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[USN-8816-1] Linux kernel vulnerabilities
Posted on 24 September 2026
Ubuntu Security
==========================================================================Ubuntu Security Notice USN-8816-1
September 24, 2026

linux, linux-aws, linux-aws-7.0, linux-hwe-7.0, linux-ibm, linux-oracle,
linux-raspi, linux-realtime vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 24.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-ibm: Linux kernel for IBM cloud systems
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-realtime: Linux kernel for Real-time systems
- linux-aws-7.0: Linux kernel for Amazon Web Services (AWS) systems
- linux-hwe-7.0: Linux hardware enablement (HWE) kernel

Details:

Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- S390 architecture;
- x86 architecture;
- DRBD Distributed Replicated Block Device drivers;
- InfiniBand drivers;
- IOMMU subsystem;
- Multiple devices driver;
- Network drivers;
- Microsoft Azure Network Adapter (MANA) driver;
- NVME drivers;
- TCM subsystem;
- Virtio Host (VHOST) subsystem;
- Xen hypervisor drivers;
- AFS file system;
- File systems infrastructure;
- Network file systems library;
- Network file system (NFS) client;
- NTFS3 file system;
- OCFS2 file system;
- OrangeFS file system;
- SMB network file system;
- IPv4 networking;
- Sun RPC protocol;
- IPv6 networking;
- IP tunnels definitions;
- Netfilter;
- TCP network protocol;
- Locking primitives;
- 9P file system network protocol;
- B.A.T.M.A.N. meshing protocol;
- Networking core;
- IFE protocol;
- RxRPC session sockets;
- Network traffic control;
- SCTP protocol;
- SMC sockets;
- TIPC protocol;
- XFRM subsystem;
(CVE-2026-64530, CVE-2026-64534, CVE-2026-64535, CVE-2026-64541,
CVE-2026-64551, CVE-2026-68083, CVE-2026-68457, CVE-2026-68476,
CVE-2026-68477, CVE-2026-72014, CVE-2026-72020, CVE-2026-72033,
CVE-2026-72041, CVE-2026-72046, CVE-2026-72064, CVE-2026-72065,
CVE-2026-72069, CVE-2026-72083, CVE-2026-72084, CVE-2026-72085,
CVE-2026-72098, CVE-2026-72129, CVE-2026-72130, CVE-2026-72137,
CVE-2026-72139, CVE-2026-72191, CVE-2026-72192, CVE-2026-72194,
CVE-2026-72217, CVE-2026-72220, CVE-2026-72221, CVE-2026-72222,
CVE-2026-72226, CVE-2026-72234, CVE-2026-72248, CVE-2026-72249,
CVE-2026-72251, CVE-2026-72277, CVE-2026-72278, CVE-2026-72279,
CVE-2026-72287, CVE-2026-72288, CVE-2026-72289, CVE-2026-72296,
CVE-2026-72299, CVE-2026-72317, CVE-2026-72318, CVE-2026-72319,
CVE-2026-72320, CVE-2026-72322, CVE-2026-72323, CVE-2026-72329,
CVE-2026-72339, CVE-2026-72348, CVE-2026-72351, CVE-2026-72355,
CVE-2026-72366, CVE-2026-72381, CVE-2026-72393, CVE-2026-72398,
CVE-2026-72399, CVE-2026-72412, CVE-2026-72417, CVE-2026-72422,
CVE-2026-72429, CVE-2026-72436, CVE-2026-72442, CVE-2026-72451,
CVE-2026-72463, CVE-2026-72466, CVE-2026-72472, CVE-2026-72473,
CVE-2026-72477, CVE-2026-72491, CVE-2026-72493, CVE-2026-72494,
CVE-2026-72495, CVE-2026-72496, CVE-2026-72501, CVE-2026-74255,
CVE-2026-74267, CVE-2026-74268, CVE-2026-74269, CVE-2026-74287,
CVE-2026-74310, CVE-2026-74345, CVE-2026-74350, CVE-2026-74361,
CVE-2026-74376, CVE-2026-74384, CVE-2026-74394, CVE-2026-74398,
CVE-2026-74401, CVE-2026-74406, CVE-2026-74427, CVE-2026-74428,
CVE-2026-74433, CVE-2026-74434, CVE-2026-74436, CVE-2026-74439,
CVE-2026-80665)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
linux-image-7.0.0-1012-oracle 7.0.0-1012.12
linux-image-7.0.0-1012-oracle-64k 7.0.0-1012.12
linux-image-7.0.0-1013-aws 7.0.0-1013.13
linux-image-7.0.0-1013-aws-64k 7.0.0-1013.13
linux-image-7.0.0-1014-ibm 7.0.0-1014.14
linux-image-7.0.0-1020-raspi 7.0.0-1020.20
linux-image-7.0.0-1020-raspi-realtime 7.0.0-1020.20
linux-image-7.0.0-34-generic 7.0.0-34.34
linux-image-7.0.0-34-generic-64k 7.0.0-34.34
linux-image-7.0.0-34-realtime 7.0.0-34.34.1
linux-image-7.0.0-34-realtime-64k 7.0.0-34.34.1
linux-image-aws 7.0.0-1013.13
linux-image-aws-64k 7.0.0-1013.13
linux-image-aws-64k-7.0 7.0.0-1013.13
linux-image-aws-7.0 7.0.0-1013.13
linux-image-generic 7.0.0-34.34
linux-image-generic-64k 7.0.0-34.34
linux-image-generic-64k-7.0 7.0.0-34.34
linux-image-generic-64k-hwe-26.04 7.0.0-34.34
linux-image-generic-7.0 7.0.0-34.34
linux-image-generic-hwe-26.04 7.0.0-34.34
linux-image-ibm 7.0.0-1014.14
linux-image-ibm-7.0 7.0.0-1014.14
linux-image-oracle 7.0.0-1012.12
linux-image-oracle-64k 7.0.0-1012.12
linux-image-oracle-64k-7.0 7.0.0-1012.12
linux-image-oracle-7.0 7.0.0-1012.12
linux-image-raspi 7.0.0-1020.20
linux-image-raspi-7.0 7.0.0-1020.20
linux-image-raspi-realtime 7.0.0-1020.20
linux-image-raspi-realtime-7.0 7.0.0-1020.20
linux-image-realtime 7.0.0-34.34.1
linux-image-realtime-64k 7.0.0-34.34.1
linux-image-realtime-64k-7.0 7.0.0-34.34.1
linux-image-realtime-64k-hwe-26.04 7.0.0-34.34.1
linux-image-realtime-7.0 7.0.0-34.34.1
linux-image-realtime-hwe-26.04 7.0.0-34.34.1
linux-image-virtual 7.0.0-34.34
linux-image-virtual-7.0 7.0.0-34.34
linux-image-virtual-hwe-26.04 7.0.0-34.34

Ubuntu 24.04 LTS
linux-image-7.0.0-1013-aws 7.0.0-1013.13~24.04.1
linux-image-7.0.0-1013-aws-64k 7.0.0-1013.13~24.04.1
linux-image-7.0.0-34-generic 7.0.0-34.34~24.04.1
linux-image-7.0.0-34-generic-64k 7.0.0-34.34~24.04.1
linux-image-aws 7.0.0-1013.13~24.04.1
linux-image-aws-64k 7.0.0-1013.13~24.04.1
linux-image-aws-64k-7.0 7.0.0-1013.13~24.04.1
linux-image-aws-7.0 7.0.0-1013.13~24.04.1
linux-image-generic-64k-7.0 7.0.0-34.34~24.04.1
linux-image-generic-64k-hwe-24.04 7.0.0-34.34~24.04.1
linux-image-generic-7.0 7.0.0-34.34~24.04.1
linux-image-generic-hwe-24.04 7.0.0-34.34~24.04.1
linux-image-virtual-7.0 7.0.0-34.34~24.04.1
linux-image-virtual-hwe-24.04 7.0.0-34.34~24.04.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References:
https://ubuntu.com/security/notices/USN-8816-1
CVE-2026-64530, CVE-2026-64534, CVE-2026-64535, CVE-2026-64541,
CVE-2026-64551, CVE-2026-68083, CVE-2026-68457, CVE-2026-68476,
CVE-2026-68477, CVE-2026-72014, CVE-2026-72020, CVE-2026-72033,
CVE-2026-72041, CVE-2026-72046, CVE-2026-72064, CVE-2026-72065,
CVE-2026-72069, CVE-2026-72083, CVE-2026-72084, CVE-2026-72085,
CVE-2026-72098, CVE-2026-72129, CVE-2026-72130, CVE-2026-72137,
CVE-2026-72139, CVE-2026-72191, CVE-2026-72192, CVE-2026-72194,
CVE-2026-72217, CVE-2026-72220, CVE-2026-72221, CVE-2026-72222,
CVE-2026-72226, CVE-2026-72234, CVE-2026-72248, CVE-2026-72249,
CVE-2026-72251, CVE-2026-72277, CVE-2026-72278, CVE-2026-72279,
CVE-2026-72287, CVE-2026-72288, CVE-2026-72289, CVE-2026-72296,
CVE-2026-72299, CVE-2026-72317, CVE-2026-72318, CVE-2026-72319,
CVE-2026-72320, CVE-2026-72322, CVE-2026-72323, CVE-2026-72329,
CVE-2026-72339, CVE-2026-72348, CVE-2026-72351, CVE-2026-72355,
CVE-2026-72366, CVE-2026-72381, CVE-2026-72393, CVE-2026-72398,
CVE-2026-72399, CVE-2026-72412, CVE-2026-72417, CVE-2026-72422,
CVE-2026-72429, CVE-2026-72436, CVE-2026-72442, CVE-2026-72451,
CVE-2026-72463, CVE-2026-72466, CVE-2026-72472, CVE-2026-72473,
CVE-2026-72477, CVE-2026-72491, CVE-2026-72493, CVE-2026-72494,
CVE-2026-72495, CVE-2026-72496, CVE-2026-72501, CVE-2026-74255,
CVE-2026-74267, CVE-2026-74268, CVE-2026-74269, CVE-2026-74287,
CVE-2026-74310, CVE-2026-74345, CVE-2026-74350, CVE-2026-74361,
CVE-2026-74376, CVE-2026-74384, CVE-2026-74394, CVE-2026-74398,
CVE-2026-74401, CVE-2026-74406, CVE-2026-74427, CVE-2026-74428,
CVE-2026-74433, CVE-2026-74434, CVE-2026-74436, CVE-2026-74439,
CVE-2026-80665

Package Information:
https://launchpad.net/ubuntu/+source/linux/7.0.0-34.34
https://launchpad.net/ubuntu/+source/linux-aws/7.0.0-1013.13
https://launchpad.net/ubuntu/+source/linux-ibm/7.0.0-1014.14
https://launchpad.net/ubuntu/+source/linux-oracle/7.0.0-1012.12
https://launchpad.net/ubuntu/+source/linux-raspi/7.0.0-1020.20
https://launchpad.net/ubuntu/+source/linux-realtime/7.0.0-34.34.1
https://launchpad.net/ubuntu/+source/linux-aws-7.0/7.0.0-1013.13~24.04.1
https://launchpad.net/ubuntu/+source/linux-hwe-7.0/7.0.0-34.34~24.04.1

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