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Date: Thu, 8 Jan 2026 21:05:24 +0100
To: submit@bugs.debian.org
Subject: libtasn1-6: CVE-2025-13151
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From: =?UTF-8?Q?Moritz_M=C3=BChlenhoff?= <jmm@inutil.org>
Delivered-To: submit@bugs.debian.org

Source: libtasn1-6
X-Debbugs-CC: team@security.debian.org
Severity: important
Tags: security

Hi,

The following vulnerability was published for libtasn1-6.

CVE-2025-13151[0]:
| Stack-based buffer overflow in libtasn1 version: v4.20.0. The
| function fails to validate the size of input data resulting in a
| buffer overflow in asn1_expend_octet_string.

Patch isn't merged yet:
https://gitlab.com/gnutls/libtasn1/-/merge_requests/121


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2025-13151
    https://www.cve.org/CVERecord?id=CVE-2025-13151

Please adjust the affected versions in the BTS as needed.
]