Buffer overflow in Linux Kernel
CVE-2018-8822
Incorrect buffer length handling in the ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c in the Linux kernel through 4.15.11, and in drivers/staging/ncpfs/ncplib_kernel.c in the Linux kernel 4.16-rc through 4.16-rc6, could be exploited by malicious NCPFS servers to crash the kernel or execute code.
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: 0.005 (42.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Linux Kernel — versions 4.16
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 7.0, 8.0, 9.0
Weakness classification (CWE)
References
- www.debian.org/security/2018/dsa-4187 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3654-1/ (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/103476 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- www.debian.org/security/2018/dsa-4188 (vendor-advisory, Third Party Advisory)
- www.mail-archive.com/netdev@vger.kernel.org/msg223373.html (Patch, Third Party Advisory)
- usn.ubuntu.com/3653-2/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3655-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3654-2/ (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/05/msg00000.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/3655-2/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-8822?
- CVE-2018-8822 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 2018-03-20.
- How severe is CVE-2018-8822?
- High severity. CVSS v3 base score is 7.8 out of 10.