CVE-2021-3659: Null Pointer Dereference

Published Apr 6, 2021
·
Updated

A NULL pointer dereference flaw was found in the Linux kernel’s IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability.

Other sources

The bug is inside net/mac802154/llsec.c (IEEE 802.15.4 support). If fails allocating of the cipher handle for AEAD during initialization of LR-WPAN, then NULL pointer dereference could happen.

Reference: https://syzkaller.appspot.com/bug?extid=12cf5fbfdeba210a89dd

Upstream patch: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8

The previously used CVE for this one was CVE-2021-33033 (because this issue already incorrectly referenced before from that older CVE).

— Red Hat

Affected Software

114 affected componentsFixes available
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<5.12
5.12
Linux Linux kernel<5.12
Fedoraproject Fedora=34
redhat Enterprise Linux=7.0
redhat Enterprise Linux=8.0
redhat Enterprise Linux For Ibm Z Systems=8.0
redhat Enterprise Linux For Ibm Z Systems Eus=8.6
redhat Enterprise Linux For Power Little Endian Eus=8.6
redhat Enterprise Linux For Real Time=8.0
redhat Enterprise Linux For Real Time For Nfv=8.0
redhat Enterprise Linux For Real Time For Nfv Tus=8.6
redhat Enterprise Linux For Real Time Tus=8.6
redhat Enterprise Linux Server Aus=8.6
redhat Enterprise Linux Server Eus=8.6
redhat Enterprise Linux Server Tus=8.6
All of the following
redhat Codeready Linux Builder
Any of the following
redhat Enterprise Linux=8.0
redhat Enterprise Linux Eus=8.6
redhat Enterprise Linux For Power Little Endian=8.0
redhat Enterprise Linux For Power Little Endian Eus=8.6
All of the following
redhat Virtualization Host=4.0
redhat Enterprise Linux=8.0
redhat Codeready Linux Builder
redhat Enterprise Linux=8.0
redhat Enterprise Linux Eus=8.6
redhat Enterprise Linux For Power Little Endian=8.0
redhat Enterprise Linux For Power Little Endian Eus=8.6
redhat Virtualization Host=4.0
debian/linux
5.10.223-15.10.234-16.1.129-16.1.135-16.12.22-16.12.25-1
ubuntu/linux-aws<4.4.0-1117.123
4.4.0-1117.123
ubuntu/linux-azure<4.15.0-1115.128~14.04.1
4.15.0-1115.128~14.04.1
ubuntu/linux-lts-xenial<4.4.0-239.273~14.04.1
4.4.0-239.273~14.04.1
ubuntu/linux<4.4.0-239.273
4.4.0-239.273
ubuntu/linux-aws<4.4.0-1155.170
4.4.0-1155.170
ubuntu/linux-aws-hwe<4.15.0-1103.110~16.04.1
4.15.0-1103.110~16.04.1
ubuntu/linux-azure<4.15.0-1115.128~16.04.1
4.15.0-1115.128~16.04.1
ubuntu/linux-gcp<4.15.0-1100.113~16.04.1
4.15.0-1100.113~16.04.1
ubuntu/linux-hwe<4.15.0-144.148~16.04.1
4.15.0-144.148~16.04.1
ubuntu/linux-kvm<4.4.0-1118.128
4.4.0-1118.128
ubuntu/linux-oracle<4.15.0-1072.80~16.04.1
4.15.0-1072.80~16.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux-fips<4.4.0-1088.95
4.4.0-1088.95
ubuntu/linux-fips*
ubuntu/linux<4.15.0-144.148
4.15.0-144.148
ubuntu/linux-aws<4.15.0-1103.110
4.15.0-1103.110
ubuntu/linux-aws-5.4<5.4.0-1049.51~18.04.1
5.4.0-1049.51~18.04.1
ubuntu/linux-azure-4.15<4.15.0-1115.128
4.15.0-1115.128
ubuntu/linux-azure-5.4<5.4.0-1048.50~18.04.1
5.4.0-1048.50~18.04.1
ubuntu/linux-dell300x<4.15.0-1022.26
4.15.0-1022.26
ubuntu/linux-gcp-4.15<4.15.0-1100.113
4.15.0-1100.113
ubuntu/linux-gcp-5.4<5.4.0-1044.47~18.04.2
5.4.0-1044.47~18.04.2
ubuntu/linux-gke-5.4<5.4.0-1044.46~18.04.1
5.4.0-1044.46~18.04.1
ubuntu/linux-gkeop-5.4<5.4.0-1016.17~18.04.1
5.4.0-1016.17~18.04.1
ubuntu/linux-hwe-5.4<5.4.0-74.83~18.04.1
5.4.0-74.83~18.04.1
ubuntu/linux-kvm<4.15.0-1092.94
4.15.0-1092.94
ubuntu/linux-oracle<4.15.0-1072.80
4.15.0-1072.80
ubuntu/linux-oracle-5.4<5.4.0-1046.50~18.04.2
5.4.0-1046.50~18.04.2
ubuntu/linux-raspi-5.4<5.4.0-1036.39~18.04.1
5.4.0-1036.39~18.04.1
ubuntu/linux-raspi2<4.15.0-1086.91
4.15.0-1086.91
ubuntu/linux-snapdragon<4.15.0-1103.112
4.15.0-1103.112
ubuntu/linux-aws-5.0*
ubuntu/linux-aws-5.3*
ubuntu/linux-azure*
ubuntu/linux-azure-5.3*
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-5.3*
ubuntu/linux-gcp-edge*
ubuntu/linux-gke-4.15*
ubuntu/linux-hwe*
ubuntu/linux-hwe-edge*
ubuntu/linux-oem*
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-aws-fips<4.15.0-2045.47
4.15.0-2045.47
ubuntu/linux-azure-fips<4.15.0-2027.30
4.15.0-2027.30
ubuntu/linux-fips<4.15.0-1060.68
4.15.0-1060.68
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-74.83
5.4.0-74.83
ubuntu/linux-aws<5.4.0-1049.51
5.4.0-1049.51
ubuntu/linux-aws-5.8<5.8.0-1038.40~20.04.1
5.8.0-1038.40~20.04.1
ubuntu/linux-azure<5.4.0-1048.50
5.4.0-1048.50
ubuntu/linux-azure-5.8<5.8.0-1036.38~20.04.1
5.8.0-1036.38~20.04.1
ubuntu/linux-bluefield<5.4.0-1012.15
5.4.0-1012.15
ubuntu/linux-gcp<5.4.0-1044.47
5.4.0-1044.47
ubuntu/linux-gcp-5.8<5.8.0-1035.37~20.04.1
5.8.0-1035.37~20.04.1
ubuntu/linux-gke<5.4.0-1044.46
5.4.0-1044.46
ubuntu/linux-gkeop<5.4.0-1016.17
5.4.0-1016.17
ubuntu/linux-hwe-5.8<5.8.0-59.66~20.04.1
5.8.0-59.66~20.04.1
ubuntu/linux-kvm<5.4.0-1040.41
5.4.0-1040.41
ubuntu/linux-oem-5.10<5.10.0-1025.26
5.10.0-1025.26
ubuntu/linux-oracle<5.4.0-1046.50
5.4.0-1046.50
ubuntu/linux-oracle-5.8<5.8.0-1033.34~20.04.1
5.8.0-1033.34~20.04.1
ubuntu/linux-raspi<5.4.0-1036.39
5.4.0-1036.39
ubuntu/linux-riscv-5.8<5.8.0-29.31~20.04.1
5.8.0-29.31~20.04.1
ubuntu/linux-oem-5.6*
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-aws-fips<5.4.0-1069.73+fips2
5.4.0-1069.73+fips2
ubuntu/linux-azure-fips<5.4.0-1073.76+fips1
5.4.0-1073.76+fips1
ubuntu/linux-gcp-fips<5.4.0-1067.71~20.04.1
5.4.0-1067.71~20.04.1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-realtime*
ubuntu/linux-raspi-realtime*
ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 0:4.18.0-348.rt7.130.el8
  2. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:4.18.0-348.el8
  3. Upgrade

    Upgrade redhat/Kernel to a version that resolves this vulnerability.

    Fixed in 5.12
  4. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 5.10.223-1Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.22-1Fixed in 6.12.25-1
  5. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1117.123
  6. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 4.15.0-1115.128~14.04.1
  7. Upgrade

    Upgrade ubuntu/linux-lts-xenial to a version that resolves this vulnerability.

    Fixed in 4.4.0-239.273~14.04.1
  8. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 4.4.0-239.273
  9. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1155.170
  10. Upgrade

    Upgrade ubuntu/linux-aws-hwe to a version that resolves this vulnerability.

    Fixed in 4.15.0-1103.110~16.04.1
  11. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 4.15.0-1115.128~16.04.1
  12. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 4.15.0-1100.113~16.04.1
  13. Upgrade

    Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.

    Fixed in 4.15.0-144.148~16.04.1
  14. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 4.4.0-1118.128
  15. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 4.15.0-1072.80~16.04.1
  16. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 4.4.0-1088.95
  17. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 4.15.0-144.148
  18. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.15.0-1103.110
  19. Upgrade

    Upgrade ubuntu/linux-aws-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1049.51~18.04.1
  20. Upgrade

    Upgrade ubuntu/linux-azure-4.15 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1115.128
  21. Upgrade

    Upgrade ubuntu/linux-azure-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1048.50~18.04.1
  22. Upgrade

    Upgrade ubuntu/linux-dell300x to a version that resolves this vulnerability.

    Fixed in 4.15.0-1022.26
  23. Upgrade

    Upgrade ubuntu/linux-gcp-4.15 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1100.113
  24. Upgrade

    Upgrade ubuntu/linux-gcp-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1044.47~18.04.2
  25. Upgrade

    Upgrade ubuntu/linux-gke-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1044.46~18.04.1
  26. Upgrade

    Upgrade ubuntu/linux-gkeop-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1016.17~18.04.1
  27. Upgrade

    Upgrade ubuntu/linux-hwe-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-74.83~18.04.1
  28. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 4.15.0-1092.94
  29. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 4.15.0-1072.80
  30. Upgrade

    Upgrade ubuntu/linux-oracle-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1046.50~18.04.2
  31. Upgrade

    Upgrade ubuntu/linux-raspi-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1036.39~18.04.1
  32. Upgrade

    Upgrade ubuntu/linux-raspi2 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1086.91
  33. Upgrade

    Upgrade ubuntu/linux-snapdragon to a version that resolves this vulnerability.

    Fixed in 4.15.0-1103.112
  34. Upgrade

    Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-2045.47
  35. Upgrade

    Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-2027.30
  36. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-1060.68
  37. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 5.4.0-74.83
  38. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 5.4.0-1049.51
  39. Upgrade

    Upgrade ubuntu/linux-aws-5.8 to a version that resolves this vulnerability.

    Fixed in 5.8.0-1038.40~20.04.1
  40. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 5.4.0-1048.50
  41. Upgrade

    Upgrade ubuntu/linux-azure-5.8 to a version that resolves this vulnerability.

    Fixed in 5.8.0-1036.38~20.04.1
  42. Upgrade

    Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.

    Fixed in 5.4.0-1012.15
  43. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 5.4.0-1044.47
  44. Upgrade

    Upgrade ubuntu/linux-gcp-5.8 to a version that resolves this vulnerability.

    Fixed in 5.8.0-1035.37~20.04.1
  45. Upgrade

    Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.

    Fixed in 5.4.0-1044.46
  46. Upgrade

    Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.

    Fixed in 5.4.0-1016.17
  47. Upgrade

    Upgrade ubuntu/linux-hwe-5.8 to a version that resolves this vulnerability.

    Fixed in 5.8.0-59.66~20.04.1
  48. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 5.4.0-1040.41
  49. Upgrade

    Upgrade ubuntu/linux-oem-5.10 to a version that resolves this vulnerability.

    Fixed in 5.10.0-1025.26
  50. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 5.4.0-1046.50
  51. Upgrade

    Upgrade ubuntu/linux-oracle-5.8 to a version that resolves this vulnerability.

    Fixed in 5.8.0-1033.34~20.04.1
  52. Upgrade

    Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.

    Fixed in 5.4.0-1036.39
  53. Upgrade

    Upgrade ubuntu/linux-riscv-5.8 to a version that resolves this vulnerability.

    Fixed in 5.8.0-29.31~20.04.1
  54. Upgrade

    Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1069.73+fips2
  55. Upgrade

    Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1073.76+fips1
  56. Upgrade

    Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1067.71~20.04.1
  57. Configuration

    Prevent the mac802154 kernel module from being loaded automatically.

    Linux kernel IEEE 802.15.4 subsystem mac802154 module loading = blacklisted

Event History

Apr 6, 2021
CVE Published
07:22 PM
Aug 22, 2022
CVE Published
via MITRE·02:49 PM
Data Sourced
via MITRE·02:49 PM
DescriptionWeakness
Data Sourced
via OSV·03:15 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2021-3659?

The severity of CVE-2021-3659 is high due to its impact on system availability.

2

How do I fix CVE-2021-3659?

To fix CVE-2021-3659, upgrade to the patched versions of the Linux kernel as specified by your distribution, such as kernel-rt 0:4.18.0-348.rt7.130.el8 or kernel 0:4.18.0-348.el8.

3

What causes CVE-2021-3659?

CVE-2021-3659 is caused by a NULL pointer dereference flaw in the IEEE 802.15.4 wireless networking subsystem of the Linux kernel.

4

Which Linux distributions are affected by CVE-2021-3659?

CVE-2021-3659 affects several Linux distributions including Red Hat Enterprise Linux, Fedora, and Debian.

5

Can CVE-2021-3659 be exploited remotely?

No, CVE-2021-3659 is a local vulnerability that requires local user access to the system to exploit.

Company

Resources

Contact

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