[USN-7455-4] Linux kernel (Oracle) vulnerabilities
[USN-7455-4] Linux kernel (Oracle) vulnerabilities
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Ubuntu Security Notice USN-7455-4
April 25, 2025
linux-oracle-5.15 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
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)
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
Package Information:
https://launchpad.net/ubuntu/+source/linux-oracle-5.15/5.15.0-1079.85~20.04.1
