CVE-2018-8822

Name: CVE-2018-8822
Creator: NVD / NIST
Published: 2018-03-20T17:29:00.423+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2018-8822 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.53%

40.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	>= 2.6.12, < 3.2.102	—
Linux	Linux Kernel	>= 3.3, < 3.16.57	—
Linux	Linux Kernel	>= 3.17, < 3.18.103	—
Linux	Linux Kernel	>= 3.19, < 4.1.52	—
Linux	Linux Kernel	>= 4.2, < 4.4.125	—
Linux	Linux Kernel	>= 4.5, < 4.9.91	—
Linux	Linux Kernel	>= 4.10, < 4.14.31	—
Linux	Linux Kernel	>= 4.15, < 4.15.14	—
Linux	Linux Kernel	4.16	Rc
Canonical	Ubuntu Linux	12.04	—
Canonical	Ubuntu Linux	14.04	—
Canonical	Ubuntu Linux	16.04	—
Canonical	Ubuntu Linux	17.10	—
Debian	Debian Linux	7.0	—
Debian	Debian Linux	8.0	—
Debian	Debian Linux	9.0	—

References

http://www.openwall.com/lists/oss-security/2022/12/27/3Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/103476Broken Link, Third Party Advisory, VDB Entry
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3653-1/Third Party Advisory
https://usn.ubuntu.com/3653-2/Third Party Advisory
https://usn.ubuntu.com/3654-1/Third Party Advisory
https://usn.ubuntu.com/3654-2/Third Party Advisory
https://usn.ubuntu.com/3655-1/Third Party Advisory
https://usn.ubuntu.com/3655-2/Third Party Advisory
https://usn.ubuntu.com/3656-1/Third Party Advisory
https://usn.ubuntu.com/3657-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4187Third Party Advisory
https://www.debian.org/security/2018/dsa-4188Third Party Advisory
https://www.mail-archive.com/netdev%40vger.kernel.org/msg223373.htmlPatch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/12/27/3Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/103476Broken Link, Third Party Advisory, VDB Entry
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3653-1/Third Party Advisory
https://usn.ubuntu.com/3653-2/Third Party Advisory
https://usn.ubuntu.com/3654-1/Third Party Advisory
https://usn.ubuntu.com/3654-2/Third Party Advisory
https://usn.ubuntu.com/3655-1/Third Party Advisory
https://usn.ubuntu.com/3655-2/Third Party Advisory
https://usn.ubuntu.com/3656-1/Third Party Advisory
https://usn.ubuntu.com/3657-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4187Third Party Advisory
https://www.debian.org/security/2018/dsa-4188Third Party Advisory
https://www.mail-archive.com/netdev%40vger.kernel.org/msg223373.htmlPatch, Third Party Advisory

Timeline

Published: Mar 20, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-8822?

How severe is CVE-2018-8822?

CVE-2018-8822 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2018-8822?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-8822?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST