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    CVE-2017-17426

    The malloc function in the GNU C Library (aka glibc or libc6) 2.26 could return a memory block that is too small if an attempt is made to allocate an object whose size is close to SIZE_MAX, potentially leading to a subsequent heap overflow. This occurs because the per-thread cache (aka tcache) feature enables a code path that lacks an integer overflow check.

    Published:Oct 31, 2017
    Last Modified:Apr 20, 2025
    EPS:Dec 5, 2017
    EPSS Score:0.00358
    CVSS Score:8.1

    Affected Products

    Vendor
    Gnu
    Product
    Glibc

    Exploits

    https://sourceware.org/bugzilla/show_bug.cgi?id=22375https://sourceware.org/bugzilla/show_bug.cgi?id=22375

    Common Weakness Enumeration

    CWE-190 Integer Overflow or Wraparound

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

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    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