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Ubuntu 24.04 LTS Linux Kernel High-Risk Vulnerabilities Resolved USN-8491-1

ubuntu
Calendar Grey July 1, 2026
Dist Ubuntu Esm H88
Several security issues in Ubuntu's Linux kernel addressed by security advisory USN-8491-1. Update now to protect your system.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-oem-6.17: Linux kernel for OEM systems

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;

- x86 architecture;

- Block layer subsystem;

- Cryptographic API;

- DMA engine subsystem;

- InfiniBand drivers;

- STMicroelectronics network drivers;

- Network drivers;

- NVME drivers;

- SCSI subsystem;

- USB over IP driver;

- File systems infrastructure;

- Ext4 file system;

- Network file system (NFS) server daemon;

- SMB network file system;

- Kernel thread helper (kthread);

- IPv6 networking;

- Tracing infrastructure;

- Kernel exit() syscall;

- Scatterlist API;

- B.A.T.M.A.N. meshing protocol;

- Ethernet bridge;

- Ceph Core library;

- IPv4 networking;

- Multipath TCP;

- Netfilter;

- RxRPC sess...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory kernel update critical Ubuntu system compromise Linux kernel

Update Instructions

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

Ubuntu 24.04 LTS
  linux-image-6.17.0-1028-oem     6.17.0-1028.28
  linux-image-oem-24.04           6.17.0-1028.28
  linux-image-oem-24.04a          6.17.0-1028.28
  linux-image-oem-24.04b          6.17.0-1028.28
  linux-image-oem-24.04c          6.17.0-1028.28
  linux-image-oem-24.04d          6.17.0-1028.28
  linux-image-oem-6.17            6.17.0-1028.28

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-8491-1

CVE-2026-22984, CVE-2026-23272, CVE-2026-23278, CVE-2026-23392,

CVE-2026-23427, CVE-2026-23428, CVE-2026-23450, CVE-2026-23455,

CVE-2026-31402, CVE-2026-31418, CVE-2026-31436, CVE-2026-31448,

CVE-2026-31478, CVE-2026-31607, CVE-2026-31635, CVE-2026-31637,

CVE-2026-31649, CVE-2026-31657, CVE-2026-31659, CVE-2026-31668,

CVE-2026-31669, CVE-2026-31682, CVE-2026-31685, CVE-2026-31718,

CVE-2026-43011, CVE-2026-43037, CVE-2026-43038, CVE-2026-43071,

CVE-2026-43083, CVE-2026-43114, CVE-2026-43117, CVE-2026-43125,

CVE-2026-43186, CVE-2026-43197, CVE-2026-43304, CVE-2026-43341,

CVE-2026-43376, CVE-2026-43378, CVE-2026-43383, CVE-2026-43384,

CVE-2026-43402, CVE-2026-43406, CVE-2026-43407, CVE-2026-43414,

CVE-2026-43493, CVE-2026-43501, CVE-2026-45898, CVE-2026-45988,

CVE-2026-46039, CVE-2026-46043, CVE-2026-46115, CVE-2026-46119,

CVE-2026-46135, CVE-2026-46185, CVE-2026-46195, CVE-2026-46243,

CVE-2026-46244, CVE-2026-46266, CVE-2026-46289, CVE-2026-46290,

CVE-2026-46316, CVE-2026-46325

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8491-1

Topics%20covered

Topics Covered

security advisory kernel update critical Ubuntu system compromise Linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-6.17/6.17.0-1028.28

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