Alerts This Week
Warning Icon 1 1,154
Alerts This Week
Warning Icon 1 1,154

Ubuntu 20.04 LTS USN-7455-4 critical: linux-oracle kernel issues

ubuntu
Calendar Grey April 25, 2025
Dist Ubuntu Esm H88
Ubuntu Security Notice USN-7456-5 tackles severe kernel vulnerabilities impacting 22.04 LTS versions. Urgent measures needed.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-oracle-5.15: Linux kernel for Oracle Cloud systems

Details:

Jann Horn discovered that the watch_queue event notification subsystem in

the Linux kernel contained an out-of-bounds write vulnerability. A local

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

escalate their privileges. (CVE-2022-0995)

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:

- Network drivers;

- File systems infrastructure;

- NTFS3 file system;

- Ethernet bridge;

- Ethtool driver;

- IPv6 networking;

- Network traffic control;

- VMware vSockets driver;

(CVE-2025-21993, CVE-2025-21703, CVE-2024-50248, CVE-2025-21700,

CVE-2024-50256, CVE-2025-21701, CVE-2024-56651, CVE-2025-21756,

CVE-2024-26837, CVE-2025-21702, CVE-2024-46826)

Topics%20covered

Topics Covered

security advisory denial of service kernel ubuntu out-of-bounds cloud systems

Update Instructions

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

Ubuntu 20.04 LTS
  linux-image-5.15.0-1079-oracle  5.15.0-1079.85~20.04.1
  linux-image-oracle              5.15.0.1079.85~20.04.1

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-7455-4

https://ubuntu.com/security/notices/USN-7455-3

https://ubuntu.com/security/notices/USN-7455-2

https://ubuntu.com/security/notices/USN-7455-1

CVE-2022-0995, CVE-2024-26837, CVE-2024-46826, CVE-2024-50248,

CVE-2024-50256, CVE-2024-56651, CVE-2025-21700, CVE-2025-21701,

CVE-2025-21702, CVE-2025-21703, CVE-2025-21756, CVE-2025-21993

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7455-4

Topics%20covered

Topics Covered

security advisory denial of service kernel ubuntu out-of-bounds cloud systems

Package Information

https://launchpad.net/ubuntu/+source/linux-oracle-5.15/5.15.0-1079.85~20.04.1

Get the latest News and Insights

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

Your message here