Resource exhaustion in Linux Linux_kernel
CVE-2014-8559
The d_walk function in fs/dcache.c in the Linux kernel through 3.17.2 does not properly maintain the semantics of rename_lock, which allows local users to cause a denial of service (deadlock and system hang) via a crafted application.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.001 (17.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Linux Linux_kernel
- Novell Suse_linux_enterprise_desktop — versions 12.0
- Novell Suse_linux_enterprise_server — versions 12.0
- Oracle Linux — versions 7
- Canonical Ubuntu_linux — versions 12.04, 14.04, 14.10
- Opensuse Evergreen — versions 11.4
- Opensuse — versions 13.1
- Suse Linux_enterprise_real_time_extension — versions 11
- Suse Linux_enterprise_software_development_kit — versions 12
- Suse Linux_enterprise_workstation_extension — versions 12
Weakness classification (CWE)
References
- [linux-kernel] 20141026 Re: fs: lockup on rename_mutex in fs/dcache.c:1035 (mailing-list, x_refsource_MLIST, Exploit, Mailing List, Third Party Advisory)
- USN-2515-1 (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- [linux-kernel] 20141026 Re: fs: lockup on rename_mutex in fs/dcache.c:1035 (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- DSA-3170 (vendor-advisory, Exploit, Patch, Third Party Advisory, x_refsource_DEBIAN)
- SUSE-SU-2015:0736 (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- USN-2492-1 (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- RHSA-2015:1978 (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- [oss-security] 20141030 CVE-2014-8559 - Linux kernel fs/dcache.c incorrect use of rename_lock (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- 62801 (x_refsource_SECUNIA, Broken Link, third-party-advisory)
- RHSA-2015:1976 (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2014-8559?
- CVE-2014-8559 is a medium-severity vulnerability in Linux Linux_kernel, classified under Uncontrolled Resource Consumption. CVSS score: 5.5/10. Published 2014-11-10.
- How severe is CVE-2014-8559?
- Medium severity. CVSS v3 base score is 5.5 out of 10.