What is CVE-2015-5327?

CVE-2015-5327 is a medium-severity vulnerability in Linux Kernel, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2017-09-25.

How severe is CVE-2015-5327?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Out-of-bounds Read in Linux Kernel

CVE-2015-5327

Out-of-bounds memory read in the x509_decode_time function in x509_cert_parser.c in Linux kernels 4.3-rc1 and after.

Vulnerability class: Buffer Overflow

Published 2017-09-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.016 (75.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Linux Kernel — versions 4.3

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

www.openwall.com/lists/oss-security/2015/11/27/1 (mailing-list, Mailing List, Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch)

Frequently asked questions

What is CVE-2015-5327?: CVE-2015-5327 is a medium-severity vulnerability in Linux Kernel, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2017-09-25.
How severe is CVE-2015-5327?: Medium severity. CVSS v3 base score is 6.5 out of 10.