1~deb12u1DEBIAN-CVE-2026-98823
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98823
Ubuntu:26.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98823
Ubuntu:26.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98823
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98823
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98823
Ubuntu:26.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98823
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-hwe-7.0no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98823
Ubuntu:26.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98823
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-98823
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-98823
Ubuntu:26.04:LTSlinux-oem-7.0no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98823
Ubuntu:26.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98823
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98823
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98823
Ubuntu:26.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-riscv-7.0no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-98823
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-98823
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-98823

Affected products (as reported)

VendorProductVersions
Linux Linux 0afd425b1b64251f19b5d8d8b49bf56fefbc643f – before 00f83d39675adc12d56957a1f5e316812157e4d30afd425b1b64251f19b5d8d8b49bf56fefbc643f – before 3c44f780d1738e9ddf438729f5ff6ceb45f9ded30afd425b1b64251f19b5d8d8b49bf56fefbc643f – before 8f79f429dc87a4f21e4fcf9a4d3df9484ca9a2940afd425b1b64251f19b5d8d8b49bf56fefbc643f – before 5617d5328839003c91007ce906b4f100b43926e90afd425b1b64251f19b5d8d8b49bf56fefbc643f – before 49b66110a08e4f926f6393e938f226de2750a08b0afd425b1b64251f19b5d8d8b49bf56fefbc643f – before dd7973a4130b0862be38d7e08cc0e874b3d999670afd425b1b64251f19b5d8d8b49bf56fefbc643f – before 5f27581c176f84b52ec0ab9be7b500c10667ef600afd425b1b64251f19b5d8d8b49bf56fefbc643f – before cc45f313d85533d647ce619326302aad6f797c14
Linux Linux 5.4

References