medium
5.4
CWE
307
Advisory Published
CVE Published
Updated

CVE-2020-26147

First published: Tue May 11 2021(Updated: )

A flaw was found in ieee80211_rx_h_defragment in net/mac80211/rx.c in the Linux Kernel's WiFi implementation. This vulnerability can be abused to inject packets or exfiltrate selected fragments when another device sends fragmented frames, and the WEP, CCMP, or GCMP data-confidentiality protocol is used. The highest threat from this vulnerability is to integrity.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/kernel-rt<0:4.18.0-348.rt7.130.el8
0:4.18.0-348.rt7.130.el8
redhat/kernel<0:4.18.0-348.el8
0:4.18.0-348.el8
redhat/Kernel<5.13
5.13
Android
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.16-1
Linux kernel>=4.4<4.4.271
Linux kernel>=4.9<4.9.271
Linux kernel>=4.14<4.14.235
Linux kernel>=4.19<4.19.193
Linux kernel>=5.4<5.4.124
Linux kernel>=5.10<5.10.42
Linux kernel>=5.12<5.12.9
Debian=9.0
All of
arista c-75 firmware
Arista C75-E
All of
Arista O-90
Arista O90E
All of
arista c-65 firmware
arista c-65
All of
Arista W-68
Arista W-68
All of
siemens scalance w700 ieee 802.11n firmware
Siemens SCALANCE W700 IEEE 802.11a/b/g/n
All of
Siemens SCALANCE W1700 IEEE 802.11ac
Siemens SCALANCE W1700 IEEE 802.11ac Firmware
arista c-75 firmware
Arista C75-E
Arista O-90
Arista O90E
arista c-65 firmware
arista c-65
Arista W-68
Arista W-68
siemens scalance w700 ieee 802.11n firmware
Siemens SCALANCE W700 IEEE 802.11a/b/g/n
Siemens SCALANCE W1700 IEEE 802.11ac
Siemens SCALANCE W1700 IEEE 802.11ac Firmware

Remedy

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

Remedy

http://www.openwall.com/lists/oss-security/2021/05/11/12

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2020-26147?

    CVE-2020-26147 is classified as a high-severity vulnerability due to the potential for packet injection and data exfiltration.

  • How do I fix CVE-2020-26147?

    To remediate CVE-2020-26147, update your system to kernel version 0:4.18.0-348.rt7.130.el8 or kernel version 0:4.18.0-348.el8 or higher.

  • What systems are affected by CVE-2020-26147?

    CVE-2020-26147 affects various versions of the Linux Kernel, including versions between 4.4 and 5.12.

  • Can CVE-2020-26147 be exploited remotely?

    Yes, CVE-2020-26147 can be exploited remotely through the injection of handcrafted packets when fragmented frames are used.

  • What impact does CVE-2020-26147 have on device security?

    CVE-2020-26147 can lead to serious security breaches by allowing attackers to intercept and manipulate fragmented wireless packets.

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