CVE-2026-31911

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    CVE-2026-31911

    Published: 5 Sept 2026Last Modified: 27 Sept 2026

    Summary: abort() in libpcap before 1.10.7 on an invalid BPF opcode

    Details: libpcap BPF interpreter calls abort() if it encounters a BPF instruction that has an invalid opcode. In particular uncommon use cases a crafted filter program can terminate the OS process.

    References: https://github.com/the-tcpdump-group/libpcap/, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31911.json, https://nvd.nist.gov/vuln/detail/CVE-2026-31911, https://github.com/the-tcpdump-group/libpcap/commit/a715bcdde830299cba4171514385cb17ec19b6e9

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -a715bcdde830299cba4171514385cb17ec19b6e9

    Affected versions

    libpcap-1.10.6
    libpcap-1.10.5
    libpcap-1.10.4
    libpcap-1.10.3
    libpcap-1.10.2
    libpcap-1.10.1
    libpcap-1.10.0

    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
    CVE-2026-31911 | CVE-DB