CVE Database›Document archive›CVE-2020-26146

CVE-2020-26146

kernel: reassembling encrypted fragments with non-consecutive packet numbers

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Severity

Low

Red Hat Product Security

5.3

CVSS 3.1

Review impact separately from score.

Published · May 11, 2021

Updated · June 28, 2026

Description

A vulnerability was found in Linux kernel, where the WiFi implementation reassemble fragments with non-consecutive packet numbers. An adversary can abuse this to exfiltrate selected fragments. This vulnerability is exploitable when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used. Note that WEP is vulnerable to this attack by design.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

CVSS 3.1 · 5.3
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

CWE-307 · Improper Restriction of Excessive Authentication Attempts