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Ubuntu 14.04 LTS: USN-6341-1 Moderate: Kernel Attack Risks

ubuntu
Calendar Grey September 6, 2023
Dist Ubuntu Esm H88
Multiple kernel vulnerabilities highlighted in Ubuntu USN-6342-1 affect system security and necessitate prompt patches.
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 (Available with Ubuntu Pro) Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux: Linux kernel Details: Jordy Zomer and Alexandra Sandulescu discovered that syscalls invoking the do_prlimit() function in the Linux kernel did not properly handle speculative execution barriers. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2023-0458) It was discovered that a use-after-free vulnerability existed in the IEEE 1394 (Firewire) implementation in the Linux kernel. A privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-3159) It was discovered that the virtual terminal driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possi...

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Topics%20covered

Topics Covered

security advisory denial of service kernel patch moderate severity system update local attack ubuntu

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS (Available with Ubuntu Pro): linux-image-3.13.0-193-generic 3.13.0-193.244 linux-image-3.13.0-193-lowlatency 3.13.0-193.244 linux-image-generic 3.13.0.193.203 linux-image-generic-lts-trusty 3.13.0.193.203 linux-image-lowlatency 3.13.0.193.203 linux-image-server 3.13.0.193.203 linux-image-virtual 3.13.0.193.203 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-6341-1

CVE-2023-0458, CVE-2023-3159, CVE-2023-3567, CVE-2023-3611,

CVE-2023-3776

Ubuntu Security Notice USN-6341-1

Topics%20covered

Topics Covered

security advisory denial of service kernel patch moderate severity system update local attack ubuntu

Package Information

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