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Vulnerability · Published Nov 3, 2026 · Assigned by Linux

CVE-2026-99245KEYS: Fix key_reject_and_link() race with keyring restriction

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 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 87.0% 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: KEYS: Fix key_reject_and_link() race with keyring restriction The restrict_link check in key_reject_and_link() is done before taking the keyring semaphore, racing with a concurrent keyring_restrict() that installs the restriction while holding the semaphore in write mode. Move the check to after __key_link_lock(), so it is done under the semaphore, matching the pattern used in __key_create_or_update().

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-99245
Debian:13linux6.12.115-1DEBIAN-CVE-2026-99245
Debian:14linux7.2.14-1DEBIAN-CVE-2026-99245
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.04:LTSlinuxno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.10linuxno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.10linux-awsno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.10linux-azureno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.10linux-gcpno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-hwe-7.0no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.04:LTSlinux-oem-7.0no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.10linux-oracleno fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.10linux-raspino fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.10linux-realtimeno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-99245
Ubuntu:26.10linux-riscvno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-riscv-7.0no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-99245
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-99245
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-99245

Affected products (as reported)

VendorProductVersions
Linux Linux 5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c – before c7956ec99ad0e173720d95de9fa788bb077809f25ac7eace2d00eab5ae0e9fdee63e38aee6001f7c – before 2c3d907dd15f4e30d4c35b9f7a7a5078de6a1b1f5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c – before 72f367417a6aee56821d0b0114cfd2b080008b635ac7eace2d00eab5ae0e9fdee63e38aee6001f7c – before 19dfc37c9deefa69dc805d01d35d1f2fd7902e335ac7eace2d00eab5ae0e9fdee63e38aee6001f7c – before 5787887eba0f0979a8c86d03a8e891395d5c24ad5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c – before 01835d3a3709be508ae5209f806640336c48e3955ac7eace2d00eab5ae0e9fdee63e38aee6001f7c – before 6fc0c818b1cac66003e937c8a0d3bfb23fd3f1305ac7eace2d00eab5ae0e9fdee63e38aee6001f7c – before 23a9163cc40b4996ba1e20533b1210a1a0bee416
Linux Linux 4.7

References