Vulnerability Details 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().
Exploit prediction scoring system (EPSS) score
EPSS Score 0.012
EPSS Ranking 77.6%
CVSS Severity
CVSS v3 Score 8.1
CVSS v2 Score 9.3
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=384632e67e0829deb8015ee6ad916b180049d252
- http://www.securityfocus.com/bid/102516
- https://access.redhat.com/errata/RHSA-2018:0676
- https://access.redhat.com/errata/RHSA-2018:1062
- https://access.redhat.com/security/cve/CVE-2017-15126
- https://bugzilla.redhat.com/show_bug.cgi?id=1523481
- https://github.com/torvalds/linux/commit/384632e67e0829deb8015ee6ad916b180049d252
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=384632e67e0829deb8015ee6ad916b180049d252
- http://www.securityfocus.com/bid/102516
- https://access.redhat.com/errata/RHSA-2018:0676
- https://access.redhat.com/errata/RHSA-2018:1062
- https://access.redhat.com/security/cve/CVE-2017-15126
- https://bugzilla.redhat.com/show_bug.cgi?id=1523481
- https://github.com/torvalds/linux/commit/384632e67e0829deb8015ee6ad916b180049d252
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6
Products affected by CVE-2017-15126
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cpe:2.3:o:linux:linux_kernel:4.11
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cpe:2.3:o:linux:linux_kernel:4.11.1
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cpe:2.3:o:linux:linux_kernel:4.11.10
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cpe:2.3:o:linux:linux_kernel:4.11.11
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cpe:2.3:o:linux:linux_kernel:4.11.12
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cpe:2.3:o:linux:linux_kernel:4.11.2
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cpe:2.3:o:linux:linux_kernel:4.11.3
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cpe:2.3:o:linux:linux_kernel:4.11.4
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cpe:2.3:o:linux:linux_kernel:4.11.5
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cpe:2.3:o:linux:linux_kernel:4.11.6
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cpe:2.3:o:linux:linux_kernel:4.11.7
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cpe:2.3:o:linux:linux_kernel:4.11.8
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cpe:2.3:o:linux:linux_kernel:4.11.9
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cpe:2.3:o:linux:linux_kernel:4.12
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cpe:2.3:o:linux:linux_kernel:4.12.1
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cpe:2.3:o:linux:linux_kernel:4.12.10
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cpe:2.3:o:linux:linux_kernel:4.12.11
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cpe:2.3:o:linux:linux_kernel:4.12.12
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cpe:2.3:o:linux:linux_kernel:4.12.13
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cpe:2.3:o:linux:linux_kernel:4.12.14
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cpe:2.3:o:linux:linux_kernel:4.12.2
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cpe:2.3:o:linux:linux_kernel:4.12.3
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cpe:2.3:o:linux:linux_kernel:4.12.4
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cpe:2.3:o:linux:linux_kernel:4.12.5
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cpe:2.3:o:linux:linux_kernel:4.12.6
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cpe:2.3:o:linux:linux_kernel:4.12.7
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cpe:2.3:o:linux:linux_kernel:4.12.8
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cpe:2.3:o:linux:linux_kernel:4.12.9
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cpe:2.3:o:linux:linux_kernel:4.13
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cpe:2.3:o:linux:linux_kernel:4.13.1
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cpe:2.3:o:linux:linux_kernel:4.13.2
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cpe:2.3:o:linux:linux_kernel:4.13.3
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cpe:2.3:o:linux:linux_kernel:4.13.4
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cpe:2.3:o:linux:linux_kernel:4.13.5