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Ubuntu 14.04 LTS USN-7506-4: Kernel Update to Address DoS Risks

ubuntu
Calendar Grey May 13, 2025
Dist Ubuntu Esm H88
Ubuntu 14.04 LTS discussions emphasize vital security updates targeting kernel vulnerabilities to prevent denial of service attacks, urging administrators to apply patches promptly
Several security issues were fixed in the Linux kernel.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty Details: Demi Marie Obenour and Simon Gaiser discovered that several Xen para- virtualization device frontends did not properly restrict the access rights of device backends. An attacker could possibly use a malicious Xen backend to gain access to memory pages of a guest VM or cause a denial of service in the guest. (CVE-2022-23041) 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: - Hardware crypto device drivers; - GPU drivers; - IIO subsystem; - Media drivers; - Network drivers; - SCSI subsystem; - SPI subsystem; - USB Gadget drivers; - Ceph distributed file system; - File sys...

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Topics%20covered

Topics Covered

security advisory denial of service software patch system update kernel issues linux-lts-xenial

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS linux-image-4.4.0-268-generic 4.4.0-268.302~14.04.1 Available with Ubuntu Pro linux-image-4.4.0-268-lowlatency 4.4.0-268.302~14.04.1 Available with Ubuntu Pro linux-image-generic-lts-xenial 4.4.0.268.302~14.04.1 Available with Ubuntu Pro linux-image-lowlatency-lts-xenial 4.4.0.268.302~14.04.1 Available with Ubuntu Pro linux-image-virtual-lts-xenial 4.4.0.268.302~14.04.1 Available with Ubuntu Pro 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-7506-4

https://ubuntu.com/security/notices/USN-7506-3

https://ubuntu.com/security/notices/USN-7506-2

https://ubuntu.com/security/notices/USN-7506-1

CVE-2021-46959, CVE-2021-47150, CVE-2021-47163, CVE-2021-47191,

CVE-2021-47219, CVE-2021-47245, CVE-2021-47500, CVE-2021-47506,

CVE-2021-47587, CVE-2022-23041, CVE-2023-52741, CVE-2024-26689,

CVE-2024-26915, CVE-2024-26974, CVE-2024-26996, CVE-2024-35864,

CVE-2024-36934, CVE-2024-46771, CVE-2024-46780, CVE-2024-49944,

CVE-2024-50237, CVE-2024-50256, CVE-2024-53063, CVE-2024-53066,

CVE-2024-53140, CVE-2024-53173, CVE-2024-56598, CVE-2024-56631,

CVE-2024-56642, CVE-2024-56650, CVE-2024-56770, CVE-2025-21971

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7506-4

Topics%20covered

Topics Covered

security advisory denial of service software patch system update kernel issues linux-lts-xenial

Package Information

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