Vulnerability Description
Race condition in the store_int_with_restart() function in arch/x86/kernel/cpu/mcheck/mce.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (panic) by leveraging root access to write to the check_interval file in a /sys/devices/system/machinecheck/machinecheck<cpu number> directory. NOTE: a third party has indicated that this report is not security relevant
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 4.15.7 |
| Canonical | Ubuntu Linux | 14.04 |
| Debian | Debian Linux | 7.0 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/103356Third Party AdvisoryVDB Entry
- https://bugzilla.suse.com/show_bug.cgi?id=1084755Issue TrackingThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=b3b7c4795PatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.htmlThird Party Advisory
- https://lkml.org/lkml/2018/3/2/970PatchThird Party Advisory
- https://usn.ubuntu.com/3654-1/Third Party Advisory
- https://usn.ubuntu.com/3654-2/Third Party Advisory
- https://usn.ubuntu.com/3656-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4187Third Party Advisory
- https://www.debian.org/security/2018/dsa-4188Third Party Advisory
- http://www.securityfocus.com/bid/103356Third Party AdvisoryVDB Entry
- https://bugzilla.suse.com/show_bug.cgi?id=1084755Issue TrackingThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=b3b7c4795PatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.htmlThird Party Advisory
- https://lkml.org/lkml/2018/3/2/970PatchThird Party Advisory
FAQ
What is CVE-2018-7995?
CVE-2018-7995 is a vulnerability with a CVSS score of 4.7 (MEDIUM). Race condition in the store_int_with_restart() function in arch/x86/kernel/cpu/mcheck/mce.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (panic) by leveraging roo...
How severe is CVE-2018-7995?
CVE-2018-7995 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-7995?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Canonical Ubuntu Linux, Debian Debian Linux.