The BPF_S_ANC_NLATTR_NEST extension implementation in the sk_run_filter function in net/core/filter.c...
Vulnerability Description
The BPF_S_ANC_NLATTR_NEST extension implementation in the sk_run_filter function in net/core/filter.c in the Linux kernel through 3.14.3 uses the reverse order in a certain subtraction, which allows local users to cause a denial of service (over-read and system crash) via crafted BPF instructions. NOTE: the affected code was moved to the __skb_get_nlattr_nest function before the vulnerability was announced.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- http://www.openwall.com/lists/oss-security/2014/05/09/6
- http://www.ubuntu.com/usn/USN-2263-1
- http://www.debian.org/security/2014/dsa-2949
- https://source.android.com/security/bulletin/2017-04-01
- http://www.ubuntu.com/usn/USN-2261-1
- http://www.ubuntu.com/usn/USN-2252-1
- http://linux.oracle.com/errata/ELSA-2014-3052.html
- http://secunia.com/advisories/58990
- http://secunia.com/advisories/60613
- http://www.ubuntu.com/usn/USN-2264-1
- https://github.com/torvalds/linux/commit/05ab8f2647e4221cbdb3856dd7d32bd5407316b3
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=05ab8f2647e4221cbdb3856dd7d32bd5407316b3
- http://www.ubuntu.com/usn/USN-2262-1
- http://www.securityfocus.com/bid/67321
- http://www.ubuntu.com/usn/USN-2259-1
- http://www.ubuntu.com/usn/USN-2251-1
- http://secunia.com/advisories/59311
- http://secunia.com/advisories/59597
- http://www.securitytracker.com/id/1038201
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CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.