Riskcovery

CVE-2025-12464

Qemu-kvm: stack buffer overflow in e1000 device via short frames in loopback mode

State
Published
Severity
6.2 Medium
Published
Oct 31, 2025
Updated
Aug 31, 2026
Reserved
Oct 29, 2025

Read the record on cve.org

Description

A stack-based buffer overflow was found in the QEMU e1000 network device. The code for padding short frames was dropped from individual network devices and moved to the net core code. The issue stems from the device's receive code still being able to process a short frame in loopback mode. This could lead to a buffer overrun in the e1000_receive_iov() function via the loopback code path. A malicious guest user could use this vulnerability to crash the QEMU process on the host, resulting in a denial of service.

Scores

CVSSScoreVectorSource
3.16.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hredhat

Weaknesses

  • CWE-121 Stack-based Buffer Overflow

Affected Products

ProductVersions
qemu
  • 8.1.0 to before 10.1.3Affected
Red Hat Enterprise Linux 10Red Hat
    Red Hat Enterprise Linux 6Red Hat
      Red Hat Enterprise Linux 7Red Hat
        Red Hat Enterprise Linux 7Red Hat
          Red Hat Enterprise Linux 8Red Hat
            Red Hat Enterprise Linux 9Red Hat
              Red Hat OpenShift Container Platform 4Red Hat
                Red Hat OpenShift Container Platform 4Red Hat

                  References

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