CVE-2024-36931

2024-05-3016:15:16

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

web.nvd.nist.gov

linux kernel

vulnerability

resolved

s390/cio

buffer

oob read

memdup_user_nul

nvd

6.7 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.7%

JSON

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

s390/cio: Ensure the copied buf is NUL terminated

Currently, we allocate a lbuf-sized kernel buffer and copy lbuf from
userspace to that buffer. Later, we use scanf on this buffer but we don’t
ensure that the string is terminated inside the buffer, this can lead to
OOB read when using scanf. Fix this issue by using memdup_user_nul instead.

Affected configurations

Vulners

Node

linuxlinux_kernelRange5.13–5.15.159

linuxlinux_kernelRange5.16.0–6.1.91

linuxlinux_kernelRange6.2.0–6.6.31

linuxlinux_kernelRange6.7.0–6.8.10

linuxlinux_kernelRange6.9.0≥

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/s390/cio/cio_inject.c"
    ],
    "versions": [
      {
        "version": "a4f17cc72671",
        "lessThan": "c9d48ce16330",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a4f17cc72671",
        "lessThan": "10452edd175f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a4f17cc72671",
        "lessThan": "84b38f488366",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a4f17cc72671",
        "lessThan": "06759ebaf75c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a4f17cc72671",
        "lessThan": "da7c622cddd4",
        "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/s390/cio/cio_inject.c"
    ],
    "versions": [
      {
        "version": "5.13",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.13",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.159",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.91",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.31",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8.10",
        "lessThanOrEqual": "6.8.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]