CVE-2017-15126

CVSS V2 High 9.3 CVSS V3 High 8.1
Description
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().
Overview
  • CVE ID
  • CVE-2017-15126
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2018-01-14T06:29:00
  • Last Modified Date
  • 2023-02-12T23:28:49
Weakness Enumerations
CWE URL
CWE-416 http://cwe.mitre.org/data/definitions/416.html
CWE-119 http://cwe.mitre.org/data/definitions/119.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:linux:linux_kernel:4.13.6:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:C/I:C/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 9.3
  • Severity
  • HIGH
  • Exploitability Score
  • 8.6
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 8.1
  • Base Severity
  • HIGH
  • Exploitability Score
  • 2.2
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6 Vendor Advisory
https://github.com/torvalds/linux/commit/384632e67e0829deb8015ee6ad916b180049d252 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1523481 Issue Tracking Third Party Advisory
https://access.redhat.com/security/cve/CVE-2017-15126 Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=384632e67e0829deb8015ee6ad916b180049d252 Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:1062
https://access.redhat.com/errata/RHSA-2018:0676
http://www.securityfocus.com/bid/102516
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2017-15126
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15126
History
Created Old Value New Value Data Type Notes
2022-05-10 18:44:14 Added to TrackCVE
2022-12-03 01:04:33 2018-01-14T06:29Z 2018-01-14T06:29:00 CVE Published Date updated
2022-12-03 01:04:33 2018-05-07T01:29:00 CVE Modified Date updated
2022-12-03 01:04:33 Undergoing Analysis Vulnerability Status updated
2023-01-19 17:06:47 2023-01-19T16:08:07 CVE Modified Date updated
2023-01-19 17:06:47 Undergoing Analysis Analyzed Vulnerability Status updated
2023-01-19 17:06:47 Weakness Enumeration update
2023-02-02 16:07:10 2023-02-02T15:17:19 CVE Modified Date updated
2023-02-02 16:07:10 Analyzed Modified Vulnerability Status updated
2023-02-02 16:07:11 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(). A flaw was found in the Linux kernel's handling of fork failure when dealing with event messages in the userfaultfd code. Failure to fork correctly can create a fork event that will be removed from an already freed list of events. Description updated
2023-02-13 00:07:10 2023-02-12T23:28:49 CVE Modified Date updated
2023-02-13 00:07:10 A flaw was found in the Linux kernel's handling of fork failure when dealing with event messages in the userfaultfd code. Failure to fork correctly can create a fork event that will be removed from an already freed list of events. 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(). Description updated