arch/x86/kernel/tls.c in the Thread Local Storage (TLS) implementation in the...
Vulnerability Description
arch/x86/kernel/tls.c in the Thread Local Storage (TLS) implementation in the Linux kernel through 3.18.1 allows local users to bypass the espfix protection mechanism, and consequently makes it easier for local users to bypass the ASLR protection mechanism, via a crafted application that makes a set_thread_area system call and later reads a 16-bit value.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
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Credits & Attribution
No credits recorded in the NVD database.
References
- http://www.ubuntu.com/usn/USN-2515-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1172797
- http://www.ubuntu.com/usn/USN-2491-1
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
- http://www.ubuntu.com/usn/USN-2490-1
- http://www.ubuntu.com/usn/USN-2492-1
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=41bdc78544b8a93a9c6814b8bbbfef966272abbe
- http://secunia.com/advisories/62801
- http://www.securityfocus.com/bid/71684
- http://www.ubuntu.com/usn/USN-2518-1
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:058
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
- http://www.ubuntu.com/usn/USN-2493-1
- http://www.ubuntu.com/usn/USN-2517-1
- http://www.debian.org/security/2015/dsa-3128
- http://www.ubuntu.com/usn/USN-2516-1
- https://github.com/torvalds/linux/commit/41bdc78544b8a93a9c6814b8bbbfef966272abbe
- http://rhn.redhat.com/errata/RHSA-2015-1272.html
- http://www.openwall.com/lists/oss-security/2014/12/15/6
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Weaknesses (CWE)
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MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.