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Vulnerability · Published Sep 17, 2026 · Assigned by Linux

CVE-2026-92520bpf: Zero queue and stack outputs on lock failure

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 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 92.5% 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: bpf: Zero queue and stack outputs on lock failure Queue and stack pop/peek helpers accept an uninitialized output buffer because the verifier expects the helper to initialize it. The empty-map error path clears the buffer, but a failed lock acquisition returns -EBUSY without writing it. Clear the output before returning -EBUSY so BPF programs cannot observe uninitialized stack contents after a failed helper call.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-92520
Debian:13linux6.12.115-2DEBIAN-CVE-2026-92520
Debian:14linux7.2.6-1DEBIAN-CVE-2026-92520
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-92520
Ubuntu:26.04:LTSlinux7.0.0-42.42UBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-92520
Ubuntu:26.04:LTSlinux-aws7.0.0-1016.17UBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-92520
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-92520
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-92520
Ubuntu:26.04:LTSlinux-gcp7.0.0-1016.18UBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-92520
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-42.42~24.04.1UBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-92520
Ubuntu:26.04:LTSlinux-ibm7.0.0-1017.17UBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-92520
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-92520
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-92520
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1017.17UBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-92520
Ubuntu:26.04:LTSlinux-oracle7.0.0-1015.16UBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-92520
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-92520
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-92520
Ubuntu:26.04:LTSlinux-riscv7.0.0-42.42.1UBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-42.42.1~24.04.1UBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-92520
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-92520
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-92520

Affected products (as reported)

VendorProductVersions
Linux Linux e388671635acf470f0986d874389148fd234620b – before 6468e8ac026b44ae2a78114b80f9d1b9164d0f6ca34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8 – before a6090eeb289c5fa45f7b629befac2bd3c19a6daea34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8 – before 23b4bcc79bab5285275912b94e98c286f281de75a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8 – before 1534c4bff3aaca19c4c9a82f93e9b81f7c983de3a34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8 – before e2396b8a562073787e627a5f483f1bc5c452fa6aa34a9f1a19afe9c60ca0ea61dfeee63a1c2baac8 – before 7ac6e1ae41a09f1dd4baeeff1d028ae49ee0123240e34ea01748e5b8afdd40a172868be1e1ab0ede388c9d3eefaea99828ee5000c693128a5b41ee7c
Linux Linux 6.6

References