CVE-2026-64113
A critical use‑after‑free bug was discovered in the Linux kernel’s ixgbevf driver, which manages virtual functions for Intel 10GbE adapters. The flaw allows an attacker to free a packet buffer and then cause the driver to read from that freed memory, potentially crashing the system or enabling further exploitation. The issue has been fixed in the kernel.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Linux kernel, ixgbevf driver for Intel 10GbE virtual function adapters (e.g., 82599). Typical users are Linux system administrators running Intel 10GbE NICs with virtual functions.
Real-world impact
An attacker could crash the kernel or potentially execute arbitrary code by triggering the use‑after‑free in the network driver.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability is exploitable over the network with no authentication or user interaction, and it can compromise confidentiality, integrity, and availability.
What to do about it
- 01Update the Linux kernel to a version that includes the ixgbevf patch.
NVD description
Timeline
- Jul 19, 2026 · 14d agoPublishedDisclosed and added to the National Vulnerability Database.
- Jul 20, 2026 · 13d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.
- Jul 30, 2026 · 3d agoAdvisory updatedThe NVD record was last revised.
How it’s attacked
References & advisories
- git.kernel.org/stable/c/3d931ac62411a7e43b…
- git.kernel.org/stable/c/55b3e91d62b2f7a241…
- git.kernel.org/stable/c/5d49b568c188dc7719…
- git.kernel.org/stable/c/6ef30384a50a50e4a4…
- git.kernel.org/stable/c/a244395d8c563ed1bb…
- git.kernel.org/stable/c/add70e2682c0ad3be2…
- git.kernel.org/stable/c/dfef79e09ed2f5df97…
- git.kernel.org/stable/c/e8768bcbe5cd30c4ea…