CVE-2020-26147

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    CVE-2020-26147

    Published: 11 May 2021Last Modified: 16 Apr 2026

    Summary:

    Details: An issue was discovered in the Linux kernel 5.8.9. The WEP, WPA, WPA2, and WPA3 implementations reassemble fragments even though some of them were sent in plaintext. This vulnerability can be abused to inject packets and/or exfiltrate selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used.

    References: https://www.fragattacks.com, https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu, https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63, https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf, https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md, https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html, https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html, http://www.openwall.com/lists/oss-security/2021/05/11/12

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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-2020-26147 | CVE-DB