What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-11-14 · updated 2026-06-17
• Weakness: CWE-122

Description

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.

Affected products

• NetApp Hci Compute Node: all versions
• QEMU: before 7.2.11; from 8.0.0 before 8.2.3; 9.0.0, 9.0.0-rc0, 9.0.0-rc1, 9.0.0-rc2 — fixed in 7.2.11, 8.2.3

How to fix

Upgrade to a fixed version: QEMU 7.2.11, 8.2.3. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/security/cve/CVE-2024-3447
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=58813
• https://bugzilla.redhat.com/show_bug.cgi?id=2274123
• https://patchew.org/QEMU/20240404085549.16987-1-philmd@linaro.org/
• https://lists.debian.org/debian-lts-announce/2025/04/msg00042.html
• https://security.netapp.com/advisory/ntap-20250425-0005/
• https://cert-portal.siemens.com/productcert/html/ssa-577017.html

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