CVE-2017-15126

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().

CVSS v3 8.1 HIGH
CVSS v2.0 9.3 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.3^/10

CVSS v2.0 : HIGH

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

Exploitability : 8.6 / Impact : 10.0

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=384632e67e0829deb8015ee6ad916b180049d252	Vendor Advisory
http://www.securityfocus.com/bid/102516	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0676	Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1062	Third Party Advisory
https://access.redhat.com/security/cve/CVE-2017-15126	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1523481	Issue Tracking Third Party Advisory
https://github.com/torvalds/linux/commit/384632e67e0829deb8015ee6ad916b180049d252	Third Party Advisory
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2018-01-14 06:29

Updated : 2024-02-05 19:52

NVD link : CVE-2017-15126

Mitre link : CVE-2017-15126

CVE.ORG link : CVE-2017-15126

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-416

Use After Free

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