Ubuntu patches Linux kernel (NVIDIA BaseOS) network flaws
Original title: USN-9044-1: Linux kernel (NVIDIA BaseOS) vulnerabilities
The notice covers issues in network drivers and IPv4 networking tracked as CVE-2026-98239 and CVE-2026-98432.
Ubuntu Security Notice USN-9044-1 says several security issues were found in the Linux kernel used with NVIDIA BaseOS. The update corrects flaws in network drivers and IPv4 networking, tracked as CVE-2026-98239 and CVE-2026-98432. Ubuntu says an attacker could possibly use the issues to compromise the system. No exploitation status is given.
Unconfirmed: The notice does not describe exploitability conditions or whether attacks have been seen.
- Affected product is the Linux kernel (NVIDIA BaseOS).
- Subsystems named are network drivers and IPv4 networking.
- CVEs listed are CVE-2026-98239 and CVE-2026-98432.
Impact: Possible system compromise via kernel network flaws
| Product | Affected |
|---|---|
| Ubuntu Linux kernel (NVIDIA BaseOS) | — |
- 1.Apply the Ubuntu kernel update for NVIDIA BaseOS.
- Products
- Linux kernel
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-98239 | Use-after-free in Linux kernel lan743x RX checksum | 8.1 | — | ||
| CVE-2026-98432 | Use-after-free in Linux kernel IPv4 TCP options | 9.8 | <1% | PoC ×25 |
From the original article
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; - IPv4 networking; (CVE-2026-98239, CVE-2026-98432)
ubuntu.com
A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.