Buffer overflow in Linux Kernel
CVE-2016-4998
The IPT_SO_SET_REPLACE setsockopt implementation in the netfilter subsystem in the Linux kernel before 4.6 allows local users to cause a denial of service (out-of-bounds read) or possibly obtain sensitive information from kernel heap memory by leveraging in-container root access to provide a crafted offset value that leads to crossing a ruleset blob boundary.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.019 (78.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000
Affected products
- Linux Kernel
- Oracle Linux — versions 7
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.10
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html (Third Party Advisory)
- www.ubuntu.com/usn/USN-3017-1 (vendor-advisory, Third Party Advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
- www.ubuntu.com/usn/USN-3017-3 (vendor-advisory, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-1847.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html (vendor-advisory)
- www.ubuntu.com/usn/USN-3018-2 (vendor-advisory, Third Party Advisory)
- www.ubuntu.com/usn/USN-3017-2 (vendor-advisory, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-1875.html (vendor-advisory)
- www.ubuntu.com/usn/USN-3019-1 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-4998?
- CVE-2016-4998 is a high-severity vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.1/10. Published 2016-07-03.
- How severe is CVE-2016-4998?
- High severity. CVSS v3 base score is 7.1 out of 10.
- Is CVE-2016-4998 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.