Description
International Components for Unicode (ICU) for C/C++ before 2017-02-13 has an out-of-bounds write caused by a heap-based buffer overflow related to the utf8TextAccess function in common/utext.cpp and the utext_moveIndex32* function.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | icu | 57.1-6 | — |
| Debian 13 | icu | 57.1-6 | — |
| Debian 12 | icu | 57.1-6 | — |
| Debian 8 | icu | 52.1-8+deb8u5 | DSA-3830-1 |
| Debian 7 | icu | 4.8.1.1-12+deb7u7 | DLA-947-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | icu | 55.1-7ubuntu0.2 | USN-3274-1 |
| Ubuntu 14.04 LTS | icu | 52.1-3ubuntu0.6 | USN-3274-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | icu | 52.1-8.7.1 | SUSE-SU-2018:1401-1 |
| SLES 12 SP2 | icu | 52.1-8.7.1 | SUSE-SU-2018:1401-2, SUSE-SU-2018:1401-1 |
| SLES 12 SP1 | icu | 52.1-8.7.1 | SUSE-SU-2018:1401-1 |
| SLES 12 | icu | 52.1-8.7.1 | SUSE-SU-2018:1401-1 |
| SLES 11 SP4 | icu | 4.0-47.6.1 | SUSE-SU-2018:1602-1 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | icu | 52.1-8.7.1 | SUSE-SU-2018:1401-1 |
| SLES for SAP 12 SP2 | icu | 52.1-8.7.1 | SUSE-SU-2018:1401-1 |
| SLES for SAP 12 SP1 | icu | 52.1-8.7.1 | SUSE-SU-2018:1401-1 |
| SLES for SAP 11 SP4 | icu | 4.0-47.6.1 | SUSE-SU-2018:1602-1 |
| SUSE OpenStack Cloud 7 | icu | 52.1-8.7.1 | SUSE-SU-2018:1401-1 |
| SUSE Enterprise Storage 4 | icu | 52.1-8.7.1 | SUSE-SU-2018:1401-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | icu | 58.2-r2 | — |
| Alpine v3.23 | icu | 58.2-r2 | — |
| Alpine v3.22 | icu | 58.2-r2 | — |
| Alpine v3.21 | icu | 58.2-r2 | — |
| Alpine v3.20 | icu | 58.2-r2 | — |
Show 18 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | icu | 58.2-r2 | — |
| Alpine v3.18 | icu | 58.2-r2 | — |
| Alpine v3.17 | icu | 58.2-r2 | — |
| Alpine v3.16 | icu | 58.2-r2 | — |
| Alpine v3.15 | icu | 58.2-r2 | — |
| Alpine v3.14 | icu | 58.2-r2 | — |
| Alpine v3.13 | icu | 58.2-r2 | — |
| Alpine v3.12 | icu | 58.2-r2 | — |
| Alpine v3.11 | icu | 58.2-r2 | — |
| Alpine v3.10 | icu | 58.2-r2 | — |
| Alpine v3.9 | icu | 58.2-r2 | — |
| Alpine v3.8 | icu | 58.2-r2 | — |
| Alpine v3.7 | icu | 58.2-r2 | — |
| Alpine v3.6 | icu | 58.2-r2 | — |
| Alpine v3.5 | icu | 57.1-r3 | — |
| Alpine v3.4 | icu | 57.1-r3 | — |
| Alpine v3.3 | icu | 56.1-r2 | — |
| Alpine v3.2 | icu | 55.1-r3 | — |
Advisories 8
- USN-3274-1 icu vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-947-1 icu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3830-1 icu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2018:1602-1 Security update for icu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1401-1 Security update for icu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1401-2 Security update for icu SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-2355 International Components for Unicode (icu): Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 26, 2025
- WID-SEC-2025-1660 Oracle Utilities: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 28, 2025