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Ubuntu 16.04 LTS USN-7506-3 high: Linux kernel access control flaws

ubuntu
Calendar Grey May 12, 2025
Dist Ubuntu Esm H88
Multiple vulnerabilities within the Ubuntu Linux kernel have been addressed to avert the risk of data breaches and unauthorized system access.
Several security issues were fixed in the Linux kernel.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-fips: Linux kernel with FIPS 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 systems infrastructure; - JFS file system; ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service kernel update access control Ubuntu Xen security

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS linux-image-4.4.0-1113-fips 4.4.0-1113.120 Available with Ubuntu Pro linux-image-fips 4.4.0.1113.114 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-7506-3

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

Ubuntu Security Notice USN-7506-3

Topics%20covered

Topics Covered

security advisory denial of service kernel update access control Ubuntu Xen security

Package Information

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