CVE-2024-26778: fbdev: savage: Error out if pixclock equals zero

Published Apr 3, 2024
·
Updated

In the Linux kernel, the following vulnerability has been resolved:

fbdev: savage: Error out if pixclock equals zero

The userspace program could pass any values to the driver through ioctl() interface. If the driver doesn't check the value of pixclock, it may cause divide-by-zero error.

Although pixclock is checked in savagefbdecodevar(), but it is not checked properly in savagefbprobe(). Fix this by checking whether pixclock is zero in the function savagefbcheckvar() before info->var.pixclock is used as the divisor.

This is similar to CVE-2022-3061 in i740fb which was fixed by commit 15cf0b8.

Affected Software

183 affected componentsFixes available
Linux Linux kernel<4.19.308
Linux Linux kernel>=4.20<5.4.270
Linux Linux kernel>=5.5<5.10.211
Linux Linux kernel>=5.11<5.15.150
Linux Linux kernel>=5.16<6.1.80
Linux Linux kernel>=6.2<6.6.19
Linux Linux kernel>=6.7<6.7.7
Linux Linux kernel=6.8-rc1
Debian Debian Linux=10.0
debian/linux<6.1.82-1
6.1.82-1
debian/linux<6.7.7-1
6.7.7-1
debian/linux<6.7.7-1
6.7.7-1
ubuntu/linux*
ubuntu/linux-aws*
ubuntu/linux-azure*
ubuntu/linux-lts-xenial*
ubuntu/linux*
ubuntu/linux-aws*
ubuntu/linux-aws-hwe*
ubuntu/linux-azure*
ubuntu/linux-gcp*
ubuntu/linux-hwe*
ubuntu/linux-hwe-edge*
ubuntu/linux-kvm*
ubuntu/linux-oracle*
ubuntu/linux-fips*
ubuntu/linux-fips*
ubuntu/linux*
ubuntu/linux-aws*
ubuntu/linux-aws-5.0*
ubuntu/linux-aws-5.3*
ubuntu/linux-aws-5.4<5.4.0-1126.136~18.04.1
5.4.0-1126.136~18.04.1
ubuntu/linux-azure*
ubuntu/linux-azure-4.15*
ubuntu/linux-azure-5.3*
ubuntu/linux-azure-5.4<5.4.0-1131.138~18.04.1
5.4.0-1131.138~18.04.1
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-4.15*
ubuntu/linux-gcp-5.3*
ubuntu/linux-gcp-5.4<5.4.0-1130.139~18.04.1
5.4.0-1130.139~18.04.1
ubuntu/linux-gke-4.15*
ubuntu/linux-gke-5.4*
ubuntu/linux-gkeop-5.4*
ubuntu/linux-hwe*
ubuntu/linux-hwe-5.4<5.4.0-186.206~18.04.1
5.4.0-186.206~18.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux-ibm-5.4<5.4.0-1073.78~18.04.1
5.4.0-1073.78~18.04.1
ubuntu/linux-kvm*
ubuntu/linux-oem*
ubuntu/linux-oracle*
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-oracle-5.4<5.4.0-1125.134~18.04.1
5.4.0-1125.134~18.04.1
ubuntu/linux-raspi-5.4<5.4.0-1110.122~18.04.1
5.4.0-1110.122~18.04.1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-186.206
5.4.0-186.206
ubuntu/linux-aws<5.4.0-1126.136
5.4.0-1126.136
ubuntu/linux-aws-5.15<5.15.0-1063.69~20.04.1
5.15.0-1063.69~20.04.1
ubuntu/linux-azure<5.4.0-1131.138
5.4.0-1131.138
ubuntu/linux-azure-5.15<5.15.0-1065.74~20.04.1
5.15.0-1065.74~20.04.1
ubuntu/linux-bluefield<5.4.0-1086.93
5.4.0-1086.93
ubuntu/linux-gcp<5.4.0-1130.139
5.4.0-1130.139
ubuntu/linux-gcp-5.15<5.15.0-1062.70~20.04.1
5.15.0-1062.70~20.04.1
ubuntu/linux-gkeop<5.4.0-1093.97
5.4.0-1093.97
ubuntu/linux-gkeop-5.15<5.15.0-1046.53~20.04.1
5.15.0-1046.53~20.04.1
ubuntu/linux-hwe-5.15<5.15.0-113.123~20.04.1
5.15.0-113.123~20.04.1
ubuntu/linux-ibm<5.4.0-1073.78
5.4.0-1073.78
ubuntu/linux-ibm-5.15<5.15.0-1057.60~20.04.1
5.15.0-1057.60~20.04.1
ubuntu/linux-intel-iotg-5.15<5.15.0-1058.64~20.04.1
5.15.0-1058.64~20.04.1
ubuntu/linux-iot<5.4.0-1038.39
5.4.0-1038.39
ubuntu/linux-kvm<5.4.0-1114.121
5.4.0-1114.121
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-110.120~20.04.1
5.15.0-110.120~20.04.1
ubuntu/linux-nvidia-tegra-5.15<5.15.0-1027.27~20.04.1
5.15.0-1027.27~20.04.1
ubuntu/linux-oracle<5.4.0-1125.134
5.4.0-1125.134
ubuntu/linux-oracle-5.15<5.15.0-1061.67~20.04.1
5.15.0-1061.67~20.04.1
ubuntu/linux-raspi<5.4.0-1110.122
5.4.0-1110.122
ubuntu/linux-riscv-5.15<5.15.0-1059.63~20.04.1
5.15.0-1059.63~20.04.1
ubuntu/linux-xilinx-zynqmp<5.4.0-1045.49
5.4.0-1045.49
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-azure-fde*
ubuntu/linux-gcp-5.11*
ubuntu/linux-gcp-5.13*
ubuntu/linux-gcp-5.8*
ubuntu/linux-gke*
ubuntu/linux-gke-5.15*
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<5.4.0-1126.136+fips2
5.4.0-1126.136+fips2
ubuntu/linux-azure-fips<5.4.0-1131.138+fips1
5.4.0-1131.138+fips1
ubuntu/linux-fips<5.4.0-1100.110
5.4.0-1100.110
ubuntu/linux-gcp-fips<5.4.0-1130.139+fips1
5.4.0-1130.139+fips1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.15.0-112.122
5.15.0-112.122
ubuntu/linux-allwinner-5.19*
ubuntu/linux-aws<5.15.0-1063.69
5.15.0-1063.69
ubuntu/linux-aws-5.19*
ubuntu/linux-aws-6.2*
ubuntu/linux-aws-6.5*
ubuntu/linux-azure<5.15.0-1066.75
5.15.0-1066.75
ubuntu/linux-azure-5.19*
ubuntu/linux-azure-6.2*
ubuntu/linux-azure-6.5*
ubuntu/linux-azure-fde<5.15.0-1067.76.1
5.15.0-1067.76.1
ubuntu/linux-azure-fde-5.19*
ubuntu/linux-azure-fde-6.2*
ubuntu/linux-gcp<5.15.0-1062.70
5.15.0-1062.70
ubuntu/linux-gcp-5.19*
ubuntu/linux-gcp-6.2*
ubuntu/linux-gcp-6.5*
ubuntu/linux-gke<5.15.0-1060.66
5.15.0-1060.66
ubuntu/linux-gkeop<5.15.0-1046.53
5.15.0-1046.53
ubuntu/linux-hwe-5.19*
ubuntu/linux-hwe-6.2*
ubuntu/linux-hwe-6.5*
ubuntu/linux-ibm<5.15.0-1056.59
5.15.0-1056.59
ubuntu/linux-intel-iotg<5.15.0-1058.64
5.15.0-1058.64
ubuntu/linux-kvm<5.15.0-1060.65
5.15.0-1060.65
ubuntu/linux-lowlatency<5.15.0-110.120
5.15.0-110.120
ubuntu/linux-lowlatency-hwe-5.19*
ubuntu/linux-lowlatency-hwe-6.2*
ubuntu/linux-lowlatency-hwe-6.5*
ubuntu/linux-nvidia<5.15.0-1058.59
5.15.0-1058.59
ubuntu/linux-nvidia-6.2*
ubuntu/linux-nvidia-6.5*
ubuntu/linux-nvidia-tegra<5.15.0-1026.26
5.15.0-1026.26
ubuntu/linux-nvidia-tegra-igx<5.15.0-1015.15
5.15.0-1015.15
ubuntu/linux-oem-5.17*
ubuntu/linux-oem-6.0*
ubuntu/linux-oem-6.1*
ubuntu/linux-oem-6.5*
ubuntu/linux-oracle<5.15.0-1061.67
5.15.0-1061.67
ubuntu/linux-oracle-6.5*
ubuntu/linux-raspi<5.15.0-1058.61
5.15.0-1058.61
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.19*
ubuntu/linux-riscv-6.5*
ubuntu/linux-starfive-5.19*
ubuntu/linux-starfive-6.2*
ubuntu/linux-starfive-6.5*
ubuntu/linux-xilinx-zynqmp<5.15.0-1030.34
5.15.0-1030.34
ubuntu/linux-bluefield<5.15.0-1044.46
5.15.0-1044.46
ubuntu/linux-intel-iot-realtime<5.15.0-1056.58
5.15.0-1056.58
ubuntu/linux-realtime<5.15.0-1064.72
5.15.0-1064.72
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux-aws-fips<5.15.0-1063.69+fips1
5.15.0-1063.69+fips1
ubuntu/linux-azure-fips<5.15.0-1065.74+fips1
5.15.0-1065.74+fips1
ubuntu/linux-fips<5.15.0-111.121+fips1
5.15.0-111.121+fips1
ubuntu/linux-gcp-fips<5.15.0-1062.70+fips1
5.15.0-1062.70+fips1
ubuntu/linux-raspi-realtime<6.8.0-2001.1
6.8.0-2001.1
ubuntu/linux-vmware*
debian/linux
6.1.176-16.1.190-16.12.107-16.12.116-17.2.15-17.3.4-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 6.1.82-1
  2. Upgrade

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

    Fixed in 6.7.7-1
  3. Upgrade

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

    Fixed in 5.4.0-1126.136~18.04.1
  4. Upgrade

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

    Fixed in 5.4.0-1131.138~18.04.1
  5. Upgrade

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

    Fixed in 5.4.0-1130.139~18.04.1
  6. Upgrade

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

    Fixed in 5.4.0-186.206~18.04.1
  7. Upgrade

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

    Fixed in 5.4.0-1073.78~18.04.1
  8. Upgrade

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

    Fixed in 5.4.0-1125.134~18.04.1
  9. Upgrade

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

    Fixed in 5.4.0-1110.122~18.04.1
  10. Upgrade

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

    Fixed in 5.4.0-186.206
  11. Upgrade

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

    Fixed in 5.4.0-1126.136
  12. Upgrade

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

    Fixed in 5.15.0-1063.69~20.04.1
  13. Upgrade

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

    Fixed in 5.4.0-1131.138
  14. Upgrade

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

    Fixed in 5.15.0-1065.74~20.04.1
  15. Upgrade

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

    Fixed in 5.4.0-1086.93
  16. Upgrade

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

    Fixed in 5.4.0-1130.139
  17. Upgrade

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

    Fixed in 5.15.0-1062.70~20.04.1
  18. Upgrade

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

    Fixed in 5.4.0-1093.97
  19. Upgrade

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

    Fixed in 5.15.0-1046.53~20.04.1
  20. Upgrade

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

    Fixed in 5.15.0-113.123~20.04.1
  21. Upgrade

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

    Fixed in 5.4.0-1073.78
  22. Upgrade

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

    Fixed in 5.15.0-1057.60~20.04.1
  23. Upgrade

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

    Fixed in 5.15.0-1058.64~20.04.1
  24. Upgrade

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

    Fixed in 5.4.0-1038.39
  25. Upgrade

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

    Fixed in 5.4.0-1114.121
  26. Upgrade

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

    Fixed in 5.15.0-110.120~20.04.1
  27. Upgrade

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

    Fixed in 5.15.0-1027.27~20.04.1
  28. Upgrade

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

    Fixed in 5.4.0-1125.134
  29. Upgrade

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

    Fixed in 5.15.0-1061.67~20.04.1
  30. Upgrade

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

    Fixed in 5.4.0-1110.122
  31. Upgrade

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

    Fixed in 5.15.0-1059.63~20.04.1
  32. Upgrade

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

    Fixed in 5.4.0-1045.49
  33. Upgrade

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

    Fixed in 5.4.0-1126.136+fips2
  34. Upgrade

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

    Fixed in 5.4.0-1131.138+fips1
  35. Upgrade

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

    Fixed in 5.4.0-1100.110
  36. Upgrade

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

    Fixed in 5.4.0-1130.139+fips1
  37. Upgrade

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

    Fixed in 5.15.0-112.122
  38. Upgrade

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

    Fixed in 5.15.0-1063.69
  39. Upgrade

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

    Fixed in 5.15.0-1066.75
  40. Upgrade

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

    Fixed in 5.15.0-1067.76.1
  41. Upgrade

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

    Fixed in 5.15.0-1062.70
  42. Upgrade

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

    Fixed in 5.15.0-1060.66
  43. Upgrade

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

    Fixed in 5.15.0-1046.53
  44. Upgrade

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

    Fixed in 5.15.0-1056.59
  45. Upgrade

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

    Fixed in 5.15.0-1058.64
  46. Upgrade

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

    Fixed in 5.15.0-1060.65
  47. Upgrade

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

    Fixed in 5.15.0-110.120
  48. Upgrade

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

    Fixed in 5.15.0-1058.59
  49. Upgrade

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

    Fixed in 5.15.0-1026.26
  50. Upgrade

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

    Fixed in 5.15.0-1015.15
  51. Upgrade

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

    Fixed in 5.15.0-1061.67
  52. Upgrade

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

    Fixed in 5.15.0-1058.61
  53. Upgrade

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

    Fixed in 5.15.0-1030.34
  54. Upgrade

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

    Fixed in 5.15.0-1044.46
  55. Upgrade

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

    Fixed in 5.15.0-1056.58
  56. Upgrade

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

    Fixed in 5.15.0-1064.72
  57. Upgrade

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

    Fixed in 5.15.0-1063.69+fips1
  58. Upgrade

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

    Fixed in 5.15.0-1065.74+fips1
  59. Upgrade

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

    Fixed in 5.15.0-111.121+fips1
  60. Upgrade

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

    Fixed in 5.15.0-1062.70+fips1
  61. Upgrade

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

    Fixed in 6.8.0-2001.1
  62. 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 6.12.116-1Fixed in 7.2.15-1Fixed in 7.3.4-1
  63. Upgrade

    Upgrade Linux kernel fbdev savage to a version that resolves this vulnerability.

    Patch 15cf0b8

Event History

Apr 3, 2024
CVE Published
via MITRE·05:01 PM
Data Sourced
via MITRE·05:01 PM
Description
Data Sourced
via OSV·05:15 PM
DescriptionSeverityAffected Software
Event
via OSV·05:15 PM

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2024-26778?

CVE-2024-26778 has been classified as a security vulnerability that can lead to potential system crashes due to a divide-by-zero error.

2

How do I fix CVE-2024-26778?

To resolve CVE-2024-26778, users should upgrade to the fixed versions of the Linux kernel available, including versions 5.10.223-1, 5.10.226-1, 6.1.119-1, 6.1.123-1, 6.12.10-1, and 6.12.11-1.

3

Which Linux distributions are affected by CVE-2024-26778?

CVE-2024-26778 primarily affects Debian-based Linux distributions that utilize the vulnerable versions of the Linux kernel.

4

What happens if CVE-2024-26778 is exploited?

If exploited, CVE-2024-26778 can cause the userspace program to crash, potentially disrupting services and impacting system stability.

5

Is there a workaround for CVE-2024-26778?

Currently, the best course of action is to upgrade the affected kernel versions, as no official workarounds have been published.

Company

Resources

Contact

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