What is CVE-2017-18550?

CVE-2017-18550 is a medium-severity vulnerability in Linux Kernel, classified under Information Disclosure. CVSS score: 5.5/10. Published 2019-08-19.

How severe is CVE-2017-18550?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Information disclosure in Linux Kernel

CVE-2017-18550

An issue was discovered in drivers/scsi/aacraid/commctrl.c in the Linux kernel before 4.13. There is potential exposure of kernel stack memory because aac_get_hba_info does not initialize the hbainfo structure.

Vulnerability class: Information Disclosure

Published 2019-08-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.005 (43.7th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.7% 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

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2017-18550?: CVE-2017-18550 is a medium-severity vulnerability in Linux Kernel, classified under Information Disclosure. CVSS score: 5.5/10. Published 2019-08-19.
How severe is CVE-2017-18550?: Medium severity. CVSS v3 base score is 5.5 out of 10.