Buffer overflow in Linux Kernel
CVE-2017-16995
The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.4 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging incorrect sign extension.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.301 (98.2th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.301 · newest: 0.301 · change: 0.000
Affected products
- Linux Kernel
- Canonical Ubuntu Linux — versions 14.04, 16.04
- Debian Linux — versions 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.exploit-db.com/exploits/45058/ (VDB Entry, Third Party Advisory, exploit)
- github.com/torvalds/linux/commit/95a762e2c8c942780948091f8f2a4f32fce1ac6f (Third Party Advisory)
- usn.ubuntu.com/3619-2/ (vendor-advisory, Third Party Advisory)
- bugs.chromium.org/p/project-zero/issues/detail (Third Party Advisory)
- usn.ubuntu.com/3633-1/ (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/102288 (VDB Entry, Third Party Advisory, vdb-entry)
- www.exploit-db.com/exploits/44298/ (VDB Entry, Third Party Advisory, exploit)
- www.exploit-db.com/exploits/45010/ (VDB Entry, Third Party Advisory, exploit)
- www.debian.org/security/2017/dsa-4073 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/usn/usn-3523-2/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-16995?
- CVE-2017-16995 is a high-severity vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-12-27.
- How severe is CVE-2017-16995?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2017-16995 known to be exploited?
- 147 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.