Vulnerability Details : CVE-2017-14340
The XFS_IS_REALTIME_INODE macro in fs/xfs/xfs_linux.h in the Linux kernel before 4.13.2 does not verify that a filesystem has a realtime device, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via vectors related to setting an RHINHERIT flag on a directory.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2017-14340
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-14340
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 8 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-14340
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:N/A:C |
3.9
|
6.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2017-14340
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-14340
-
http://www.debian.org/security/2017/dsa-3981
Debian -- Security Information -- DSA-3981-1 linux
-
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.2
Release Notes;Vendor Advisory
-
http://www.securityfocus.com/bid/100851
Linux Kernel CVE-2017-14340 Local Denial of Service VulnerabilityThird Party Advisory;VDB Entry
-
https://bugzilla.redhat.com/show_bug.cgi?id=1491344
1491344 – (CVE-2017-14340) CVE-2017-14340 kernel: xfs: unprivileged user kernel oopsIssue Tracking;Patch;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2017:2918
RHSA-2017:2918 - Security Advisory - Red Hat Customer Portal
-
http://seclists.org/oss-sec/2017/q3/436
oss-sec: CVE-2017-14340: Linux kernel: xfs: unprivileged user kernel oopsMailing List;Mitigation;Patch;Third Party Advisory
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https://github.com/torvalds/linux/commit/b31ff3cdf540110da4572e3e29bd172087af65cc
xfs: XFS_IS_REALTIME_INODE() should be false if no rt device present · torvalds/linux@b31ff3c · GitHubIssue Tracking;Patch;Third Party Advisory
-
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b31ff3cdf540110da4572e3e29bd172087af65cc
kernel/git/torvalds/linux.git - Linux kernel source treeIssue Tracking;Patch;Third Party Advisory
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