CVE-2026-64552
kernel: virtio-net: fix len check in receive_big()
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 27, 2026
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's virtio-net component. A malicious virtio backend can exploit an insufficient length check in the receive_big() function, leading to an out-of-bounds write. This vulnerability can result in a denial of service (DoS) due to system instability or crashes.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-787 · Out-of-bounds Write