Log in Start free

Vulnerability · Published Sep 24, 2026 · Assigned by Linux

CVE-2026-97503genirq/proc: Size interrupt directory names for 10-digit interrupt numbers

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 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 95.1% 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: genirq/proc: Size interrupt directory names for 10-digit interrupt numbers /proc/irq/<n>/ directory names are built in `char name[10]` buffers with `sprintf(name, "%u", irq)`. Ten-digit IRQ numbers already need 11 bytes including the trailing NUL, and current sparse-IRQ configurations allow interrupt numbers in that range. Size the temporary name buffer for the current decimal form and switch to bounded formatting when creating or removing the proc entry.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13linux6.12.115-2DEBIAN-CVE-2026-97503
Debian:14linux7.2.6-1DEBIAN-CVE-2026-97503
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-97503
Ubuntu:26.04:LTSlinux7.0.0-42.42UBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-97503
Ubuntu:26.04:LTSlinux-aws7.0.0-1016.17UBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-97503
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-97503
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-97503
Ubuntu:26.04:LTSlinux-gcp7.0.0-1016.18UBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-97503
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-42.42~24.04.1UBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-97503
Ubuntu:26.04:LTSlinux-ibm7.0.0-1017.17UBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-97503
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-97503
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-97503
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1017.17UBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-97503
Ubuntu:26.04:LTSlinux-oracle7.0.0-1015.16UBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-97503
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-97503
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-97503
Ubuntu:26.04:LTSlinux-riscv7.0.0-42.42.1UBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-42.42.1~24.04.1UBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-97503
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-97503
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-97503

Affected products (as reported)

VendorProductVersions
Linux Linux 721255b9826bd11c7a38b585905fc2dd0fb94e52 – before a8adf64fe7fd5d7c476769a043ee56eda7b775ce721255b9826bd11c7a38b585905fc2dd0fb94e52 – before 488bcd7fd3e9a2ad647b71b505a269fdb28753c4721255b9826bd11c7a38b585905fc2dd0fb94e52 – before d4b22fbae70037299e96539c330e4a1054b28a91721255b9826bd11c7a38b585905fc2dd0fb94e52 – before c2c7983c93f5d86962318be7e7298f1bc3feb1a6
Linux Linux 6.5

References