CVE-2024-3447 MEDIUM

CVE-2024-3447: Qemu: sdhci: heap buffer overflow in sdhci_write_dataport()

Vendor Red Hat
Product Red Hat Enterprise Linux 6
Weakness CWE-122
Published November 14, 2024
Last update May 12, 2026

CVSS base score

6.0/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

What the vulnerability does

01Description

A heap-based buffer overflow was found in the SDHCI device emulation of QEMU. The bug is triggered when both `s->data_count` and the size of `s->fifo_buffer` are set to 0x200, leading to an out-of-bound access. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.

Key dates

02Disclosure timeline

November 14, 2024 CVE published
May 12, 2026 Record updated