Double Free in Gnu Patch

CVE-2018-6952

A double free exists in the another_hunk function in pch.c in GNU patch through 2.7.6.

Vulnerability class: Double Free

EPSS: 0.084 (94.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Gnu Patch
N/a — versions n/a

Weakness classification (CWE)

CWE-415 — Double Free

Public proof-of-concept exploits

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
cve@mitre.org (vendor-advisory, x_refsource_GENTOO)
cve@mitre.org (x_refsource_REDHAT, vendor-advisory)

Frequently asked questions

What is CVE-2018-6952?: CVE-2018-6952 is a high-severity vulnerability in Gnu Patch, classified under Double Free. CVSS score: 7.5/10. Published 2018-02-13.
How severe is CVE-2018-6952?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2018-6952 known to be exploited?: 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.