Use After Free Affecting kernel-bootwrapper package, versions <0:3.10.0-693.el7
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Test your applications- Snyk ID SNYK-RHEL7-KERNELBOOTWRAPPER-4682367
- published 26 Jul 2021
- disclosed 15 May 2016
Introduced: 15 May 2016
CVE-2016-9806 Open this link in a new tabHow to fix?
Upgrade RHEL:7 kernel-bootwrapper 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-bootwrapper package and not the kernel-bootwrapper package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
Race condition in the netlink_dump function in net/netlink/af_netlink.c in the Linux kernel before 4.6.3 allows local users to cause a denial of service (double free) or possibly have unspecified other impact via a crafted application that makes sendmsg system calls, leading to a free operation associated with a new dump that started earlier than anticipated.
References
- http://www.securityfocus.com/bid/94653
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=92964c79b357efd980812c4de5c1fd2ec8bb5520
- https://bugzilla.redhat.com/show_bug.cgi?id=1401502
- https://github.com/torvalds/linux/commit/92964c79b357efd980812c4de5c1fd2ec8bb5520
- https://source.android.com/security/bulletin/2017-03-01.html
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.3
- https://access.redhat.com/security/cve/CVE-2016-9806
- http://lists.openwall.net/netdev/2016/05/15/69
- http://www.openwall.com/lists/oss-security/2016/12/03/4
- https://access.redhat.com/errata/RHSA-2017:1842
- http://www.securitytracker.com/id/1037968