CVE-2024-46780

2024-09-1808:15:05

Linux

web.nvd.nist.gov

linux kernel

nilfs2

sysfs

superblock

mutual exclusion

memory access

AI Score

6.7

Confidence

Low

EPSS

Percentile

13.8%

JSON

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

nilfs2: protect references to superblock parameters exposed in sysfs

The superblock buffers of nilfs2 can not only be overwritten at runtime
for modifications/repairs, but they are also regularly swapped, replaced
during resizing, and even abandoned when degrading to one side due to
backing device issues. So, accessing them requires mutual exclusion using
the reader/writer semaphore “nilfs->ns_sem”.

Some sysfs attribute show methods read this superblock buffer without the
necessary mutual exclusion, which can cause problems with pointer
dereferencing and memory access, so fix it.

Affected configurations

Vulners

Node

linuxlinux_kernelRange3.17–4.19.322

linuxlinux_kernelRange4.20.0–5.4.284

linuxlinux_kernelRange5.5.0–5.10.226

linuxlinux_kernelRange5.11.0–5.15.167

linuxlinux_kernelRange5.16.0–6.1.110

linuxlinux_kernelRange6.2.0–6.6.51

linuxlinux_kernelRange6.7.0–6.10.10

linuxlinux_kernelRange6.11.0≥

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/nilfs2/sysfs.c"
    ],
    "versions": [
      {
        "version": "da7141fb78db",
        "lessThan": "b90beafac059",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "da7141fb78db",
        "lessThan": "ba97ba173f96",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "da7141fb78db",
        "lessThan": "157c0d94b4c4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "da7141fb78db",
        "lessThan": "b14e7260bb69",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "da7141fb78db",
        "lessThan": "19cfeba0e4b8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "da7141fb78db",
        "lessThan": "8c6e43b3d5f1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "da7141fb78db",
        "lessThan": "962562d4c70c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "da7141fb78db",
        "lessThan": "683408258917",
        "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/nilfs2/sysfs.c"
    ],
    "versions": [
      {
        "version": "3.17",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.17",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.322",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.284",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.226",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.167",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.110",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.51",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10.10",
        "lessThanOrEqual": "6.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.11",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]