# CVE-2025-5222: Icu: stack buffer overflow in the srbroot::addtag function

CVE-2025-5222 is fixed in 8 products on 1 platform, first by RHSA-2025:11888, released November 14, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-5222
- Priority: High
- CVSS: 7.0 (Important)
- EPSS: 0.0044
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 14, 2024
- Weakness: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-5222

## Description

The International Components for Unicode (ICU) library provides robust and full-featured Unicode services.  Security Fix(es):  * icu: Stack buffer overflow in the SRBRoot::addTag function (CVE-2025-5222)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | icu Debian 11.6 (bullseye) | 67.1-7+deb11u1 | [DLA-4217-1](https://patchblox.com/security/data/fix/linux/dla-4217-1.md) | Jun 15, 2025 |
| Linux | icu Debian 12.15 (bookworm) | 72.1-3+deb12u1 | [DSA-5951-1](https://patchblox.com/security/data/fix/linux/dsa-5951-1.md) | Jun 26, 2025 |
| Linux | icu Debian 13.5 (trixie) | 76.1-4 | [DEBIAN-CVE-2025-5222](https://patchblox.com/security/data/fix/linux/debian-cve-2025-5222.md) | May 27, 2025 |
| Linux | icu Debian 14 | 76.1-4 | [DEBIAN-CVE-2025-5222](https://patchblox.com/security/data/fix/linux/debian-cve-2025-5222.md) | May 27, 2025 |
| Linux | icu RHEL 10 | 74.2-5.el10_0 | [RHSA-2025:11888](https://patchblox.com/security/data/fix/linux/rhsa-2025-11888.md) | Nov 14, 2024 |
| Linux | icu RHEL 9 | 0:67.1-10.el9_6 | [RHSA-2025:12083](https://patchblox.com/security/data/fix/linux/rhsa-2025-12083.md) | Jul 29, 2025 |
| Linux | icu almalinux 10 | 74.2-5.el10_0 | [ALSA-2025:11888](https://patchblox.com/security/data/fix/linux/alsa-2025-11888.md) | Jul 28, 2025 |
| Linux | icu almalinux 9 | 67.1-10.el9_6 | [ALSA-2025:12083](https://patchblox.com/security/data/fix/linux/alsa-2025-12083.md) | Jul 29, 2025 |
| Linux | icu amzn 2023 | 67.1-7.amzn2023.0.4 | [ALAS2023-2025-1057](https://patchblox.com/security/data/fix/linux/alas2023-2025-1057.md) | Jul 3, 2025 |
| Linux | icu ol 10 | 0:74.2-5.el10_0 | [ELSA-2025-11888](https://patchblox.com/security/data/fix/linux/elsa-2025-11888.md) | Jul 28, 2025 |
| Linux | icu ol 9 | 0:67.1-10.el9_6 | [ELSA-2025-12083](https://patchblox.com/security/data/fix/linux/elsa-2025-12083.md) | Jul 29, 2025 |
| Linux | icu opensuse-leap 15.6 | 65.1-150200.4.15.1 | [SUSE-SU-2025:02079-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-02079-1.md) | Jun 24, 2025 |
| Linux | icu rocky 10 | 0:74.2-5.el10_0 | [RLSA-2025:11888](https://patchblox.com/security/data/fix/linux/rlsa-2025-11888.md) | Oct 3, 2025 |
| Linux | icu rocky 9 | 0:67.1-10.el9_6 | [RLSA-2025:12083](https://patchblox.com/security/data/fix/linux/rlsa-2025-12083.md) | Oct 4, 2025 |
| Linux | icu sles 15.6 | 65.1-150200.4.15.1 | [SUSE-SU-2025:02079-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-02079-1.md) | Jun 24, 2025 |
| Linux | icu sles 15.7 | 65.1-150200.4.15.1 | [SUSE-SU-2025:02079-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-02079-1.md) | Jun 24, 2025 |
| Linux | icu-debuginfo amzn 2023 | 67.1-7.amzn2023.0.4 | [ALAS2023-2025-1057](https://patchblox.com/security/data/fix/linux/alas2023-2025-1057.md) | Jul 3, 2025 |
| Linux | icu-debugsource amzn 2023 | 67.1-7.amzn2023.0.4 | [ALAS2023-2025-1057](https://patchblox.com/security/data/fix/linux/alas2023-2025-1057.md) | Jul 3, 2025 |
| Linux | libicu RHEL 9 | 0:67.1-10.el9_6 | [RHSA-2025:12083](https://patchblox.com/security/data/fix/linux/rhsa-2025-12083.md) | Jul 29, 2025 |
| Linux | libicu almalinux 10 | 74.2-5.el10_0 | [ALSA-2025:11888](https://patchblox.com/security/data/fix/linux/alsa-2025-11888.md) | Jul 28, 2025 |
| Linux | libicu almalinux 9 | 67.1-10.el9_6 | [ALSA-2025:12083](https://patchblox.com/security/data/fix/linux/alsa-2025-12083.md) | Jul 29, 2025 |
| Linux | libicu amzn 2023 | 67.1-7.amzn2023.0.4 | [ALAS2023-2025-1057](https://patchblox.com/security/data/fix/linux/alas2023-2025-1057.md) | Jul 3, 2025 |
| Linux | libicu ol 10 | 0:74.2-5.el10_0 | [ELSA-2025-11888](https://patchblox.com/security/data/fix/linux/elsa-2025-11888.md) | Jul 28, 2025 |
| Linux | libicu ol 9 | 0:67.1-10.el9_6 | [ELSA-2025-12083](https://patchblox.com/security/data/fix/linux/elsa-2025-12083.md) | Jul 29, 2025 |
| Linux | libicu-debuginfo amzn 2023 | 67.1-7.amzn2023.0.4 | [ALAS2023-2025-1057](https://patchblox.com/security/data/fix/linux/alas2023-2025-1057.md) | Jul 3, 2025 |
| Linux | libicu-devel RHEL 9 | 0:67.1-10.el9_6 | [RHSA-2025:12083](https://patchblox.com/security/data/fix/linux/rhsa-2025-12083.md) | Jul 29, 2025 |
| Linux | libicu-devel almalinux 10 | 74.2-5.el10_0 | [ALSA-2025:11888](https://patchblox.com/security/data/fix/linux/alsa-2025-11888.md) | Jul 28, 2025 |
| Linux | libicu-devel almalinux 9 | 67.1-10.el9_6 | [ALSA-2025:12083](https://patchblox.com/security/data/fix/linux/alsa-2025-12083.md) | Jul 29, 2025 |
| Linux | libicu-devel amzn 2023 | 67.1-7.amzn2023.0.4 | [ALAS2023-2025-1057](https://patchblox.com/security/data/fix/linux/alas2023-2025-1057.md) | Jul 3, 2025 |
| Linux | libicu-devel ol 10 | 0:74.2-5.el10_0 | [ELSA-2025-11888](https://patchblox.com/security/data/fix/linux/elsa-2025-11888.md) | Jul 28, 2025 |
| Linux | libicu-devel ol 9 | 0:67.1-10.el9_6 | [ELSA-2025-12083](https://patchblox.com/security/data/fix/linux/elsa-2025-12083.md) | Jul 29, 2025 |
| Linux | libicu-devel-debuginfo amzn 2023 | 67.1-7.amzn2023.0.4 | [ALAS2023-2025-1057](https://patchblox.com/security/data/fix/linux/alas2023-2025-1057.md) | Jul 3, 2025 |
| Linux | libicu-doc amzn 2023 | 67.1-7.amzn2023.0.4 | [ALAS2023-2025-1057](https://patchblox.com/security/data/fix/linux/alas2023-2025-1057.md) | Jul 3, 2025 |

---

Data as of 2026-11-08T13:06:02Z 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

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.