What’s Vulnerable › Vulnerabilities

CVE-2017-8284

• Severity: high (CVSS 7.0 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-04-26 · updated 2026-06-17
• Weakness: CWE-94

Description

The disas_insn function in target/i386/translate.c in QEMU before 2.9.0, when TCG mode without hardware acceleration is used, does not limit the instruction size, which allows local users to gain privileges by creating a modified basic block that injects code into a setuid program, as demonstrated by procmail. NOTE: the vendor has stated "this bug does not violate any security guarantees QEMU makes.

Affected products

• QEMU: through 2.8.1.1

References

• https://bugs.chromium.org/p/project-zero/issues/detail?id=1122
• https://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14
• https://bugs.chromium.org/p/project-zero/issues/detail?id=1122
• https://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14

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