CVE-2023-52681 efivarfs: Free s_fs_info on unmount

2024-05-1714:24:44

Linux

www.cve.org

linux kernel

vulnerability

efivarfs

fs context

superblock

6.5 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.5%

JSON

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

efivarfs: Free s_fs_info on unmount

Now that we allocate a s_fs_info struct on fs context creation, we
should ensure that we free it again when the superblock goes away.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/efivarfs/super.c"
    ],
    "versions": [
      {
        "version": "5329aa5101f7",
        "lessThan": "ea6b597fcaca",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5329aa5101f7",
        "lessThan": "48be1364dd38",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5329aa5101f7",
        "lessThan": "92be3095c6ca",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5329aa5101f7",
        "lessThan": "547713d502f7",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/efivarfs/super.c"
    ],
    "versions": [
      {
        "version": "6.7",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.7",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.75",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.14",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7.2",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]