CVE-2024-35800 efi: fix panic in kdump kernel

2024-05-1713:23:10

Linux

github.com

linux kernel

vulnerability

efi

kdump kernel

qemu

ovmf firmware

6.4 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.6%

JSON

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

efi: fix panic in kdump kernel

Check if get_next_variable() is actually valid pointer before
calling it. In kdump kernel this method is set to NULL that causes
panic during the kexec-ed kernel boot.

Tested with QEMU and OVMF firmware.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/firmware/efi/efi.c"
    ],
    "versions": [
      {
        "version": "a8901f331b8b",
        "lessThan": "b9d103aca85f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bad267f9e18f",
        "lessThan": "9114ba998750",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bad267f9e18f",
        "lessThan": "7784135f134c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bad267f9e18f",
        "lessThan": "090d2b4515ad",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bad267f9e18f",
        "lessThan": "62b71cd73d41",
        "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/firmware/efi/efi.c"
    ],
    "versions": [
      {
        "version": "6.3",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.3",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.84",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.24",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7.12",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8.3",
        "lessThanOrEqual": "6.8.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]