The NFSv4 server in the Linux kernel before 4.11.3 does...
Vulnerability Description
The NFSv4 server in the Linux kernel before 4.11.3 does not properly validate the layout type when processing the NFSv4 pNFS GETDEVICEINFO or LAYOUTGET operand in a UDP packet from a remote attacker. This type value is uninitialized upon encountering certain error conditions. This value is used as an array index for dereferencing, which leads to an OOPS and eventually a DoS of knfsd and a soft-lockup of the whole system.
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/2017/06/27/5
- http://www.securitytracker.com/id/1038790
- https://access.redhat.com/errata/RHSA-2017:2437
- https://github.com/torvalds/linux/commit/f961e3f2acae94b727380c0b74e2d3954d0edf79
- https://access.redhat.com/errata/RHSA-2017:2669
- https://bugzilla.redhat.com/show_bug.cgi?id=1466329
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f961e3f2acae94b727380c0b74e2d3954d0edf79
- https://github.com/torvalds/linux/commit/b550a32e60a4941994b437a8d662432a486235a5
- https://access.redhat.com/errata/RHSA-2017:2077
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.3
- https://access.redhat.com/errata/RHSA-2017:1842
- http://www.securityfocus.com/bid/99298
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b550a32e60a4941994b437a8d662432a486235a5
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Weaknesses (CWE)
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MITRE ATT&CK TTPs
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