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RedhatCVE-2017-15126

HistoryJan 14, 2018 - 6:29 a.m.

CVE-2017-15126

2018-01-1406:29:00

CWE-119

CWE-416

redhat

web.nvd.nist.gov

cve-2017-15126

linux kernel

use-after-free flaw

userfaultfd.c

fork failure

event messages

CVSS2

9.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS3

8.1

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.1

Confidence

High

EPSS

0.025

Percentile

90.2%

JSON

A use-after-free flaw was found in fs/userfaultfd.c in the Linux kernel before 4.13.6. The issue is related to the handling of fork failure when dealing with event messages. Failure to fork correctly can lead to a situation where a fork event will be removed from an already freed list of events with userfaultfd_ctx_put().

Affected configurations

Nvd

Vulners

Node

linuxlinux_kernelRange4.11–4.13.6

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 Kernel before 4.13.6",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Linux Kernel before 4.13.6"
      }
    ]
  }
]