Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 556
Alerts This Week
Warning Icon 1 556

Ubuntu 20.04 LTS: USN-6234-1 Critical Xilinx ZynqMP Kernel DoS Issue

ubuntu
Calendar Grey July 18, 2023
Dist Ubuntu Esm H88
Security update issued for Fedora focusing on Intel CPU flaws to mitigate risks of unexpected system failures.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors

Details:

Hangyu Hua discovered that the Flower classifier implementation in the

Linux kernel contained an out-of-bounds write vulnerability. An attacker

could use this to cause a denial of service (system crash) or possibly

execute arbitrary code. (CVE-2023-35788, LP: #2023577)

It was discovered that for some Intel processors the INVLPG instruction

implementation did not properly flush global TLB entries when PCIDs are

enabled. An attacker could use this to expose sensitive information

(kernel memory) or possibly cause undesired behaviors. (LP: #2023220)

Topics%20covered

Topics Covered

security advisory denial of service kernel update critical ubuntu system crash linux-xilinx-zynqmp

Update Instructions

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1025-xilinx-zynqmp  5.4.0-1025.29
   linux-image-xilinx-zynqmp       5.4.0.1025.27

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-6234-1

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2023220

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2023577

CVE-2023-35788

Severity
critical
Lowest
Low
Medium
High
Critical

July 18, 2023

Topics%20covered

Topics Covered

security advisory denial of service kernel update critical ubuntu system crash linux-xilinx-zynqmp

Package Information

https://launchpad.net/ubuntu/+source/linux-xilinx-zynqmp/5.4.0-1025.29

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.