CVE-2017-8284

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    CVE-2017-8284

    Published: 26 Apr 2017Last Modified: 8 Jul 2026

    Summary:

    Details: 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.

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

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    v2.8.1.1
    v2.8.1
    v2.8.0
    v2.8.0-rc4
    v2.8.0-rc3
    v2.8.0-rc2
    v2.8.0-rc1
    v2.8.0-rc0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High