CVE-2017-15126

HighCVSS 8.1/10Last modified Jun 17, 2026

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().

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-119 CWE-416

Affected software

Vendor	Product	Versions
n/a	Linux Kernel before 4.13.6	Linux Kernel before 4.13.6

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=384632e67e0829deb8015ee6ad916b180049d252Vendor Advisory
http://www.securityfocus.com/bid/102516Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:0676Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1062Third Party Advisory
https://access.redhat.com/security/cve/CVE-2017-15126Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1523481Issue Tracking, Third Party Advisory
https://github.com/torvalds/linux/commit/384632e67e0829deb8015ee6ad916b180049d252Third Party Advisory
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6Vendor Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=384632e67e0829deb8015ee6ad916b180049d252Vendor Advisory
http://www.securityfocus.com/bid/102516Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:0676Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1062Third Party Advisory
https://access.redhat.com/security/cve/CVE-2017-15126Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1523481Issue Tracking, Third Party Advisory
https://github.com/torvalds/linux/commit/384632e67e0829deb8015ee6ad916b180049d252Third Party Advisory
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6Vendor Advisory

Timeline

Published: Jan 14, 2018
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2017

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