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Vulnerability · Published Aug 15, 2026 · Assigned by Linux

CVE-2026-72278KVM: arm64: nv: Re-translate VNCR before injecting abort

Critical 9.3

In plain English

A critical-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 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.3Critical
Exploit odds (30 days)0.2%top 90.9% 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: KVM: arm64: nv: Re-translate VNCR before injecting abort KVM faults in the VNCR page with FOLL_WRITE whenever the guest aborts for a write, similar to how a regular stage-2 mapping is handled. It is entirely possible that the guest reads from the VNCR before writing to it, in which case the PFN could only be read-only. Invalidate the VNCR TLB and re-fetch the translation upon taking a VNCR abort, allowing the host mapping to be faulted in for write the second time around. Interestingly enough, this also satisfies the ordering requirements of FEAT_ETS2/3 between descriptor updates and MMU faults.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:14linux7.1.5-1DEBIAN-CVE-2026-72278
Ubuntu:26.04:LTSlinux7.0.0-34.34UBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux7.0.0-34.34USN-8816-1
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux-aws7.0.0-1013.13USN-8816-1
Ubuntu:26.04:LTSlinux-aws7.0.0-1013.13UBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-aws-7.07.0.0-1013.13~24.04.1USN-8816-1
Ubuntu:24.04:LTSlinux-aws-7.07.0.0-1013.13~24.04.1UBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux-azure7.0.0-1017.17UBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-azure-7.07.0.0-1017.17~24.04.1UBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux-azure-fde7.0.0-1016.16UBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-azure-fde-7.07.0.0-1016.16~24.04.1UBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux-gcp7.0.0-1013.13USN-8816-2
Ubuntu:26.04:LTSlinux-gcp7.0.0-1013.13UBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-gcp-7.07.0.0-1013.13~24.04.1USN-8816-2
Ubuntu:24.04:LTSlinux-gcp-7.07.0.0-1013.13~24.04.1UBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux-gke7.0.0-1007.8USN-8816-4
Ubuntu:26.04:LTSlinux-gke7.0.0-1007.8UBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-34.34~24.04.1USN-8816-1
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-34.34~24.04.1UBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux-ibm7.0.0-1014.14UBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux-ibm7.0.0-1014.14USN-8816-1
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-nvidia-7.07.0.0-1024.25~24.04.1UBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux-nvidia-bos7.0.0-2022.23UBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1014.14UBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1014.14USN-8816-2
Ubuntu:26.04:LTSlinux-oracle7.0.0-1012.12UBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux-oracle7.0.0-1012.12USN-8816-1
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-oracle-7.07.0.0-1012.12~24.04.1USN-8816-3
Ubuntu:24.04:LTSlinux-oracle-7.07.0.0-1012.12~24.04.1UBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux-raspi7.0.0-1020.20USN-8816-1
Ubuntu:26.04:LTSlinux-raspi7.0.0-1020.20UBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux-realtime7.0.0-34.34.1USN-8816-1
Ubuntu:26.04:LTSlinux-realtime7.0.0-34.34.1UBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-72278
Ubuntu:26.04:LTSlinux-riscv7.0.0-34.34.1UBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-72278
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-34.34.1~24.04.1UBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-72278
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-72278

Affected products (as reported)

VendorProductVersions
Linux Linux 2a359e072596fcb2e9e85017a865e3618a2fe5b5 – before ea7a76d7d614b5f82b4d0785f9af3550e860a71a2a359e072596fcb2e9e85017a865e3618a2fe5b5 – before 0a5dd8cf4d58ea28da132c2097cd1c525302ac482a359e072596fcb2e9e85017a865e3618a2fe5b5 – before bb645aa0a4caeaf7f9cd32e9a948594d434c1a8f
Linux Linux 6.16

References