CVE-2026-99062
kernel: vsock/virtio: account only unread bytes in read_skb()
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 23, 2026
Updated · October 27, 2026
Description
A flaw was found in the Linux kernel's virtual socket (VSOCK) virtio implementation. A local user can trigger a denial of service (DoS) due to an integer underflow in receive byte accounting. When an application performs a partial read on a stream socket, the kernel incorrectly calculates the remaining unread data, causing socket operations to report improper errors or stall queued communications.
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 · 2.5CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE-191 · Integer Underflow (Wrap or Wraparound)