Description
Stack-based buffer overflow in the Locale class in common/locid.cpp in International Components for Unicode (ICU) through 57.1 for C/C++ allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a long locale string.
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 | 57.1-5 | — |
| Debian 13 | icu | 57.1-5 | — |
| Debian 12 | icu | 57.1-5 | — |
| Debian 8 | icu | 52.1-8+deb8u4 | DSA-3725-1 |
| Debian 7 | icu | 4.8.1.1-12+deb7u6 | DLA-744-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | icu | 55.1-7ubuntu0.1 | USN-3227-1 |
| Ubuntu 14.04 LTS | icu | 52.1-3ubuntu0.5 | USN-3227-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | icu | 58.1-r1 | — |
| Alpine v3.23 | icu | 58.1-r1 | — |
| Alpine v3.22 | icu | 58.1-r1 | — |
| Alpine v3.21 | icu | 58.1-r1 | — |
| Alpine v3.20 | icu | 58.1-r1 | — |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | icu | 58.1-r1 | — |
| Alpine v3.18 | icu | 58.1-r1 | — |
| Alpine v3.17 | icu | 58.1-r1 | — |
| Alpine v3.16 | icu | 58.1-r1 | — |
| Alpine v3.15 | icu | 58.1-r1 | — |
| Alpine v3.14 | icu | 58.1-r1 | — |
| Alpine v3.13 | icu | 58.1-r1 | — |
| Alpine v3.12 | icu | 58.1-r1 | — |
| Alpine v3.11 | icu | 58.1-r1 | — |
| Alpine v3.10 | icu | 58.1-r1 | — |
| Alpine v3.9 | icu | 58.1-r1 | — |
| Alpine v3.8 | icu | 58.1-r1 | — |
| Alpine v3.7 | icu | 58.1-r1 | — |
| Alpine v3.6 | icu | 58.1-r1 | — |
| Alpine v3.5 | icu | 57.1-r2 | — |
Advisories 4
- USN-3227-1 icu vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-744-1 icu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3725-1 icu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2025-1660 Oracle Utilities: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 28, 2025