CVE-2023-2513: Use After Free

Published May 4, 2023
·
Updated

A use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled the extra inode size for extended attributes. This flaw could allow a privileged local user to cause a system crash or other undefined behaviors.

Other sources

A use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled extra inode size for extended attributes.

Quoting the upstream commit below: "In the calculation formula, all values except sinodesize and iextrasize are fixed values. When iextrasize is the maximum value sinodesize - EXT4GOODOLDINODESIZE, minoffs is -4 and free is -8. The value overflows. As a result, the preceding issue is triggered when memcpy is executed."

Patch series: https://lore.kernel.org/all/20220616021358.2504451-1-libaokun1@huawei.com/

Upstream fix: https://github.com/torvalds/linux/commit/67d7d8ad99be

— Red Hat

Linux Kernel is vulnerable to a denial of service, caused by a use-after-free flaw in the ext4 filesystem when handling extra inode size for extended attributes. By sending a specially crafted request, a local authenticated attacker could exploit this vulnerability to cause the system to crash.

— IBM

Affected Software

137 affected componentsFixes available
Linux Linux kernel<=5.19
redhat Enterprise Linux=6.0
redhat Enterprise Linux=7.0
redhat Enterprise Linux=8.0
redhat Enterprise Linux=9.0
IBM Security Verify Governance, Identity Manager software component<=ISVG 10.0.2
IBM Security Verify Governance, Identity Manager virtual appliance component<=ISVG 10.0.2
redhat/kernel<6.0
6.0
debian/linux
6.1.176-16.1.190-16.12.107-16.12.113-17.2.12-17.2.13-1
ubuntu/linux-aws<4.4.0-1121.127
4.4.0-1121.127
ubuntu/linux-azure<4.15.0-1157.172~14.04.2
4.15.0-1157.172~14.04.2
ubuntu/linux-lts-xenial<4.4.0-243.277~14.04.1
4.4.0-243.277~14.04.1
ubuntu/linux*
ubuntu/linux<4.4.0-243.277
4.4.0-243.277
ubuntu/linux-aws<4.4.0-1159.174
4.4.0-1159.174
ubuntu/linux-aws-hwe<4.15.0-1143.155~16.04.1
4.15.0-1143.155~16.04.1
ubuntu/linux-azure<4.15.0-1159.174~16.04.1
4.15.0-1159.174~16.04.1
ubuntu/linux-gcp<4.15.0-1138.154~16.04.1
4.15.0-1138.154~16.04.1
ubuntu/linux-hwe<4.15.0-197.208~16.04.1
4.15.0-197.208~16.04.1
ubuntu/linux-kvm<4.4.0-1122.132
4.4.0-1122.132
ubuntu/linux-oracle<4.15.0-1108.119~16.04.1
4.15.0-1108.119~16.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux-fips<4.4.0-1091.98
4.4.0-1091.98
ubuntu/linux-fips*
ubuntu/linux<4.15.0-197.208
4.15.0-197.208
ubuntu/linux-aws<4.15.0-1143.155
4.15.0-1143.155
ubuntu/linux-aws-5.4<5.4.0-1089.97~18.04.1
5.4.0-1089.97~18.04.1
ubuntu/linux-azure-4.15<4.15.0-1157.172
4.15.0-1157.172
ubuntu/linux-azure-5.4<5.4.0-1095.101~18.04.1
5.4.0-1095.101~18.04.1
ubuntu/linux-dell300x<4.15.0-1055.60
4.15.0-1055.60
ubuntu/linux-gcp-4.15<4.15.0-1138.154
4.15.0-1138.154
ubuntu/linux-gcp-5.4<5.4.0-1093.102~18.04.1
5.4.0-1093.102~18.04.1
ubuntu/linux-hwe-5.4<5.4.0-132.148~18.04.1
5.4.0-132.148~18.04.1
ubuntu/linux-ibm-5.4<5.4.0-1037.42~18.04.1
5.4.0-1037.42~18.04.1
ubuntu/linux-kvm<4.15.0-1129.134
4.15.0-1129.134
ubuntu/linux-oracle<4.15.0-1108.119
4.15.0-1108.119
ubuntu/linux-oracle-5.4<5.4.0-1087.96~18.04.1
5.4.0-1087.96~18.04.1
ubuntu/linux-raspi-5.4<5.4.0-1074.85~18.04.1
5.4.0-1074.85~18.04.1
ubuntu/linux-raspi2<4.15.0-1121.129
4.15.0-1121.129
ubuntu/linux-snapdragon<4.15.0-1139.149
4.15.0-1139.149
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<4.15.0-2082.88
4.15.0-2082.88
ubuntu/linux-azure-fips<4.15.0-2066.72
4.15.0-2066.72
ubuntu/linux-fips<4.15.0-1100.111
4.15.0-1100.111
ubuntu/linux-gcp-fips<4.15.0-2047.52
4.15.0-2047.52
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-132.148
5.4.0-132.148
ubuntu/linux-aws<5.4.0-1089.97
5.4.0-1089.97
ubuntu/linux-aws-5.15<5.15.0-1023.27~20.04.1
5.15.0-1023.27~20.04.1
ubuntu/linux-azure<5.4.0-1095.101
5.4.0-1095.101
ubuntu/linux-azure-5.15<5.15.0-1023.29~20.04.1
5.15.0-1023.29~20.04.1
ubuntu/linux-bluefield<5.4.0-1050.56
5.4.0-1050.56
ubuntu/linux-gcp<5.4.0-1093.102
5.4.0-1093.102
ubuntu/linux-gcp-5.15<5.15.0-1022.29~20.04.1
5.15.0-1022.29~20.04.1
ubuntu/linux-gke<5.4.0-1087.94
5.4.0-1087.94
ubuntu/linux-gke-5.15<5.15.0-1020.25~20.04.1
5.15.0-1020.25~20.04.1
ubuntu/linux-gkeop<5.4.0-1057.61
5.4.0-1057.61
ubuntu/linux-gkeop-5.15<5.15.0-1008.12~20.04.1
5.15.0-1008.12~20.04.1
ubuntu/linux-hwe-5.15<5.15.0-53.59~20.04.1
5.15.0-53.59~20.04.1
ubuntu/linux-ibm<5.4.0-1037.42
5.4.0-1037.42
ubuntu/linux-intel-iotg-5.15<5.15.0-1018.23~20.04.1
5.15.0-1018.23~20.04.1
ubuntu/linux-iot<5.4.0-1006.8
5.4.0-1006.8
ubuntu/linux-kvm<5.4.0-1079.85
5.4.0-1079.85
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-53.59~20.04.1
5.15.0-53.59~20.04.1
ubuntu/linux-oracle<5.4.0-1087.96
5.4.0-1087.96
ubuntu/linux-oracle-5.15<5.15.0-1022.28~20.04.1
5.15.0-1022.28~20.04.1
ubuntu/linux-raspi<5.4.0-1074.85
5.4.0-1074.85
ubuntu/linux-riscv-5.15<5.15.0-1023.27~20.04.1
5.15.0-1023.27~20.04.1
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<5.4.0-1089.97+fips1
5.4.0-1089.97+fips1
ubuntu/linux-azure-fips<5.4.0-1095.101+fips1
5.4.0-1095.101+fips1
ubuntu/linux-fips<5.4.0-1065.74
5.4.0-1065.74
ubuntu/linux-gcp-fips<5.4.0-1093.102+fips1
5.4.0-1093.102+fips1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.15.0-53.59
5.15.0-53.59
ubuntu/linux-aws<5.15.0-1023.27
5.15.0-1023.27
ubuntu/linux-azure<5.15.0-1023.29
5.15.0-1023.29
ubuntu/linux-azure-fde<5.15.0-1024.30.1
5.15.0-1024.30.1
ubuntu/linux-gcp<5.15.0-1022.29
5.15.0-1022.29
ubuntu/linux-gke<5.15.0-1020.25
5.15.0-1020.25
ubuntu/linux-gkeop<5.15.0-1008.12
5.15.0-1008.12
ubuntu/linux-ibm<5.15.0-1018.21
5.15.0-1018.21
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-intel-iotg<5.15.0-1018.23
5.15.0-1018.23
ubuntu/linux-kvm<5.15.0-1021.26
5.15.0-1021.26
ubuntu/linux-lowlatency<5.15.0-53.59
5.15.0-53.59
ubuntu/linux-nvidia<5.15.0-1015.15
5.15.0-1015.15
ubuntu/linux-oem-5.17*
ubuntu/linux-oracle<5.15.0-1022.28
5.15.0-1022.28
ubuntu/linux-raspi<5.15.0-1018.20
5.15.0-1018.20
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-realtime<5.15.0-1025.28
5.15.0-1025.28
ubuntu/linux-raspi-realtime*
ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 6.0
  2. 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 6.12.113-1Fixed in 7.2.12-1Fixed in 7.2.13-1
  3. Upgrade

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

    Fixed in 4.4.0-1121.127
  4. Upgrade

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

    Fixed in 4.15.0-1157.172~14.04.2
  5. Upgrade

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

    Fixed in 4.4.0-243.277~14.04.1
  6. Upgrade

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

    Fixed in 4.4.0-243.277
  7. Upgrade

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

    Fixed in 4.4.0-1159.174
  8. Upgrade

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

    Fixed in 4.15.0-1143.155~16.04.1
  9. Upgrade

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

    Fixed in 4.15.0-1159.174~16.04.1
  10. Upgrade

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

    Fixed in 4.15.0-1138.154~16.04.1
  11. Upgrade

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

    Fixed in 4.15.0-197.208~16.04.1
  12. Upgrade

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

    Fixed in 4.4.0-1122.132
  13. Upgrade

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

    Fixed in 4.15.0-1108.119~16.04.1
  14. Upgrade

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

    Fixed in 4.4.0-1091.98
  15. Upgrade

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

    Fixed in 4.15.0-197.208
  16. Upgrade

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

    Fixed in 4.15.0-1143.155
  17. Upgrade

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

    Fixed in 5.4.0-1089.97~18.04.1
  18. Upgrade

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

    Fixed in 4.15.0-1157.172
  19. Upgrade

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

    Fixed in 5.4.0-1095.101~18.04.1
  20. Upgrade

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

    Fixed in 4.15.0-1055.60
  21. Upgrade

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

    Fixed in 4.15.0-1138.154
  22. Upgrade

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

    Fixed in 5.4.0-1093.102~18.04.1
  23. Upgrade

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

    Fixed in 5.4.0-132.148~18.04.1
  24. Upgrade

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

    Fixed in 5.4.0-1037.42~18.04.1
  25. Upgrade

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

    Fixed in 4.15.0-1129.134
  26. Upgrade

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

    Fixed in 4.15.0-1108.119
  27. Upgrade

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

    Fixed in 5.4.0-1087.96~18.04.1
  28. Upgrade

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

    Fixed in 5.4.0-1074.85~18.04.1
  29. Upgrade

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

    Fixed in 4.15.0-1121.129
  30. Upgrade

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

    Fixed in 4.15.0-1139.149
  31. Upgrade

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

    Fixed in 4.15.0-2082.88
  32. Upgrade

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

    Fixed in 4.15.0-2066.72
  33. Upgrade

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

    Fixed in 4.15.0-1100.111
  34. Upgrade

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

    Fixed in 4.15.0-2047.52
  35. Upgrade

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

    Fixed in 5.4.0-132.148
  36. Upgrade

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

    Fixed in 5.4.0-1089.97
  37. Upgrade

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

    Fixed in 5.15.0-1023.27~20.04.1
  38. Upgrade

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

    Fixed in 5.4.0-1095.101
  39. Upgrade

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

    Fixed in 5.15.0-1023.29~20.04.1
  40. Upgrade

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

    Fixed in 5.4.0-1050.56
  41. Upgrade

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

    Fixed in 5.4.0-1093.102
  42. Upgrade

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

    Fixed in 5.15.0-1022.29~20.04.1
  43. Upgrade

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

    Fixed in 5.4.0-1087.94
  44. Upgrade

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

    Fixed in 5.15.0-1020.25~20.04.1
  45. Upgrade

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

    Fixed in 5.4.0-1057.61
  46. Upgrade

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

    Fixed in 5.15.0-1008.12~20.04.1
  47. Upgrade

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

    Fixed in 5.15.0-53.59~20.04.1
  48. Upgrade

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

    Fixed in 5.4.0-1037.42
  49. Upgrade

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

    Fixed in 5.15.0-1018.23~20.04.1
  50. Upgrade

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

    Fixed in 5.4.0-1006.8
  51. Upgrade

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

    Fixed in 5.4.0-1079.85
  52. Upgrade

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

    Fixed in 5.15.0-53.59~20.04.1
  53. Upgrade

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

    Fixed in 5.4.0-1087.96
  54. Upgrade

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

    Fixed in 5.15.0-1022.28~20.04.1
  55. Upgrade

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

    Fixed in 5.4.0-1074.85
  56. Upgrade

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

    Fixed in 5.15.0-1023.27~20.04.1
  57. Upgrade

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

    Fixed in 5.4.0-1089.97+fips1
  58. Upgrade

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

    Fixed in 5.4.0-1095.101+fips1
  59. Upgrade

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

    Fixed in 5.4.0-1065.74
  60. Upgrade

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

    Fixed in 5.4.0-1093.102+fips1
  61. Upgrade

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

    Fixed in 5.15.0-53.59
  62. Upgrade

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

    Fixed in 5.15.0-1023.27
  63. Upgrade

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

    Fixed in 5.15.0-1023.29
  64. Upgrade

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

    Fixed in 5.15.0-1024.30.1
  65. Upgrade

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

    Fixed in 5.15.0-1022.29
  66. Upgrade

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

    Fixed in 5.15.0-1020.25
  67. Upgrade

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

    Fixed in 5.15.0-1008.12
  68. Upgrade

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

    Fixed in 5.15.0-1018.21
  69. Upgrade

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

    Fixed in 5.15.0-1018.23
  70. Upgrade

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

    Fixed in 5.15.0-1021.26
  71. Upgrade

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

    Fixed in 5.15.0-53.59
  72. Upgrade

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

    Fixed in 5.15.0-1015.15
  73. Upgrade

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

    Fixed in 5.15.0-1022.28
  74. Upgrade

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

    Fixed in 5.15.0-1018.20
  75. Upgrade

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

    Fixed in 5.15.0-1025.28
  76. Upgrade

    Upgrade Linux kernel to a version that resolves this vulnerability.

    Patch 67d7d8ad99be

Event History

May 4, 2023
Data Sourced
via Red Hat·10:18 AM
DescriptionSeverityAffected Software
May 8, 2023
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 OSV·12:00 AM
DescriptionSeverityWeakness
Data Sourced
09:15 PM
Description
Data Sourced
via NVD·09:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Nov 11, 2026
Data Sourced
via OSV·09:37 AM
Affected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2023-2513?

CVE-2023-2513 is a use-after-free vulnerability that can lead to potential data corruption and system instability.

2

How do I fix CVE-2023-2513?

To fix CVE-2023-2513, update your Linux kernel to version 6.0 or apply the latest patches from your distribution.

3

Which systems are affected by CVE-2023-2513?

CVE-2023-2513 affects multiple versions of the Linux kernel, specifically versions up to and including 5.19, as well as certain Red Hat Enterprise Linux versions.

4

What components of IBM are impacted by CVE-2023-2513?

CVE-2023-2513 impacts the IBM Security Verify Governance, Identity Manager software and virtual appliance components up to version ISVG 10.0.2.

5

What is the underlying issue in CVE-2023-2513?

The underlying issue in CVE-2023-2513 arises from the Linux kernel's ext4 filesystem improperly handling extra inode sizes for extended attributes.

Company

Resources

Contact

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