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Ubuntu 23.04: USN-6502-2 critical: kernel issues and code execution

ubuntu
Calendar Grey November 27, 2023
Dist Ubuntu Esm H88
Ubuntu 23.04 has received critical updates addressing kernel vulnerabilities that threaten both stability and security.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-oracle: Linux kernel for Oracle Cloud systems

Details:

Ivan D Barrera, Christopher Bednarz, Mustafa Ismail, and Shiraz Saleem

discovered that the InfiniBand RDMA driver in the Linux kernel did not

properly check for zero-length STAG or MR registration. A remote attacker

could possibly use this to execute arbitrary code. (CVE-2023-25775)

Yu Hao discovered that the UBI driver in the Linux kernel did not properly

check for MTD with zero erasesize during device attachment. A local

privileged attacker could use this to cause a denial of service (system

crash). (CVE-2023-31085)

Manfred Rudigier discovered that the Intel(R) PCI-Express Gigabit (igb)

Ethernet driver in the Linux kernel did not properly validate received

frames that are larger than the set MTU size, leading to a buffer overflow

vulnerability. An attacker could use this to cause a denial of service

(system crash) ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical code execution Ubuntu kernel

Update Instructions

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

Ubuntu 23.04:
   linux-image-6.2.0-1016-oracle   6.2.0-1016.17
   linux-image-oracle              6.2.0.1016.16

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-6502-2

https://ubuntu.com/security/notices/USN-6502-1

CVE-2023-25775, CVE-2023-31085, CVE-2023-45871, CVE-2023-5090,

CVE-2023-5345

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6502-2

Topics%20covered

Topics Covered

security advisory denial of service critical code execution Ubuntu kernel

Package Information

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