A memory leak was discovered in matio 1.5.21 and earlier in Mat_VarReadNextInfo5() in mat5.c via a crafted file.

published 2022-05-02 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-24813

cvss: 5.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits: 0; none known

A memory leak was discovered in matio 1.5.21 and earlier in Mat_VarReadNextInfo5() in mat5.c via a crafted file. This issue can potentially result in DoS.

Patch / fix

fixed in 1 distros 2 links 1

matio_project matio 1.5.22

debian ubuntu

libmatio Debian 14, Debian 13, Debian 12 1.5.22-1

debian advisories DEBIAN-CVE-2022-1515

libmatio Ubuntu Pro 20.04 LTS 1.5.17-3ubuntu0.1~esm2
libmatio Ubuntu Pro 22.04 LTS 1.5.21-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2022-1515

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

bugzilla.redhat.com/show_bug.cgi?id=2079986 advisory

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-1515 updated 2026-03-27 cvss 6.5

matio: memory leak in Mat_VarReadNextInfo5() in mat5.c

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/tbeu/matio/issues/186 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

n/a matio

Classification

Weakness

CWE-401 Missing Release of Memory after Effective Lifetime

References

bugzilla.redhat.com /show_bug.cgi?id=2079986
issue-tracking, patch, third-party-advisory
github.com /tbeu/matio/issues/186
exploit, third-party-advisory

Sources

CVE List CVE-2022-1515
NVD CVE-2022-1515

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary