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.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4459 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4459-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                   Andreas Henriksson     January 29, 2026                              https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : libmatio     Version        : 1.5.19-2+deb11u1     CVE ID         : CVE-2022-1515 CVE-2025-2338 CVE-2025-50343     Debian Bug     : 1104247 1124797


    Multiple vulnerabilities has been discovered in libmatio, a MAT File I/O     Library.

    CVE-2025-50343       A Denial of Service (DoS) and in certain cases heap corruption vulnerability       was found, which could lead to potential remote code execution if libmatio is       embedded in services that accepts user-supplied .mat files.

    CVE-2025-2338       A Denial of Service (DoS) and head-based buffer overflow was found, which       could potentially lead to remote code execution if libmatio is embedded in       services that accepts user-supplied .mat files.

    CVE-2022-1515       A memory leak was discovered in matio 1.5.21 and earlier. This could lead       to a potential Denial of Service (DoS).

    CVE-2020-36428      A heap-based buffer overflow was found which could lead to potential remote      code execution if libmatio is embedded in services that accepts user-supplied      .mat files.

    Additionally CVE-2025-2337 and CVE-2020-36428 was investigated and deemed     not to apply (directly) to this libmatio version.

    For Debian 11 bullseye, these problems have been fixed in version     1.5.19-2+deb11u1.

    We recommend that you upgrade your libmatio packages.

    For the detailed security status of libmatio please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/libmatio

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2022-1515)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Ubuntu 20.04 LTS / 22.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-6829-1 advisory.

    It was discovered that matio incorrectly handled certain malformed files. An attacker could possibly use     this issue to cause a denial of service.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
297142	Debian dla-4459 : libmatio-dev - security update	Nessus	Debian Local Security Checks	medium
229718	Linux Distros Unpatched Vulnerability : CVE-2022-1515	Nessus	Misc.	medium
200439	Ubuntu 20.04 LTS / 22.04 LTS : matio vulnerability (USN-6829-1)	Nessus	Ubuntu Local Security Checks	medium

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CVE-2022-1515

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