Vulnerability Details : CVE-2014-7283
Potential exploit
The xfs_da3_fixhashpath function in fs/xfs/xfs_da_btree.c in the xfs implementation in the Linux kernel before 3.14.2 does not properly compare btree hash values, which allows local users to cause a denial of service (filesystem corruption, and OOPS or panic) via operations on directories that have hash collisions, as demonstrated by rmdir operations.
Vulnerability category: Denial of service
Products affected by CVE-2014-7283
- cpe:2.3:a:redhat:mrg_realtime:2.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2014-7283
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 9 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2014-7283
| 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 |
CWE ids for CVE-2014-7283
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2014-7283
-
https://bugzilla.redhat.com/show_bug.cgi?id=1148777
1148777 – (CVE-2014-7283) CVE-2014-7283 kernel: xfs: directory hash ordering denial of serviceExploit;Issue Tracking;Patch;Third Party Advisory
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http://www.securityfocus.com/bid/70261
Linux Kernel 'xfs_da_btree.c' Local Denial of Service VulnerabilityThird Party Advisory;VDB Entry
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https://github.com/torvalds/linux/commit/c88547a8119e3b581318ab65e9b72f27f23e641d
xfs: fix directory hash ordering bug · torvalds/linux@c88547a · GitHubExploit;Patch;Third Party Advisory
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http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c88547a8119e3b581318ab65e9b72f27f23e641d
kernel/git/torvalds/linux.git - Linux kernel source treeExploit;Patch;Vendor Advisory
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http://marc.info/?l=linux-xfs&m=139590613002926&w=2
'xfs errors while unlinking filenames with hash collisions' - MARCExploit;Third Party Advisory
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http://www.openwall.com/lists/oss-security/2014/10/01/29
oss-security - xfs directory hash ordering bugMailing List;Third Party Advisory
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http://rhn.redhat.com/errata/RHSA-2014-1943.html
RHSA-2014:1943 - Security Advisory - Red Hat Customer PortalThird Party Advisory
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http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.14.2
Release Notes;Vendor Advisory
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