Log in Start free

Vulnerability · Published Sep 16, 2026 · Assigned by Linux

CVE-2026-89818drm/amdgpu/vcn: fix integer overflow in dec_msg buffer count check

High 7.1

In plain English

A high-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 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.2%top 94.8% 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: drm/amdgpu/vcn: fix integer overflow in dec_msg buffer count check If the supplied msg[2] (num_buffers) is 0x3FFFFFFF, the expression 6 + num_buffers * 4 wraps to 2 and the bounds check passes, letting the parser loop far past the end of the message BO. Triggering it additionally requires a ~4GiB mapping so that msg[1] survives the earlier "header does not fit in BO" check. Rewrite the test in division form, which is overflow-free by construction. Also update the message to reflect that msg is invalid.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.190-1DEBIAN-CVE-2026-89818
Debian:13linux6.12.111-1DEBIAN-CVE-2026-89818
Debian:14linux7.2.6-1DEBIAN-CVE-2026-89818
Debian:12linux-6.126.12.111-1~deb12u1DEBIAN-CVE-2026-89818
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-89818
Ubuntu:26.04:LTSlinux7.0.0-42.42UBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-89818
Ubuntu:26.04:LTSlinux-aws7.0.0-1016.17UBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-89818
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-89818
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-89818
Ubuntu:26.04:LTSlinux-gcp7.0.0-1016.18UBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-89818
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-42.42~24.04.1UBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-89818
Ubuntu:26.04:LTSlinux-ibm7.0.0-1017.17UBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-89818
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-89818
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-89818
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1017.17UBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-89818
Ubuntu:26.04:LTSlinux-oracle7.0.0-1015.16UBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-89818
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-89818
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-89818
Ubuntu:26.04:LTSlinux-riscv7.0.0-42.42.1UBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-42.42.1~24.04.1UBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-89818
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-89818
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-89818

Affected products (as reported)

VendorProductVersions
Linux Linux 88411caee8f576d6b5abf6531232fcc0ce756dc5 – before c2340281be4ddacb8c203e2bce59b126d1d6c4c8c72a8b4dc6d598e3831ef3abd9c6527dfbf4810e – before 6dceaeceaa7c8396339f3ea34b0110cb912ca61b7688143ca62edeecacb3ba0a2cea129dbd262a18 – before 47799e1f893d47d8af231710a61065e3ec8a13e863b51e8a9d54317d31cc3856c1e12407070d5fc2 – before 7e28853c78c20bb8ba4c1dba702430cd05e09f76b193019860d61e92da395eae2011f2f6716b182f – before 9ae19bd60891bea0a7b7504cc8dbfe74570ac3b3b193019860d61e92da395eae2011f2f6716b182f – before 4d7390530853eb7befda9cc786e4c86e8ad7ac9ef55552adb100eb54a6e6dabff4fbdc8679bd3fa082c535eff05490c71153af57de9fe85502fcb5d5
Linux Linux 7.1

References