CVE-2024-39475 fbdev: savage: Handle err return when savagefb_check_var failed

2024-07-0506:55:05

Linux

www.cve.org

linux kernel

cve-2024-39475

fbdev

savagefb_check_var

divide-by-zero

error handling

EPSS

Percentile

5.1%

JSON

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

fbdev: savage: Handle err return when savagefb_check_var failed

The commit 04e5eac8f3ab(“fbdev: savage: Error out if pixclock equals zero”)
checks the value of pixclock to avoid divide-by-zero error. However
the function savagefb_probe doesn’t handle the error return of
savagefb_check_var. When pixclock is 0, it will cause divide-by-zero error.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/video/fbdev/savage/savagefb_driver.c"
    ],
    "versions": [
      {
        "version": "224453de8505",
        "lessThan": "be754cbd77ea",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "84dce0f6a4cc",
        "lessThan": "86435f39c189",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "512ee6d6041e",
        "lessThan": "32f92b0078eb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8c54acf33e5a",
        "lessThan": "4b2c67e30b4e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "070398d32c5f",
        "lessThan": "edaa57480b87",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bc3c2e58d73b",
        "lessThan": "b8385ff814ca",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "04e5eac8f3ab",
        "lessThan": "5f446859bfa4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "04e5eac8f3ab",
        "lessThan": "6ad959b6703e",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/video/fbdev/savage/savagefb_driver.c"
    ],
    "versions": [
      {
        "version": "6.8",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.8",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.316",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.278",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.219",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.161",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.94",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.34",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9.5",
        "lessThanOrEqual": "6.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]