CVE-2024-3447: A heap-based buffer overflow was found in the SDHCI device emulation of QEMU

Routine

MEDIUM 6.0UPGRADEMITIGATE

CVE-2024-3447 is a medium-severity flaw (CVSS 6.0) affecting qemu, hci compute node. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.0 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.6% (top 54%)
CISA exploited list	No
Weakness	CWE-122
Published	2024-11-14
Last modified	2026-06-17

Publisher (CNA): Fedora Project · Vendor: netapp · qemu

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-11-14 12:15 UTCPublished CVE record published
2026-06-17 07:44 UTCUpdated Record last modified

qemu qemu UPGRADE

Affected: < 7.2.11 · >= 8.0.0 and < 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

Safe to downgrade to: a release before 8.0.0

1. Check installed version

apt-cache policy qemu || rpm -q qemu || qemu --version

2. UPGRADE to 7.2.11 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade qemu

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade qemu

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 8.0.0 (Debian / Ubuntu)

apt-cache madison qemu sudo apt install qemu=<VERSION_BEFORE_8.0.0> sudo apt-mark hold qemu

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list qemu sudo dnf downgrade qemu-<VERSION_BEFORE_8.0.0> sudo dnf versionlock add qemu

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

netapp hci compute node MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-3447?

qemu: upgrade to 7.2.11, 8.2.3; hci compute node: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-3447 being exploited?

CVE-2024-3447 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-3447 affect?

CVE-2024-3447 affects qemu, hci compute node. Severity is medium (CVSS 6.0). 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

How urgent is CVE-2024-3447?

Priority 38/100. Public exploit reference

Software pages

QEMU vulnerabilities

Related CVEs

CVE-2025-54567 MEDIUM 4.2 UPGRADE hw/pci/pcie_sriov.c in QEMU through 10.0.3 mishandles the VF Enable bit write mask, a related issue to CVE-202
CVE-2025-54566 MEDIUM 4.2 UPGRADE hw/pci/pcie_sriov.c in QEMU through 10.0.3 has a migration state inconsistency, a related issue to CVE-2024-26
CVE-2024-8354 MEDIUM 5.5 MITIGATE MITIGATE A flaw was found in QEMU
CVE-2024-7730 HIGH 7.4 UPGRADE A heap buffer overflow was found in the virtio-snd device in QEMU
CVE-2024-6519 HIGH 8.2 MITIGATE A use-after-free vulnerability was found in the QEMU LSI53C895A SCSI Host Bus Adapter emulation

References

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