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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

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 possibly expose sensitive

information (kernel memory). (CVE-2023-3567)

It was discovered that the Quick Fair Queueing network scheduler

...

Read the Full Advisory

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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