CVE-2017-15127
First published: Tue Dec 12 2017(Updated: )
A flaw was found in the hugetlb_mcopy_atomic_pte function in mm/hugetlb.c in the Linux kernel before 4.13. A superfluous implicit page unlock for VM_SHARED hugetlbfs mapping could trigger a local denial of service (BUG).
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <4.13 | |
| Redhat Enterprise Linux | =7.0 | |
| Redhat Enterprise Mrg | =2.0 |
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Reference Links
- https://marc.info/?l=linux-mm&m=150169274317930
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5af10dfd0afc559bb4b0f7e3e8227a1578333995
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1545040
- https://access.redhat.com/errata/RHSA-2018:0676
- https://access.redhat.com/errata/RHSA-2018:1062
- https://bugzilla.redhat.com/show_bug.cgi?id=1525218
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5af10dfd0afc559bb4b0f7e3e8227a1578333995
- http://www.securityfocus.com/bid/102517
- https://access.redhat.com/security/cve/CVE-2017-15127
- https://github.com/torvalds/linux/commit/5af10dfd0afc559bb4b0f7e3e8227a1578333995
Frequently Asked Questions
What is CVE-2017-15127?
CVE-2017-15127 is a vulnerability found in the hugetlb_mcopy_atomic_pte function in the Linux kernel before 4.13.
How does CVE-2017-15127 impact Linux kernel?
CVE-2017-15127 could trigger a local denial of service (BUG) in the Linux kernel before 4.13.
Which software versions are affected by CVE-2017-15127?
Linux Kernel before version 4.13 and Redhat Enterprise Linux 7.0 and Redhat Enterprise MRG 2.0 are affected by CVE-2017-15127.
How severe is the vulnerability CVE-2017-15127?
The severity of CVE-2017-15127 is medium, with a CVSS base score of 5.5.
How can I fix CVE-2017-15127?
To fix CVE-2017-15127, users should update their Linux kernel to version 4.13 or later.
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