CVE-2018-8822
HIGHCVSS 7.8/10EPSS 0.53%
Last modified
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/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
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
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2018-8822?
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Scan your code nowSource: NVD / NIST