What is CVE-2026-71220?

CVE-2026-71220 is a high-severity vulnerability in Red Hat Enterprise Linux 7, classified under Out-of-bounds Write. CVSS score: 7.0/10. Published 2026-09-03.

How severe is CVE-2026-71220?

High severity. CVSS v3 base score is 7.0 out of 10.

Buffer overflow in Red Hat Enterprise Linux 7

CVE-2026-71220

A stack out-of-bounds write vulnerability was found in gfs2-utils. In gfs2_edit, the di_height field from on-disk inode metadata is used as an array index without bounds checking, causing a stack buffer overflow that may lead to arbitrary code execution when processing crafted GFS2 filesystem images.

Vulnerability class: Buffer Overflow

EPSS: 0.001 (3.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
secalert@redhat.com (x_refsource_REDHAT, issue-tracking)

Frequently asked questions

What is CVE-2026-71220?: CVE-2026-71220 is a high-severity vulnerability in Red Hat Enterprise Linux 7, classified under Out-of-bounds Write. CVSS score: 7.0/10. Published 2026-09-03.
How severe is CVE-2026-71220?: High severity. CVSS v3 base score is 7.0 out of 10.