Vulnerability Description
The __munlock_pagevec function in mm/mlock.c in the Linux kernel before 4.11.4 allows local users to cause a denial of service (NR_MLOCK accounting corruption) via crafted use of mlockall and munlockall system calls.
CVSS Score
5.5
MEDIUM
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 4.11.4 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=70feeePatchVendor Advisory
- http://www.securityfocus.com/bid/103321Third Party AdvisoryVDB Entry
- https://github.com/torvalds/linux/commit/70feee0e1ef331b22cc51f383d532a0d043fbdcPatchThird Party Advisory
- https://usn.ubuntu.com/3655-1/
- https://usn.ubuntu.com/3655-2/
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.4Release NotesVendor Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=70feeePatchVendor Advisory
- http://www.securityfocus.com/bid/103321Third Party AdvisoryVDB Entry
- https://github.com/torvalds/linux/commit/70feee0e1ef331b22cc51f383d532a0d043fbdcPatchThird Party Advisory
- https://usn.ubuntu.com/3655-1/
- https://usn.ubuntu.com/3655-2/
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.4Release NotesVendor Advisory
FAQ
What is CVE-2017-18221?
CVE-2017-18221 is a vulnerability with a CVSS score of 5.5 (MEDIUM). The __munlock_pagevec function in mm/mlock.c in the Linux kernel before 4.11.4 allows local users to cause a denial of service (NR_MLOCK accounting corruption) via crafted use of mlockall and munlocka...
How severe is CVE-2017-18221?
CVE-2017-18221 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-18221?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.