NULL Pointer Dereference Affecting kernel-kdump package, versions <0:3.10.0-514.21.1.el7
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-RHEL7-KERNELKDUMP-5150176
- published26 Jul 2021
- disclosed15 Nov 2016
Introduced: 15 Nov 2016
CVE-2016-8646 (opens in a new tab)How to fix?
Upgrade RHEL:7 kernel-kdump to version 0:3.10.0-514.21.1.el7 or higher.
This issue was patched in RHSA-2017:1308.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-kdump package and not the kernel-kdump package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
The hash_accept function in crypto/algif_hash.c in the Linux kernel before 4.3.6 allows local users to cause a denial of service (OOPS) by attempting to trigger use of in-kernel hash algorithms for a socket that has received zero bytes of data.
References
- http://www.securityfocus.com/bid/94309
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4afa5f9617927453ac04b24b584f6c718dfb4f45
- https://bugzilla.redhat.com/show_bug.cgi?id=1388821
- https://github.com/torvalds/linux/commit/4afa5f9617927453ac04b24b584f6c718dfb4f45
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.6
- https://access.redhat.com/security/cve/CVE-2016-8646
- http://www.openwall.com/lists/oss-security/2016/11/15/2
- https://access.redhat.com/errata/RHSA-2017:1308