Vulnerability Description
Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 4.4.221 |
| Canonical | Ubuntu Linux | 14.04 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d72Vendor Advisory
- http://www.openwall.com/lists/oss-security/2016/04/01/4Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/85798Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1035455Third Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-3005-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3006-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3007-1Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1842Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2077Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2669Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1323577Issue TrackingThird Party Advisory
- https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00011.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00013.htmlThird Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d72Vendor Advisory
FAQ
What is CVE-2015-8839?
CVE-2015-8839 is a vulnerability with a CVSS score of 5.1 (MEDIUM). Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated w...
How severe is CVE-2015-8839?
CVE-2015-8839 has been rated MEDIUM with a CVSS base score of 5.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-8839?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Canonical Ubuntu Linux.