What is CVE-2007-6762?

CVE-2007-6762 is a critical-severity vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2019-07-27.

How severe is CVE-2007-6762?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Linux Kernel

CVE-2007-6762

In the Linux kernel before 2.6.20, there is an off-by-one bug in net/netlabel/netlabel_cipso_v4.c where it is possible to overflow the doi_def->tags[] array.

Vulnerability class: Buffer Overflow

Published 2019-07-27 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.030 (86.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.030 · newest: 0.030 · change: 0.000

Affected products

Linux Kernel

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

github.com/torvalds/linux/commit/2a2f11c227bdf292b3a2900ad04139d301b56ac4 (Patch, Third Party Advisory)
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
mirrors.edge.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.20 (Broken Link)
support.f5.com/csp/article/K05342145
support.f5.com/csp/article/K05342145

Frequently asked questions

What is CVE-2007-6762?: CVE-2007-6762 is a critical-severity vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2019-07-27.
How severe is CVE-2007-6762?: Critical severity. CVSS v3 base score is 9.8 out of 10.