CVE-2022-3239: Use After Free

Published Feb 22, 2022
·
Updated

A flaw use after free in the Linux kernel video4linux driver was found in the way user triggers em28xxusbprobe() for the Empia 28xx based TV cards. A local user could use this flaw to crash the system or potentially escalate their privileges on the system.

Other sources

A use-after-free flaw was found in the Linux kernel’s video4linux driver in how a user triggers the em28xxusbprobe() for the Empia 28xx-based TV cards. This flaw allows a local user to crash or potentially escalate their privileges on the system.

A vulnerability was found in Linux Kernel video4linux driver for Empia 28xx. Refcount leak could happen in em28xxusbprobe() causing use-after-free which might lead to privilege escalations. The reason is the call krefget function before krefinit finished in em28xxusbprobe.

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c08eadca1bdfa099e20a32f8fa4b52b2f672236d

— Red Hat

Affected Software

135 affected componentsFixes available
redhat/kernel-rt<0:4.18.0-477.10.1.rt7.274.el8_8
0:4.18.0-477.10.1.rt7.274.el8_8
redhat/kernel<0:4.18.0-477.10.1.el8_8
0:4.18.0-477.10.1.el8_8
redhat/kernel<0:5.14.0-162.6.1.el9_1
0:5.14.0-162.6.1.el9_1
redhat/kernel-rt<0:5.14.0-162.6.1.rt21.168.el9_1
0:5.14.0-162.6.1.rt21.168.el9_1
Linux Linux kernel>=3.15<4.14.295
Linux Linux kernel>=4.15<4.19.238
Linux Linux kernel>=4.20<5.4.189
Linux Linux kernel>=5.5<5.10.110
Linux Linux kernel>=5.11<5.15.33
Linux Linux kernel>=5.16<5.16.19
Linux Linux kernel>=5.17<5.17.2
redhat/linux kernel<5.18
5.18
debian/linux
6.1.176-16.1.190-16.12.107-16.12.115-27.2.12-17.2.15-1
debian/linux<5.17.3-1
5.17.3-1
debian/linux<5.17.3-1
5.17.3-1
debian/linux<5.17.3-1
5.17.3-1
ubuntu/linux-aws<4.4.0-1114.120
4.4.0-1114.120
ubuntu/linux-azure<4.15.0-1157.172~14.04.2
4.15.0-1157.172~14.04.2
ubuntu/linux-lts-xenial<4.4.0-235.269~14.04.1
4.4.0-235.269~14.04.1
ubuntu/linux<4.4.0-235.269
4.4.0-235.269
ubuntu/linux-aws<4.4.0-1152.167
4.4.0-1152.167
ubuntu/linux-aws-hwe<4.15.0-1146.158~16.04.2
4.15.0-1146.158~16.04.2
ubuntu/linux-azure<4.15.0-1159.174~16.04.1
4.15.0-1159.174~16.04.1
ubuntu/linux-gcp<4.15.0-1141.157~16.04.2
4.15.0-1141.157~16.04.2
ubuntu/linux-hwe<4.15.0-200.211~16.04.2
4.15.0-200.211~16.04.2
ubuntu/linux-kvm<4.4.0-1115.125
4.4.0-1115.125
ubuntu/linux-oracle<4.15.0-1111.122~16.04.2
4.15.0-1111.122~16.04.2
ubuntu/linux-hwe-edge*
ubuntu/linux-fips<4.4.0-1084.91
4.4.0-1084.91
ubuntu/linux-fips*
ubuntu/linux<4.15.0-200.211
4.15.0-200.211
ubuntu/linux-aws<4.15.0-1146.158
4.15.0-1146.158
ubuntu/linux-aws-5.4<5.4.0-1078.84~18.04.1
5.4.0-1078.84~18.04.1
ubuntu/linux-azure-4.15<4.15.0-1157.172
4.15.0-1157.172
ubuntu/linux-azure-5.4<5.4.0-1083.87~18.04.1
5.4.0-1083.87~18.04.1
ubuntu/linux-dell300x<4.15.0-1057.62
4.15.0-1057.62
ubuntu/linux-gcp-4.15<4.15.0-1141.157
4.15.0-1141.157
ubuntu/linux-gcp-5.4<5.4.0-1078.84~18.04.1
5.4.0-1078.84~18.04.1
ubuntu/linux-hwe-5.4<5.4.0-117.132~18.04.1
5.4.0-117.132~18.04.1
ubuntu/linux-ibm-5.4<5.4.0-1028.32~18.04.1
5.4.0-1028.32~18.04.1
ubuntu/linux-kvm<4.15.0-1132.137
4.15.0-1132.137
ubuntu/linux-oracle<4.15.0-1111.122
4.15.0-1111.122
ubuntu/linux-oracle-5.4<5.4.0-1076.83~18.04.1
5.4.0-1076.83~18.04.1
ubuntu/linux-raspi-5.4<5.4.0-1065.75~18.04.1
5.4.0-1065.75~18.04.1
ubuntu/linux-raspi2<4.15.0-1124.132
4.15.0-1124.132
ubuntu/linux-snapdragon<4.15.0-1142.152
4.15.0-1142.152
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-gke-4.15*
ubuntu/linux-gke-5.4*
ubuntu/linux-gkeop-5.4*
ubuntu/linux-hwe*
ubuntu/linux-hwe-edge*
ubuntu/linux-oem*
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-aws-fips<4.15.0-2085.91
4.15.0-2085.91
ubuntu/linux-azure-fips<4.15.0-2066.72
4.15.0-2066.72
ubuntu/linux-fips<4.15.0-1103.114
4.15.0-1103.114
ubuntu/linux-gcp-fips<4.15.0-2050.55
4.15.0-2050.55
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-117.132
5.4.0-117.132
ubuntu/linux-aws<5.4.0-1078.84
5.4.0-1078.84
ubuntu/linux-azure<5.4.0-1083.87
5.4.0-1083.87
ubuntu/linux-azure-5.15<5.15.0-1008.9~20.04.1
5.15.0-1008.9~20.04.1
ubuntu/linux-bluefield<5.4.0-1040.44
5.4.0-1040.44
ubuntu/linux-gcp<5.4.0-1078.84
5.4.0-1078.84
ubuntu/linux-gke<5.4.0-1074.79
5.4.0-1074.79
ubuntu/linux-gkeop<5.4.0-1046.48
5.4.0-1046.48
ubuntu/linux-hwe-5.15<5.15.0-41.44~20.04.1
5.15.0-41.44~20.04.1
ubuntu/linux-ibm<5.4.0-1026.29
5.4.0-1026.29
ubuntu/linux-intel-iotg-5.15<5.15.0-1008.11~20.04.1
5.15.0-1008.11~20.04.1
ubuntu/linux-iot<5.4.0-1004.6
5.4.0-1004.6
ubuntu/linux-kvm<5.4.0-1068.72
5.4.0-1068.72
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-42.45~20.04.1
5.15.0-42.45~20.04.1
ubuntu/linux-oem-5.14<5.14.0-1036.40
5.14.0-1036.40
ubuntu/linux-oracle<5.4.0-1076.83
5.4.0-1076.83
ubuntu/linux-raspi<5.4.0-1065.75
5.4.0-1065.75
ubuntu/linux-aws-5.11*
ubuntu/linux-aws-5.13*
ubuntu/linux-aws-5.8*
ubuntu/linux-azure-5.11*
ubuntu/linux-azure-5.13*
ubuntu/linux-azure-5.8*
ubuntu/linux-gcp-5.11*
ubuntu/linux-gcp-5.13*
ubuntu/linux-gcp-5.8*
ubuntu/linux-hwe-5.11*
ubuntu/linux-hwe-5.13*
ubuntu/linux-hwe-5.8*
ubuntu/linux-intel-5.13*
ubuntu/linux-oem-5.10*
ubuntu/linux-oem-5.13*
ubuntu/linux-oem-5.6*
ubuntu/linux-oracle-5.11*
ubuntu/linux-oracle-5.13*
ubuntu/linux-oracle-5.8*
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.11*
ubuntu/linux-riscv-5.8*
ubuntu/linux-aws-fips<5.4.0-1078.84+fips1
5.4.0-1078.84+fips1
ubuntu/linux-azure-fips<5.4.0-1083.87+fips1
5.4.0-1083.87+fips1
ubuntu/linux-fips<5.4.0-1054.61
5.4.0-1054.61
ubuntu/linux-gcp-fips<5.4.0-1078.84+fips1
5.4.0-1078.84+fips1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.15.0-37.39
5.15.0-37.39
ubuntu/linux-aws<5.15.0-1011.14
5.15.0-1011.14
ubuntu/linux-azure<5.15.0-1010.12
5.15.0-1010.12
ubuntu/linux-gcp<5.15.0-1008.12
5.15.0-1008.12
ubuntu/linux-gke<5.15.0-1008.10
5.15.0-1008.10
ubuntu/linux-ibm<5.15.0-1007.8
5.15.0-1007.8
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-intel-iotg<5.15.0-1008.11
5.15.0-1008.11
ubuntu/linux-kvm<5.15.0-1010.11
5.15.0-1010.11
ubuntu/linux-lowlatency<5.15.0-37.39
5.15.0-37.39
ubuntu/linux-oem-5.17<5.17.0-1004.4
5.17.0-1004.4
ubuntu/linux-oracle<5.15.0-1009.12
5.15.0-1009.12
ubuntu/linux-raspi<5.15.0-1011.13
5.15.0-1011.13
ubuntu/linux-realtime*
ubuntu/linux-riscv<5.15.0-1012.13
5.15.0-1012.13
ubuntu/linux-realtime<5.15.0-1014.14
5.15.0-1014.14
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 0:4.18.0-477.10.1.rt7.274.el8_8
  2. Upgrade

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

    Fixed in 0:4.18.0-477.10.1.el8_8
  3. Upgrade

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

    Fixed in 0:5.14.0-162.6.1.el9_1
  4. Upgrade

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

    Fixed in 0:5.14.0-162.6.1.rt21.168.el9_1
  5. Upgrade

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

    Fixed in 5.18
  6. Upgrade

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

    Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.12-1Fixed in 7.2.15-1
  7. Upgrade

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

    Fixed in 5.17.3-1
  8. Upgrade

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

    Fixed in 4.4.0-1114.120
  9. Upgrade

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

    Fixed in 4.15.0-1157.172~14.04.2
  10. Upgrade

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

    Fixed in 4.4.0-235.269~14.04.1
  11. Upgrade

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

    Fixed in 4.4.0-235.269
  12. Upgrade

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

    Fixed in 4.4.0-1152.167
  13. Upgrade

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

    Fixed in 4.15.0-1146.158~16.04.2
  14. Upgrade

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

    Fixed in 4.15.0-1159.174~16.04.1
  15. Upgrade

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

    Fixed in 4.15.0-1141.157~16.04.2
  16. Upgrade

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

    Fixed in 4.15.0-200.211~16.04.2
  17. Upgrade

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

    Fixed in 4.4.0-1115.125
  18. Upgrade

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

    Fixed in 4.15.0-1111.122~16.04.2
  19. Upgrade

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

    Fixed in 4.4.0-1084.91
  20. Upgrade

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

    Fixed in 4.15.0-200.211
  21. Upgrade

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

    Fixed in 4.15.0-1146.158
  22. Upgrade

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

    Fixed in 5.4.0-1078.84~18.04.1
  23. Upgrade

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

    Fixed in 4.15.0-1157.172
  24. Upgrade

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

    Fixed in 5.4.0-1083.87~18.04.1
  25. Upgrade

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

    Fixed in 4.15.0-1057.62
  26. Upgrade

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

    Fixed in 4.15.0-1141.157
  27. Upgrade

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

    Fixed in 5.4.0-1078.84~18.04.1
  28. Upgrade

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

    Fixed in 5.4.0-117.132~18.04.1
  29. Upgrade

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

    Fixed in 5.4.0-1028.32~18.04.1
  30. Upgrade

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

    Fixed in 4.15.0-1132.137
  31. Upgrade

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

    Fixed in 4.15.0-1111.122
  32. Upgrade

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

    Fixed in 5.4.0-1076.83~18.04.1
  33. Upgrade

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

    Fixed in 5.4.0-1065.75~18.04.1
  34. Upgrade

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

    Fixed in 4.15.0-1124.132
  35. Upgrade

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

    Fixed in 4.15.0-1142.152
  36. Upgrade

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

    Fixed in 4.15.0-2085.91
  37. Upgrade

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

    Fixed in 4.15.0-2066.72
  38. Upgrade

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

    Fixed in 4.15.0-1103.114
  39. Upgrade

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

    Fixed in 4.15.0-2050.55
  40. Upgrade

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

    Fixed in 5.4.0-117.132
  41. Upgrade

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

    Fixed in 5.4.0-1078.84
  42. Upgrade

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

    Fixed in 5.4.0-1083.87
  43. Upgrade

    Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1008.9~20.04.1
  44. Upgrade

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

    Fixed in 5.4.0-1040.44
  45. Upgrade

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

    Fixed in 5.4.0-1078.84
  46. Upgrade

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

    Fixed in 5.4.0-1074.79
  47. Upgrade

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

    Fixed in 5.4.0-1046.48
  48. Upgrade

    Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-41.44~20.04.1
  49. Upgrade

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

    Fixed in 5.4.0-1026.29
  50. Upgrade

    Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1008.11~20.04.1
  51. Upgrade

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

    Fixed in 5.4.0-1004.6
  52. Upgrade

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

    Fixed in 5.4.0-1068.72
  53. Upgrade

    Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-42.45~20.04.1
  54. Upgrade

    Upgrade ubuntu/linux-oem-5.14 to a version that resolves this vulnerability.

    Fixed in 5.14.0-1036.40
  55. Upgrade

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

    Fixed in 5.4.0-1076.83
  56. Upgrade

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

    Fixed in 5.4.0-1065.75
  57. Upgrade

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

    Fixed in 5.4.0-1078.84+fips1
  58. Upgrade

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

    Fixed in 5.4.0-1083.87+fips1
  59. Upgrade

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

    Fixed in 5.4.0-1054.61
  60. Upgrade

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

    Fixed in 5.4.0-1078.84+fips1
  61. Upgrade

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

    Fixed in 5.15.0-37.39
  62. Upgrade

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

    Fixed in 5.15.0-1011.14
  63. Upgrade

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

    Fixed in 5.15.0-1010.12
  64. Upgrade

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

    Fixed in 5.15.0-1008.12
  65. Upgrade

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

    Fixed in 5.15.0-1008.10
  66. Upgrade

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

    Fixed in 5.15.0-1007.8
  67. Upgrade

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

    Fixed in 5.15.0-1008.11
  68. Upgrade

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

    Fixed in 5.15.0-1010.11
  69. Upgrade

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

    Fixed in 5.15.0-37.39
  70. Upgrade

    Upgrade ubuntu/linux-oem-5.17 to a version that resolves this vulnerability.

    Fixed in 5.17.0-1004.4
  71. Upgrade

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

    Fixed in 5.15.0-1009.12
  72. Upgrade

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

    Fixed in 5.15.0-1011.13
  73. Upgrade

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

    Fixed in 5.15.0-1012.13
  74. Upgrade

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

    Fixed in 5.15.0-1014.14
  75. Configuration

    Blacklist the em28xx kernel module to prevent it from loading automatically.

    Linux kernel em28xx module module loading = blacklisted

Event History

Feb 22, 2022
CVE Published
12:00 AM
Sep 19, 2022
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionWeakness
Data Sourced
via Ubuntu·12:00 AM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Red Hat·02:16 PM
DescriptionSeverityAffected Software
Data Sourced
via OSV·08:15 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·08:15 PM
RemedyDescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2022-3239?

CVE-2022-3239 is rated as a high-severity vulnerability due to its potential for privilege escalation and system crashes.

2

How do I fix CVE-2022-3239?

To fix CVE-2022-3239, update your Linux kernel to versions 0:4.18.0-477.10.1.rt7.274.el8_8, 0:5.14.0-162.6.1.el9_1, or any versions specified in the remediation list.

3

Who is affected by CVE-2022-3239?

CVE-2022-3239 affects users of the Linux kernel, specifically those with Empia 28xx based TV cards and certain kernel versions.

4

What are the potential impacts of CVE-2022-3239?

The potential impacts of CVE-2022-3239 include system crashes and the potential for local users to escalate their privileges.

5

How can I check if I'm vulnerable to CVE-2022-3239?

You can check if you are vulnerable to CVE-2022-3239 by verifying your Linux kernel version and identifying if it falls within the vulnerable ranges.

Company

Resources

Contact

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