Improper Input Validation Affecting kernel package, versions <0:3.10.0-693.el7
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Test your applications- Snyk ID SNYK-RHEL7-KERNEL-4698804
- published 26 Jul 2021
- disclosed 27 Jun 2017
Introduced: 27 Jun 2017
CVE-2017-8797 Open this link in a new tabHow to fix?
Upgrade RHEL:7 kernel to version 0:3.10.0-693.el7 or higher.
This issue was patched in RHSA-2017:1842.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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.
References
- http://www.securityfocus.com/bid/99298
- https://access.redhat.com/security/cve/CVE-2017-8797
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b550a32e60a4941994b437a8d662432a486235a5
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f961e3f2acae94b727380c0b74e2d3954d0edf79
- https://bugzilla.redhat.com/show_bug.cgi?id=1466329
- https://github.com/torvalds/linux/commit/b550a32e60a4941994b437a8d662432a486235a5
- https://github.com/torvalds/linux/commit/f961e3f2acae94b727380c0b74e2d3954d0edf79
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.3
- http://www.openwall.com/lists/oss-security/2017/06/27/5
- https://access.redhat.com/errata/RHSA-2017:1842
- http://www.securitytracker.com/id/1038790