CVE-2024-26981

2024-05-0106:15:15

416baaa9-dc9f-4396-8d5f-8c081fb06d67

web.nvd.nist.gov

linux kernel

nilfs2

vulnerability

fix

oob error

array resizing

6.1 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

13.1%

JSON

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

nilfs2: fix OOB in nilfs_set_de_type

The size of the nilfs_type_by_mode array in the fs/nilfs2/dir.c file is
defined as “S_IFMT >> S_SHIFT”, but the nilfs_set_de_type() function,
which uses this array, specifies the index to read from the array in the
same way as “(mode & S_IFMT) >> S_SHIFT”.

static void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode
*inode)
{
umode_t mode = inode->i_mode;

de-&gt;file_type = nilfs_type_by_mode[(mode & S_IFMT)&gt;&gt;S_SHIFT]; // oob

}

However, when the index is determined this way, an out-of-bounds (OOB)
error occurs by referring to an index that is 1 larger than the array size
when the condition “mode & S_IFMT == S_IFMT” is satisfied. Therefore, a
patch to resize the nilfs_type_by_mode array should be applied to prevent
OOB errors.

Affected configurations

Vulners

Node

linuxlinux_kernelRange2.6.30–4.19.313

linuxlinux_kernelRange4.20.0–5.4.275

linuxlinux_kernelRange5.5.0–5.10.216

linuxlinux_kernelRange5.11.0–5.15.157

linuxlinux_kernelRange5.16.0–6.1.88

linuxlinux_kernelRange6.2.0–6.6.29

linuxlinux_kernelRange6.7.0–6.8.8

linuxlinux_kernelRange6.9.0≥

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

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
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/dir.c"
    ],
    "versions": [
      {
        "version": "2ba466d74ed7",
        "lessThan": "054f29e9ca05",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2ba466d74ed7",
        "lessThan": "90f43980ea6b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2ba466d74ed7",
        "lessThan": "7061c7efbb9e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2ba466d74ed7",
        "lessThan": "bdbe483da21f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2ba466d74ed7",
        "lessThan": "897ac5306bbe",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2ba466d74ed7",
        "lessThan": "2382eae66b19",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2ba466d74ed7",
        "lessThan": "90823f8d9ecc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2ba466d74ed7",
        "lessThan": "c4a7dc9523b5",
        "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/dir.c"
    ],
    "versions": [
      {
        "version": "2.6.30",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.30",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.313",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.275",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.216",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.157",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.88",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.29",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8.8",
        "lessThanOrEqual": "6.8.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]