CVE-2020-26147

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
Link Resource
http://www.openwall.com/lists/oss-security/2021/05/11/12 Mailing List Patch Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf Third Party Advisory
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html Mailing List Third Party Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu Third Party Advisory
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63 Third Party Advisory
https://www.fragattacks.com Product
http://www.openwall.com/lists/oss-security/2021/05/11/12 Mailing List Patch Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf Third Party Advisory
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html Mailing List Third Party Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu Third Party Advisory
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63 Third Party Advisory
https://www.fragattacks.com Product
https://cert-portal.siemens.com/productcert/html/ssa-019200.html
https://cert-portal.siemens.com/productcert/html/ssa-913875.html
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Configuration 3 (hide)

AND
cpe:2.3:o:arista:c-75_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:c-75:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND
cpe:2.3:o:arista:o-90_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:o-90:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND
cpe:2.3:o:arista:c-65_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:c-65:-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND
cpe:2.3:o:arista:w-68_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:w-68:-:*:*:*:*:*:*:*

Configuration 7 (hide)

AND
cpe:2.3:o:siemens:scalance_w700_ieee_802.11n_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:siemens:scalance_w700_ieee_802.11n:-:*:*:*:*:*:*:*

Configuration 8 (hide)

AND
cpe:2.3:o:siemens:scalance_w1700_ieee_802.11ac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:siemens:scalance_w1700_ieee_802.11ac:-:*:*:*:*:*:*:*

History

14 Apr 2026, 10:16

Type Values Removed Values Added
References
  • () https://cert-portal.siemens.com/productcert/html/ssa-019200.html -
  • () https://cert-portal.siemens.com/productcert/html/ssa-913875.html -

21 Nov 2024, 05:19

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

Information

Published : 2021-05-11 20:15

Updated : 2026-04-14 10:16


NVD link : CVE-2020-26147

Mitre link : CVE-2020-26147

CVE.ORG link : CVE-2020-26147


JSON object : View

Products Affected

siemens

  • scalance_w1700_ieee_802.11ac_firmware
  • scalance_w700_ieee_802.11n
  • scalance_w700_ieee_802.11n_firmware
  • scalance_w1700_ieee_802.11ac

debian

  • debian_linux

arista

  • c-75_firmware
  • c-65_firmware
  • o-90
  • w-68
  • c-75
  • w-68_firmware
  • o-90_firmware
  • c-65

linux

  • linux_kernel