Host process crash via SDHCI FIFO overflow
Published Nov 14, 2024 · Updated May 12, 2026
Heap-based buffer overflow in QEMU before 9.0.0 allows guest OS users to crash the host QEMU process through crafted SDHCI writes. While Command Inhibit is set, SDHCI emulation wrongly updates TRNMOD, desynchronizes controller state, enables DMA, and writes past the 512-byte fifo_buffer in sdhci_write_dataport. Exploitation requires control of a guest configured with the emulated SDHCI controller and interrupts only that host QEMU process.
Summary
What happened
Heap-based buffer overflow in QEMU before 9.0.0 allows guest OS users to crash the host QEMU process through crafted SDHCI writes. While Command Inhibit is set, SDHCI emulation wrongly updates TRNMOD, desynchronizes controller state, enables DMA, and writes past the 512-byte fifo_buffer in sdhci_write_dataport. Exploitation requires control of a guest configured with the emulated SDHCI controller and interrupts only that host QEMU process.
The record
- CVE
- CVE-2024-3447
- Published
- Nov 14, 2024
- Updated
- May 12, 2026
- Vendor
- Siemens
- Product
- RUGGEDCOM ROX RX1500
- Classifications
- CWE-122, T1499.004
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Nov 14, 2024CVE publishedPublication date reported by the CVE source.
- May 12, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <V2.17.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Upstream qtest SDHCI crash reproducerfunctional · demonstrated
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Technologies
Your stack
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Your stack
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