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Vulnerability · Published Oct 23, 2026 · Assigned by Linux

CVE-2026-99080fs: Free any excess xarray nodes in clear_inode()

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 89.8% 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: fs: Free any excess xarray nodes in clear_inode() For many years we've had a hard to hit leak of xarray nodes. Hugh documented it well in commit 786b31121a2c. Recently people and syzbot have found ways to force it to happen with madvise. Rather than fix the leaks where they happen, just call xa_destroy() which has the side-effect of cycling the i_pages lock.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-99080
Debian:13linux6.12.113-1DEBIAN-CVE-2026-99080
Debian:14linux7.2.11-1DEBIAN-CVE-2026-99080
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-99080
Ubuntu:26.04:LTSlinuxno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-99080
Ubuntu:26.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-99080
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-99080
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-99080
Ubuntu:26.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-99080
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-hwe-7.0no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-99080
Ubuntu:26.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-99080
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-99080
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-99080
Ubuntu:26.04:LTSlinux-oem-7.0no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-99080
Ubuntu:26.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-99080
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-99080
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-99080
Ubuntu:26.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-riscv-7.0no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-99080
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-99080
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-99080

Affected products (as reported)

VendorProductVersions
Linux Linux 77da9389b9d5f07d54fda092d1ab56002ec0019a – before 3e837269bbfe78a602e0c259d57ffafe7a4df3b277da9389b9d5f07d54fda092d1ab56002ec0019a – before 813779d7974e51a6950c7237708853b129d564e177da9389b9d5f07d54fda092d1ab56002ec0019a – before 04456642e33022cc53562a91393a09d492124b4477da9389b9d5f07d54fda092d1ab56002ec0019a – before f1c966eb6ed5e190c90a56c5bdaa69967de39f2177da9389b9d5f07d54fda092d1ab56002ec0019a – before 21f51434c47d8628b62275ae6c6ad6b573abcd0277da9389b9d5f07d54fda092d1ab56002ec0019a – before 50cff3f112d64db6e5f57355f79bc837db8fe13277da9389b9d5f07d54fda092d1ab56002ec0019a – before 43f830e2bb84b22ca824b20bb861d823ecb520bd77da9389b9d5f07d54fda092d1ab56002ec0019a – before ee3f011250104129893d8e9599147e457d4d7280
Linux Linux 4.20

References