NULL Pointer Dereference Affecting bpftool package, versions <0:3.10.0-957.1.3.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-CENTOS7-BPFTOOL-2132079
- published26 Jul 2021
- disclosed26 Nov 2018
Introduced: 26 Nov 2018
CVE-2018-14646 (opens in a new tab)How to fix?
Upgrade Centos:7 bpftool to version 0:3.10.0-957.1.3.el7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
The Linux kernel before 4.15-rc8 was found to be vulnerable to a NULL pointer dereference bug in the __netlink_ns_capable() function in the net/netlink/af_netlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14646
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f428fe4a04cc339166c8bbd489789760de3a0cee
- https://marc.info/?l=linux-netdev&m=151500466401174&w=2
- https://access.redhat.com/security/cve/CVE-2018-14646
- https://access.redhat.com/errata/RHSA-2018:3651