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Vulnerability · Published Jul 19, 2026 · Assigned by Linux

CVE-2026-64000net: hsr: fix potential OOB access in supervision frame handling

Critical 9.8

In plain English

A critical-severity out-of-bounds read 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 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.5%top 57.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: net: hsr: fix potential OOB access in supervision frame handling Ensure the entire TLV header is linearized before access by adding sizeof(struct hsr_sup_tlv) to the pskb_may_pull() calls. Without this, a truncated frame could cause an out-of-bounds access.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.176-1DEBIAN-CVE-2026-64000
Debian:13linux6.12.94-1DEBIAN-CVE-2026-64000
Debian:14linux7.0.12-1DEBIAN-CVE-2026-64000
Ubuntu:24.04:LTSlinux6.8.0-142.142UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux6.8.0-142.142USN-8817-1
Ubuntu:26.04:LTSlinux7.0.0-28.28UBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-aws6.8.0-1065.68USN-8817-3
Ubuntu:24.04:LTSlinux-aws6.8.0-1065.68UBUNTU-CVE-2026-64000
Ubuntu:26.04:LTSlinux-aws7.0.0-1009.9UBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1065.68~22.04.1USN-8817-3
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1065.68~22.04.1UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-azure6.8.0-1068.76USN-8817-1
Ubuntu:24.04:LTSlinux-azure6.8.0-1068.76UBUNTU-CVE-2026-64000
Ubuntu:26.04:LTSlinux-azure7.0.0-1010.10UBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1068.76~22.04.1USN-8817-1
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1068.76~22.04.1UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-azure-7.07.0.0-1014.14~24.04.1UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1066.73UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1066.73USN-8817-1
Ubuntu:26.04:LTSlinux-azure-fde7.0.0-1009.9UBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1066.73~22.04.1USN-8817-1
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1066.73~22.04.1UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-azure-fde-7.07.0.0-1013.13~24.04.1UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-gcp6.8.0-1069.77USN-8817-1
Ubuntu:24.04:LTSlinux-gcp6.8.0-1069.77UBUNTU-CVE-2026-64000
Ubuntu:26.04:LTSlinux-gcp7.0.0-1008.8UBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1069.77~22.04.1USN-8817-1
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1069.77~22.04.1UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-gcp-7.07.0.0-1011.11~24.04.1UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-gke6.8.0-1064.72UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-gke6.8.0-1064.72USN-8817-1
Ubuntu:26.04:LTSlinux-gke7.0.0-1003.4UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1050.54USN-8817-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1050.54UBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-28.28~24.04.1UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-ibm6.8.0-1065.66USN-8817-1
Ubuntu:24.04:LTSlinux-ibm6.8.0-1065.66UBUNTU-CVE-2026-64000
Ubuntu:26.04:LTSlinux-ibm7.0.0-1010.10UBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1066.67~22.04.1UBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-142.142.1USN-8817-1
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-142.142.1UBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-142.142.1~22.04.1UBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-142.142.1~22.04.1USN-8817-1
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1063.66USN-8842-1
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1063.66UBUNTU-CVE-2026-64000
Ubuntu:26.04:LTSlinux-nvidia7.0.0-1016.16UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1063.66~22.04.1USN-8842-1
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1063.66~22.04.1UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-nvidia-7.07.0.0-1016.16~24.04.1UBUNTU-CVE-2026-64000
Ubuntu:26.04:LTSlinux-nvidia-bos7.0.0-2016.16UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1063.66.1USN-8842-1
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1063.66.1UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1035.38UBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-64000
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1009.9UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-oracle6.8.0-1062.65USN-8817-1
Ubuntu:24.04:LTSlinux-oracle6.8.0-1062.65UBUNTU-CVE-2026-64000
Ubuntu:26.04:LTSlinux-oracle7.0.0-1008.8UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1062.65~22.04.1USN-8817-1
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1062.65~22.04.1UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-oracle-7.07.0.0-1011.11~24.04.1UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-raspi6.8.0-1065.69USN-8817-1
Ubuntu:24.04:LTSlinux-raspi6.8.0-1065.69UBUNTU-CVE-2026-64000
Ubuntu:26.04:LTSlinux-raspi7.0.0-1015.15UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-64000
Ubuntu:26.04:LTSlinux-realtime7.0.0-28.28.1UBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-64000
Ubuntu:26.04:LTSlinux-riscv7.0.0-28.28.1UBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-142.142~22.04.1UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-28.28.1~24.04.3UBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-64000
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-vmware6.8.0-1008.8UBUNTU-CVE-2026-64000
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-64000

Affected products (as reported)

VendorProductVersions
Linux Linux eafaa88b3eb7f28aecb222281655473431d3ef2e – before 09a37dca090c55ffb1a33f52d8667f1c2367ef48eafaa88b3eb7f28aecb222281655473431d3ef2e – before a4b64f3e9c7b8259f7dd251a0313420ba7c01852eafaa88b3eb7f28aecb222281655473431d3ef2e – before 71c986c0ba45b7dc574fae27c83e7b6671556f37eafaa88b3eb7f28aecb222281655473431d3ef2e – before fbd0662f9c9a66e8cc3df3099cca8ed6d3837cc7eafaa88b3eb7f28aecb222281655473431d3ef2e – before 78607a6854a22a2502f68092202e75a39af4865deafaa88b3eb7f28aecb222281655473431d3ef2e – before f229426072fc865654a60978bb7fda790a051ff3
Linux Linux 5.16

Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References