Host crash or code execution via SDHCI transfers
Published Mar 23, 2021 · Updated Aug 3, 2024
Out-of-bounds access in QEMU 5.2.0 and earlier allows guest OS users with privileged access to crash the host process or execute code. Crafted SDHCI input induces a bogus transfer followed by out-of-bounds reads or writes in sdhci_do_adma or sdhci_sdma_transfer_multi_blocks. Exploitation requires control of a privileged guest with an emulated SDHCI controller; success interrupts its QEMU process or executes code in the host context.
Summary
What happened
Out-of-bounds access in QEMU 5.2.0 and earlier allows guest OS users with privileged access to crash the host process or execute code. Crafted SDHCI input induces a bogus transfer followed by out-of-bounds reads or writes in sdhci_do_adma or sdhci_sdma_transfer_multi_blocks. Exploitation requires control of a privileged guest with an emulated SDHCI controller; success interrupts its QEMU process or executes code in the host context.
The record
- CVE
- CVE-2021-3409
- Published
- Mar 23, 2021
- Updated
- Aug 3, 2024
- Vendor
- QEMU Project
- Product
- QEMU
- Classifications
- CWE-119, T1499.004
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Mar 23, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record 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=up to (including) 5.2.0
What conditions does exploitation require?
What is affected?
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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