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Vulnerability · Published May 1, 2026 · Assigned by Linux

CVE-2026-31777ALSA: ctxfi: Check the error for index mapping

Medium 5.5

In plain English

A medium-severity 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 0.1% (higher than 2% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.1%top 98.1% 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: ALSA: ctxfi: Check the error for index mapping The ctxfi driver blindly assumed a proper value returned from daio_device_index(), but it's not always true. Add a proper error check to deal with the error from the function.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-31777
Debian:13linuxno fix listedDEBIAN-CVE-2026-31777
Debian:14linux6.19.12-1DEBIAN-CVE-2026-31777
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-31777
Ubuntu:25.10linuxno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-31777
Ubuntu:25.10linux-awsno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-31777
Ubuntu:25.10linux-azureno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-31777
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-31777
Ubuntu:25.10linux-gcpno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-31777
Ubuntu:26.04:LTSlinux-nvidia7.0.0-1006.6UBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-31777
Ubuntu:25.10linux-oracleno fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-31777
Ubuntu:25.10linux-raspino fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-31777
Ubuntu:25.10linux-realtimeno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-31777
Ubuntu:25.10linux-riscvno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-31777
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-31777
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-31777

Affected products (as reported)

VendorProductVersions
Linux Linux 8cc72361481f00253f1e468ade5795427386d593 – before 971854e7b6ddda78669d3d0cf6566c7b8aca1fdb8cc72361481f00253f1e468ade5795427386d593 – before d4d3b8cbb70a2de247cbfe99bdb232aef9ed59bc8cc72361481f00253f1e468ade5795427386d593 – before 277c6960d4ddb94d16198afd70c92c3d4593d131
Linux Linux 2.6.31

References