Lucene search

LinuxCVE-2024-43854

HistoryAug 17, 2024 - 10:15 a.m.

CVE-2024-43854

2024-08-1710:15:10

CWE-401

Linux

web.nvd.nist.gov

linux kernel

integrity buffer

vulnerability

media

metadata

kmalloc

kernel memory

pi metadata

non-pi metadata

__gfp_zero flag

allocations

writes

cve-2024-43854

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

AI Score

6.7

Confidence

Low

EPSS

Percentile

5.0%

JSON

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

block: initialize integrity buffer to zero before writing it to media

Metadata added by bio_integrity_prep is using plain kmalloc, which leads
to random kernel memory being written media. For PI metadata this is
limited to the app tag that isn’t used by kernel generated metadata,
but for non-PI metadata the entire buffer leaks kernel memory.

Fix this by adding the __GFP_ZERO flag to allocations for writes.

Affected configurations

Nvd

Vulners

Node

linuxlinux_kernelRange2.6.27–5.15.165

linuxlinux_kernelRange5.16–6.1.103

linuxlinux_kernelRange6.2–6.6.44

linuxlinux_kernelRange6.7–6.10.3

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": [
      "block/bio-integrity.c"
    ],
    "versions": [
      {
        "version": "7ba1ba12eeef",
        "lessThan": "9f4af4cf08f9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7ba1ba12eeef",
        "lessThan": "129f95948a96",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7ba1ba12eeef",
        "lessThan": "3fd11fe4f207",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7ba1ba12eeef",
        "lessThan": "cf6b45ea7a8d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7ba1ba12eeef",
        "lessThan": "d418313bd8f5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7ba1ba12eeef",
        "lessThan": "23a19655fb56",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7ba1ba12eeef",
        "lessThan": "ebc0e91ba76d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7ba1ba12eeef",
        "lessThan": "899ee2c3829c",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "block/bio-integrity.c"
    ],
    "versions": [
      {
        "version": "2.6.27",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.27",
        "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": "5.15.165",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.103",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.44",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10.3",
        "lessThanOrEqual": "6.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.11",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]