CVE-2017-8797
HighThe 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.
CVSS 3.1 score
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type
CWE-129CVE-2017-8797 is classified as CWE-129
See CWE-129 on MITRE CWE for full details on this weakness type.
References
The following references provide additional information about CVE-2017-8797 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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Release Notes Vendor Advisory
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Securityfocushttp://www.securityfocus.com/bid/99298Third Party Advisory VDB Entry
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Securitytrackerhttp://www.securitytracker.com/id/1038790Broken Link Third Party Advisory VDB Entry
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Third Party Advisory
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Third Party Advisory
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Third Party Advisory
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Third Party Advisory
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Issue Tracking Third Party Advisory VDB Entry
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PatchKernel patch commithttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b550a32e60a4941994b437a8d662432a486235a5
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PatchKernel patch commithttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f961e3f2acae94b727380c0b74e2d3954d0edf79
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PatchKernel patch commithttp://www.openwall.com/lists/oss-security/2017/06/27/5
Frequently asked questions
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What is CVE-2017-8797?
CVE-2017-8797 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10 . CVE-2017-8797 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2017-8797?
CVE-2017-8797 has a CVSS score of 7.5 out of 10, rated High severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. -
Is there a patch available for CVE-2017-8797?
No patch is currently available for CVE-2017-8797. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
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Is CVE-2017-8797 actively exploited?
No — CVE-2017-8797 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.