Vulnerability Description
In the Linux kernel before 4.17, a local attacker able to set attributes on an xfs filesystem could make this filesystem non-operational until the next mount by triggering an unchecked error condition during an xfs attribute change, because xfs_attr_shortform_addname in fs/xfs/libxfs/xfs_attr.c mishandles ATTR_REPLACE operations with conversion of an attr from short to long form.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 4.17 |
| Canonical | Ubuntu Linux | 12.04 |
| Debian | Debian Linux | 8.0 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7b3846PatchVendor Advisory
- http://www.securityfocus.com/bid/105753Third Party AdvisoryVDB Entry
- https://bugzilla.kernel.org/show_bug.cgi?id=199119ExploitIssue TrackingVendor Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1105025Issue TrackingThird Party Advisory
- https://github.com/torvalds/linux/commit/7b38460dc8e4eafba06c78f8e37099d3b34d473PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00017.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00034.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/04/msg00004.htmlMailing ListThird Party Advisory
- https://usn.ubuntu.com/3847-1/Third Party Advisory
- https://usn.ubuntu.com/3847-2/Third Party Advisory
- https://usn.ubuntu.com/3847-3/Third Party Advisory
- https://usn.ubuntu.com/3848-1/Third Party Advisory
- https://usn.ubuntu.com/3848-2/Third Party Advisory
- https://usn.ubuntu.com/3849-1/Third Party Advisory
- https://usn.ubuntu.com/3849-2/Third Party Advisory
FAQ
What is CVE-2018-18690?
CVE-2018-18690 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel before 4.17, a local attacker able to set attributes on an xfs filesystem could make this filesystem non-operational until the next mount by triggering an unchecked error condition...
How severe is CVE-2018-18690?
CVE-2018-18690 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-2018-18690?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Canonical Ubuntu Linux, Debian Debian Linux.