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9.4
CVE-2026-64396: Linux kernel for Debian/Ubuntu patched to prevent attacker takeover
CVE-2026-64396 · published 1 day ago
Summary
Several Linux kernel packages used in Debian and Ubuntu systems have been updated to close a security gap that could let an attacker take control of a server. The issue affects the standard kernel, the hardware enablement edge version, and the Amazon and Azure cloud variants. Apply the latest updates for these packages as soon as possible to keep your systems safe.
What to do
- Update debian linux-6.1 to version 6.1.180-1~deb11u1.
- Update debian linux to version 6.1.180-1.
- Update debian linux to version 6.12.96-1.
- Update debian linux to version 7.1.4-1.
- Update debian rootio-linux to version 6.1.177-1.aikido.162.
- Update canonical linux to version 5.15.0-187.197.aikido.111.
- Update canonical rootio-linux to version 5.15.0-187.197.aikido.111.
- Update canonical linux-aws-7.0 to version 7.0.0-1012.12~24.04.1.
- Update canonical linux-gcp-7.0 to version 7.0.0-1011.11~24.04.1.
- Update canonical linux-hwe-7.0 to version 7.0.0-31.31~24.04.1.
- Update canonical linux-riscv-7.0 to version 7.0.0-31.31.1~24.04.1.
- Update canonical linux to version 7.0.0-31.31.
- Update canonical linux-aws to version 7.0.0-1012.12.
- Update canonical linux-gcp to version 7.0.0-1011.11.
- Update canonical linux-gke to version 7.0.0-1006.7.
- Update canonical linux-oem-7.0 to version 7.0.0-1013.13.
- Update canonical linux-realtime to version 7.0.0-31.31.1.
- Update canonical linux-riscv to version 7.0.0-31.31.1.
- Update canonical linux-azure-7.0 to version 7.0.0-1014.14~24.04.1.
- Update canonical linux-nvidia-7.0 to version 7.0.0-1018.18~24.04.1.
- Update canonical linux-nvidia-tegra to version 6.8.0-1035.38.
- Update canonical linux-azure to version 7.0.0-1014.14.
- Update canonical linux-ibm to version 7.0.0-1013.13.
- Update canonical linux-nvidia to version 7.0.0-1018.18.
- Update canonical linux-nvidia-bos to version 7.0.0-2018.18.
- Update canonical linux-oracle to version 7.0.0-1011.11.
- Update canonical linux-raspi to version 7.0.0-1019.19.
- Update canonical linux-oracle-7.0 to version 7.0.0-1011.11~24.04.1.
- Update debian linux-6.12 to version 6.12.100-1~deb12u1.
- Update linux to version 5.15.0-198.208.aikido.116.
- Update rootio-linux to version 5.15.0-198.208.aikido.116.
- Update linux linux to version 367c42a611fe488b7b03f1f6737f4dee0e8b20a2 or later.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Debian:11 | debian | linux-6.1 |
< 6.1.180-1~deb11u1 Fix: upgrade to 6.1.180-1~deb11u1
|
| Ubuntu:16.04:LTS | canonical | linux-hwe-edge | All versions |
| Ubuntu:18.04:LTS | canonical | linux-aws-5.0 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-aws-5.3 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-azure | All versions |
| Ubuntu:18.04:LTS | canonical | linux-azure-5.3 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-azure-edge | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gcp | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gcp-5.3 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gke-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gke-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gkeop-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-hwe | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oem | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oracle-5.0 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oracle-5.3 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-aws-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-azure-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-fde | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-azure-fde-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-gcp-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gke | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gke-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gkeop | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gkeop-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-hwe-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.8 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-ibm-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-intel-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-intel-iotg-5.15 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-lowlatency-hwe-5.15 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-nvidia-tegra-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.10 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.14 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.6 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.13 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-oracle-5.15 | All versions |
Showing 50 of 180. Show the rest
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-raspi2 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.11 | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | linux-riscv-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux | All versions |
| Ubuntu:22.04:LTS | canonical | linux-allwinner-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-ibm | All versions |
| Ubuntu:22.04:LTS | canonical | linux-ibm-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-intel-iot-realtime | All versions |
| Ubuntu:22.04:LTS | canonical | linux-intel-iotg | All versions |
| Ubuntu:22.04:LTS | canonical | linux-kvm | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-tegra | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-tegra-igx | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-5.17 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.0 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.1 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oracle | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oracle-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oracle-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-raspi | All versions |
| Ubuntu:22.04:LTS | canonical | linux-realtime | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-6.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-xilinx-zynqmp | All versions |
| Ubuntu:Nvidia-BlueField:22.04:LTS | canonical | linux-bluefield | All versions |
| Ubuntu:Pro:FIPS-preview:22.04:LTS | canonical | linux-aws-fips | All versions |
| Ubuntu:Pro:FIPS-preview:22.04:LTS | canonical | linux-azure-fips | All versions |
| Ubuntu:Pro:FIPS-preview:22.04:LTS | canonical | linux-fips | All versions |
| Ubuntu:Pro:FIPS-preview:22.04:LTS | canonical | linux-gcp-fips | All versions |
| Ubuntu:Pro:Realtime:22.04:LTS | canonical | linux-realtime-6.8 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-aws-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-aws-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-aws-7.0 |
< 7.0.0-1012.12~24.04.1 Fix: upgrade to 7.0.0-1012.12~24.04.1
|
| Ubuntu:24.04:LTS | canonical | linux-azure-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-7.0 |
< 7.0.0-1014.14~24.04.1 Fix: upgrade to 7.0.0-1014.14~24.04.1
|
| Ubuntu:24.04:LTS | canonical | linux-azure-fde-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-fde-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-fde-7.0 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-nvidia | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-nvidia-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp-7.0 |
< 7.0.0-1011.11~24.04.1 Fix: upgrade to 7.0.0-1011.11~24.04.1
|
| Ubuntu:24.04:LTS | canonical | linux-hwe-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-hwe-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-hwe-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-hwe-7.0 |
< 7.0.0-31.31~24.04.1 Fix: upgrade to 7.0.0-31.31~24.04.1
|
| Ubuntu:24.04:LTS | canonical | linux-lowlatency-hwe-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-nvidia-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-nvidia-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-nvidia-7.0 |
< 7.0.0-1018.18~24.04.1 Fix: upgrade to 7.0.0-1018.18~24.04.1
|
| Ubuntu:24.04:LTS | canonical | linux-nvidia-lowlatency | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oem-6.11 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oem-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oem-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oem-6.8 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oracle-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oracle-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oracle-7.0 |
< 7.0.0-1011.11~24.04.1 Fix: upgrade to 7.0.0-1011.11~24.04.1
|
| Ubuntu:24.04:LTS | canonical | linux-raspi-realtime | All versions |
| Ubuntu:24.04:LTS | canonical | linux-riscv-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-riscv-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-riscv-7.0 |
< 7.0.0-31.31.1~24.04.1 Fix: upgrade to 7.0.0-31.31.1~24.04.1
|
| Ubuntu:24.04:LTS | canonical | linux-xilinx | All versions |
| Ubuntu:Pro:Realtime:24.04:LTS | canonical | linux-realtime-6.14 | All versions |
| Ubuntu:Pro:Realtime:24.04:LTS | canonical | linux-realtime-6.17 | All versions |
| Ubuntu:26.04:LTS | canonical | linux-nvidia-bos |
< 7.0.0-2018.18 Fix: upgrade to 7.0.0-2018.18
|
| Ubuntu:26.04:LTS | canonical | linux-oem-7.0 |
< 7.0.0-1013.13 Fix: upgrade to 7.0.0-1013.13
|
| – | linux | linux |
5.15 < 367c42a611fe488b7b03f1f6737f4dee0e8b20a2 |
| Debian:12 | debian | linux |
< 6.1.180-1 Fix: upgrade to 6.1.180-1
|
| Debian:13 | debian | linux |
< 6.12.96-1 Fix: upgrade to 6.12.96-1
|
| Debian:14 | debian | linux |
< 7.1.4-1 Fix: upgrade to 7.1.4-1
|
| Root:Debian:12 | debian | rootio-linux |
< 6.1.177-1.aikido.162 Fix: upgrade to 6.1.177-1.aikido.162
|
| Root:Ubuntu:22.04 | canonical | linux |
< 5.15.0-187.197.aikido.111 Fix: upgrade to 5.15.0-187.197.aikido.111
|
| Root:Ubuntu:22.04 | canonical | rootio-linux |
< 5.15.0-187.197.aikido.111 Fix: upgrade to 5.15.0-187.197.aikido.111
|
| – | linux | linux_kernel |
>= 5.15, < 6.1.178 >= 6.2, < 6.6.145 >= 6.7, < 6.12.96 >= 6.13, < 6.18.39 >= 6.19, < 7.1.4 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Ubuntu:26.04:LTS | canonical | linux |
< 7.0.0-31.31 Fix: upgrade to 7.0.0-31.31
|
| Ubuntu:26.04:LTS | canonical | linux-aws |
< 7.0.0-1012.12 Fix: upgrade to 7.0.0-1012.12
|
| Ubuntu:26.04:LTS | canonical | linux-gcp |
< 7.0.0-1011.11 Fix: upgrade to 7.0.0-1011.11
|
| Ubuntu:26.04:LTS | canonical | linux-gke |
< 7.0.0-1006.7 Fix: upgrade to 7.0.0-1006.7
|
| Ubuntu:26.04:LTS | canonical | linux-realtime |
< 7.0.0-31.31.1 Fix: upgrade to 7.0.0-31.31.1
|
| Ubuntu:26.04:LTS | canonical | linux-riscv |
< 7.0.0-31.31.1 Fix: upgrade to 7.0.0-31.31.1
|
| Ubuntu:24.04:LTS | canonical | linux-nvidia-tegra |
< 6.8.0-1035.38 Fix: upgrade to 6.8.0-1035.38
|
| Ubuntu:26.04:LTS | canonical | linux-azure |
< 7.0.0-1014.14 Fix: upgrade to 7.0.0-1014.14
|
| Ubuntu:26.04:LTS | canonical | linux-ibm |
< 7.0.0-1013.13 Fix: upgrade to 7.0.0-1013.13
|
| Ubuntu:26.04:LTS | canonical | linux-nvidia |
< 7.0.0-1018.18 Fix: upgrade to 7.0.0-1018.18
|
| Ubuntu:26.04:LTS | canonical | linux-oracle |
< 7.0.0-1011.11 Fix: upgrade to 7.0.0-1011.11
|
| Ubuntu:26.04:LTS | canonical | linux-raspi |
< 7.0.0-1019.19 Fix: upgrade to 7.0.0-1019.19
|
| Debian:12 | debian | linux-6.12 |
< 6.12.100-1~deb12u1 Fix: upgrade to 6.12.100-1~deb12u1
|
| Root:Ubuntu:22.04 | – | linux |
< 5.15.0-198.208.aikido.116 Fix: upgrade to 5.15.0-198.208.aikido.116
|
| Root:Ubuntu:22.04 | – | rootio-linux |
< 5.15.0-198.208.aikido.116 Fix: upgrade to 5.15.0-198.208.aikido.116
|
Original advisory text
CVE-2026-64396 in linux - Patched by Root
Root has patched CVE-2026-64396 in the linux package for Root:Ubuntu:22.04. Multiple fixed versions available.
References
- https://security-tracker.debian.org/tracker/CVE-2026-64396 Vendor Advisory
- https://git.kernel.org/stable/c/367c42a611fe488b7b03f1f6737f4dee0e8b20a2 Third Party Advisory
- https://git.kernel.org/stable/c/463bbd79698513af4dad50fe1c573825f297ca2e Third Party Advisory
- https://git.kernel.org/stable/c/5aa1cb01155f96824003baf7997cdf1f150caba3 Third Party Advisory
- https://git.kernel.org/stable/c/5c75275c0fc9a2deb0d8f5604edcb16f288171c8 Third Party Advisory
- https://git.kernel.org/stable/c/7703fd9aba1f2483c8e55f9ff73b7663e0761ed9 Third Party Advisory
- https://ubuntu.com/security/notices/USN-8726-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8727-1 Vendor Advisory
- https://ubuntu.com/security/CVE-2026-64396 Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2026-64396 Third Party Advisory
- https://git.kernel.org/linus/d20d1c8ba5765d1d12eefc0aee6385ab3f240e1e Third Party Advisory
- https://git.kernel.org/stable/c/d20d1c8ba5765d1d12eefc0aee6385ab3f240e1e Third Party Advisory
- https://ubuntu.com/security/notices/USN-8728-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8760-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8781-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8726-2 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8726-3 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8800-1 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8760-2 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8728-2 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8726-4 Vendor Advisory
- https://ubuntu.com/security/notices/USN-8728-3 Vendor Advisory
Internet-facing
14 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit (estimated)
- Gives an attacker full control (estimated)
Severity
9.4
Critical
Type
CWE-416Use After Free
Timeline
Published9 Oct 2026
Updated9 Oct 2026
First seen25 Jul 2026
Sources
CVE-2026-64396 · NVD
CVE-2026-64396 · MITRE
DEBIAN-CVE-2026-64396 · OSV
UBUNTU-CVE-2026-64396 · OSV
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