# CVE-2025-13151: CVE-2025-13151

CVE-2025-13151 is fixed in 13 products on 1 platform, first by libtasn1-6 4.13-2ubuntu0.1~esm1, released January 7, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-13151
- Priority: High
- CVSS: 7.5 (Low)
- EPSS: 0.0137
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 7, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-13151

## Description

This update for libtasn1 fixes the following issues:  - CVE-2025-13151: stack-based buffer overflow in `asn1_expend_octet_string` (bsc#1256341).

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libtasn1 RHEL 10 | 4.20.0-5.el10_2 | [RHSA-2026:28235](https://patchblox.com/security/data/fix/linux/rhsa-2026-28235.md) | Jan 7, 2026 |
| Linux | libtasn1 RHEL 8 | 0:4.13-6.el8_10 | [RHSA-2026:36728](https://patchblox.com/security/data/fix/linux/rhsa-2026-36728.md) | Jul 9, 2026 |
| Linux | libtasn1 RHEL 9 | 0:4.16.0-10.el9_8 | [RHSA-2026:28253](https://patchblox.com/security/data/fix/linux/rhsa-2026-28253.md) | Jun 24, 2026 |
| Linux | libtasn1 almalinux 10 | 4.20.0-5.el10_2 | [ALSA-2026:28235](https://patchblox.com/security/data/fix/linux/alsa-2026-28235.md) | Jun 23, 2026 |
| Linux | libtasn1 almalinux 8 | 4.13-6.el8_10 | [ALSA-2026:36728](https://patchblox.com/security/data/fix/linux/alsa-2026-36728.md) | Jul 8, 2026 |
| Linux | libtasn1 almalinux 9 | 4.16.0-10.el9_8 | [ALSA-2026:28253](https://patchblox.com/security/data/fix/linux/alsa-2026-28253.md) | Jun 23, 2026 |
| Linux | libtasn1 amzn 2023 | 4.19.0-1.amzn2023.0.6 | [ALAS2023-2026-1395](https://patchblox.com/security/data/fix/linux/alas2023-2026-1395.md) | Feb 5, 2026 |
| Linux | libtasn1 ol 10 | 0:4.20.0-5.el10_2 | [ELSA-2026-28235](https://patchblox.com/security/data/fix/linux/elsa-2026-28235.md) | Jul 16, 2026 |
| Linux | libtasn1 ol 8 | 0:4.13-6.el8_10 | [ELSA-2026-36728](https://patchblox.com/security/data/fix/linux/elsa-2026-36728.md) | Jul 8, 2026 |
| Linux | libtasn1 ol 9 | 0:4.16.0-10.el9_8 | [ELSA-2026-28253](https://patchblox.com/security/data/fix/linux/elsa-2026-28253.md) | Jun 23, 2026 |
| Linux | libtasn1 opensuse-leap 15.6 | 4.13-150000.4.14.1 | [SUSE-SU-2026:0224-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0224-1.md) | Jan 22, 2026 |
| Linux | libtasn1 opensuse-leap 16.0 | 4.21.0-160000.1.1 | [OPENSUSE-SU-2026:20470-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20470-1.md) | Apr 7, 2026 |
| Linux | libtasn1 rocky 10 | 0:4.20.0-5.el10_2 | [RLSA-2026:28235](https://patchblox.com/security/data/fix/linux/rlsa-2026-28235.md) | Jun 24, 2026 |
| Linux | libtasn1 rocky 8 | 0:4.13-6.el8_10 | [RLSA-2026:36728](https://patchblox.com/security/data/fix/linux/rlsa-2026-36728.md) | Jul 9, 2026 |
| Linux | libtasn1 rocky 9 | 0:4.16.0-10.el9_8 | [RLSA-2026:28253](https://patchblox.com/security/data/fix/linux/rlsa-2026-28253.md) | Jun 24, 2026 |
| Linux | libtasn1 sles 15.7 | 4.13-150000.4.14.1 | [SUSE-SU-2026:0224-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0224-1.md) | Jan 22, 2026 |
| Linux | libtasn1 sles 16.0 | 4.21.0-160000.1.1 | [SUSE-SU-2026:21142-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-21142-1.md) | Apr 7, 2026 |
| Linux | libtasn1-6 Debian 13.5 (trixie) | 4.20.0-2+deb13u1 | [DEBIAN-CVE-2025-13151](https://patchblox.com/security/data/fix/linux/debian-cve-2025-13151.md) | Jan 7, 2026 |
| Linux | libtasn1-6 Debian 14 | 4.21.0-2 | [DEBIAN-CVE-2025-13151](https://patchblox.com/security/data/fix/linux/debian-cve-2025-13151.md) | Jan 7, 2026 |
| Linux | libtasn1-6 Ubuntu 18.04.6 LTS (bionic) | 4.13-2ubuntu0.1~esm1 | [libtasn1-6 4.13-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libtasn1-6-4.13-2ubuntu0.1-esm1.md) | Jan 7, 2026 |
| Linux | libtasn1-6 Ubuntu 20.04 LTS (focal) | 4.16.0-2ubuntu0.1+esm1 | [libtasn1-6 4.16.0-2ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libtasn1-6-4.16.0-2ubuntu0.1-esm1.md) | Jan 7, 2026 |
| Linux | libtasn1-6 Ubuntu 22.04.1 LTS (jammy) | 4.18.0-4ubuntu0.2 | [libtasn1-6 4.18.0-4ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libtasn1-6-4.18.0-4ubuntu0.2.md) | Jan 7, 2026 |
| Linux | libtasn1-6 Ubuntu 24.04.5 LTS (noble) | 4.19.0-3ubuntu0.24.04.2 | [libtasn1-6 4.19.0-3ubuntu0.24.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libtasn1-6-4.19.0-3ubuntu0.24.04.2.md) | Jan 7, 2026 |
| Linux | libtasn1-6 Ubuntu 25.10 (questing) | 4.20.0-2ubuntu0.25.10.1 | [libtasn1-6 4.20.0-2ubuntu0.25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libtasn1-6-4.20.0-2ubuntu0.25.10.1.md) | Jan 7, 2026 |
| Linux | libtasn1-bin Ubuntu 18.04.6 LTS (bionic) | 4.13-2ubuntu0.1~esm1 | [libtasn1-bin 4.13-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libtasn1-bin-4.13-2ubuntu0.1-esm1.md) | Jan 7, 2026 |
| Linux | libtasn1-bin Ubuntu 20.04 LTS (focal) | 4.16.0-2ubuntu0.1+esm1 | [libtasn1-bin 4.16.0-2ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libtasn1-bin-4.16.0-2ubuntu0.1-esm1.md) | Jan 7, 2026 |
| Linux | libtasn1-bin Ubuntu 22.04.1 LTS (jammy) | 4.18.0-4ubuntu0.2 | [libtasn1-bin 4.18.0-4ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libtasn1-bin-4.18.0-4ubuntu0.2.md) | Jan 7, 2026 |
| Linux | libtasn1-bin Ubuntu 24.04.5 LTS (noble) | 4.19.0-3ubuntu0.24.04.2 | [libtasn1-bin 4.19.0-3ubuntu0.24.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libtasn1-bin-4.19.0-3ubuntu0.24.04.2.md) | Jan 7, 2026 |
| Linux | libtasn1-bin Ubuntu 25.10 (questing) | 4.20.0-2ubuntu0.25.10.1 | [libtasn1-bin 4.20.0-2ubuntu0.25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libtasn1-bin-4.20.0-2ubuntu0.25.10.1.md) | Jan 7, 2026 |
| Linux | libtasn1-debuginfo amzn 2023 | 4.19.0-1.amzn2023.0.6 | [ALAS2023-2026-1395](https://patchblox.com/security/data/fix/linux/alas2023-2026-1395.md) | Feb 5, 2026 |
| Linux | libtasn1-debugsource amzn 2023 | 4.19.0-1.amzn2023.0.6 | [ALAS2023-2026-1395](https://patchblox.com/security/data/fix/linux/alas2023-2026-1395.md) | Feb 5, 2026 |
| Linux | libtasn1-devel RHEL 8 | 0:4.13-6.el8_10 | [RHSA-2026:36728](https://patchblox.com/security/data/fix/linux/rhsa-2026-36728.md) | Jul 9, 2026 |
| Linux | libtasn1-devel RHEL 9 | 0:4.16.0-10.el9_8 | [RHSA-2026:28253](https://patchblox.com/security/data/fix/linux/rhsa-2026-28253.md) | Jun 24, 2026 |
| Linux | libtasn1-devel almalinux 10 | 4.20.0-5.el10_2 | [ALSA-2026:28235](https://patchblox.com/security/data/fix/linux/alsa-2026-28235.md) | Jun 23, 2026 |
| Linux | libtasn1-devel almalinux 8 | 4.13-6.el8_10 | [ALSA-2026:36728](https://patchblox.com/security/data/fix/linux/alsa-2026-36728.md) | Jul 8, 2026 |
| Linux | libtasn1-devel almalinux 9 | 4.16.0-10.el9_8 | [ALSA-2026:28253](https://patchblox.com/security/data/fix/linux/alsa-2026-28253.md) | Jun 23, 2026 |
| Linux | libtasn1-devel amzn 2023 | 4.19.0-1.amzn2023.0.6 | [ALAS2023-2026-1395](https://patchblox.com/security/data/fix/linux/alas2023-2026-1395.md) | Feb 5, 2026 |
| Linux | libtasn1-devel ol 10 | 0:4.20.0-5.el10_2 | [ELSA-2026-28235](https://patchblox.com/security/data/fix/linux/elsa-2026-28235.md) | Jul 16, 2026 |
| Linux | libtasn1-devel ol 8 | 0:4.13-6.el8_10 | [ELSA-2026-36728](https://patchblox.com/security/data/fix/linux/elsa-2026-36728.md) | Jul 8, 2026 |
| Linux | libtasn1-devel ol 9 | 0:4.16.0-10.el9_8 | [ELSA-2026-28253](https://patchblox.com/security/data/fix/linux/elsa-2026-28253.md) | Jun 23, 2026 |
| Linux | libtasn1-tools RHEL 8 | 0:4.13-6.el8_10 | [RHSA-2026:36728](https://patchblox.com/security/data/fix/linux/rhsa-2026-36728.md) | Jul 9, 2026 |
| Linux | libtasn1-tools RHEL 9 | 0:4.16.0-10.el9_8 | [RHSA-2026:28253](https://patchblox.com/security/data/fix/linux/rhsa-2026-28253.md) | Jun 24, 2026 |
| Linux | libtasn1-tools almalinux 10 | 4.20.0-5.el10_2 | [ALSA-2026:28235](https://patchblox.com/security/data/fix/linux/alsa-2026-28235.md) | Jun 23, 2026 |
| Linux | libtasn1-tools almalinux 8 | 4.13-6.el8_10 | [ALSA-2026:36728](https://patchblox.com/security/data/fix/linux/alsa-2026-36728.md) | Jul 8, 2026 |
| Linux | libtasn1-tools almalinux 9 | 4.16.0-10.el9_8 | [ALSA-2026:28253](https://patchblox.com/security/data/fix/linux/alsa-2026-28253.md) | Jun 23, 2026 |
| Linux | libtasn1-tools amzn 2023 | 4.19.0-1.amzn2023.0.6 | [ALAS2023-2026-1395](https://patchblox.com/security/data/fix/linux/alas2023-2026-1395.md) | Feb 5, 2026 |
| Linux | libtasn1-tools ol 10 | 0:4.20.0-5.el10_2 | [ELSA-2026-28235](https://patchblox.com/security/data/fix/linux/elsa-2026-28235.md) | Jul 16, 2026 |
| Linux | libtasn1-tools ol 8 | 0:4.13-6.el8_10 | [ELSA-2026-36728](https://patchblox.com/security/data/fix/linux/elsa-2026-36728.md) | Jul 8, 2026 |
| Linux | libtasn1-tools ol 9 | 0:4.16.0-10.el9_8 | [ELSA-2026-28253](https://patchblox.com/security/data/fix/linux/elsa-2026-28253.md) | Jun 23, 2026 |
| Linux | libtasn1-tools-debuginfo amzn 2023 | 4.19.0-1.amzn2023.0.6 | [ALAS2023-2026-1395](https://patchblox.com/security/data/fix/linux/alas2023-2026-1395.md) | Feb 5, 2026 |
| Linux | mingw-libtasn1 Fedora 43 | 4.21.0-1.fc43 | [FEDORA-2026-0DFBD2A5E2](https://patchblox.com/security/data/fix/linux/fedora-2026-0dfbd2a5e2.md) | Jan 13, 2026 |
| Linux | mingw32-libtasn1 Fedora 43 | 4.21.0-1.fc43 | [FEDORA-2026-0DFBD2A5E2](https://patchblox.com/security/data/fix/linux/fedora-2026-0dfbd2a5e2.md) | Jan 13, 2026 |
| Linux | mingw32-libtasn1-debuginfo Fedora 43 | 4.21.0-1.fc43 | [FEDORA-2026-0DFBD2A5E2](https://patchblox.com/security/data/fix/linux/fedora-2026-0dfbd2a5e2.md) | Jan 13, 2026 |
| Linux | mingw64-libtasn1 Fedora 43 | 4.21.0-1.fc43 | [FEDORA-2026-0DFBD2A5E2](https://patchblox.com/security/data/fix/linux/fedora-2026-0dfbd2a5e2.md) | Jan 13, 2026 |
| Linux | mingw64-libtasn1-debuginfo Fedora 43 | 4.21.0-1.fc43 | [FEDORA-2026-0DFBD2A5E2](https://patchblox.com/security/data/fix/linux/fedora-2026-0dfbd2a5e2.md) | Jan 13, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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