Description
Stack-based buffer overflow in the ures_getByKeyWithFallback function in common/uresbund.cpp in International Components for Unicode (ICU) before 54.1 for C/C++ allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted uloc_getDisplayName call.
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 | 55.1-3 | — |
| Debian 13 | icu | 55.1-3 | — |
| Debian 12 | icu | 55.1-3 | — |
| 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 | android +1 | No fix yet | — |
| Ubuntu 16.04 LTS | icu | 55.1-7ubuntu0.1 | USN-3227-1 |
| Ubuntu 14.04 LTS | icu | 52.1-3ubuntu0.5 | USN-3227-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP4 | icu | 4.0-43.1 | SUSE-SU-2017:0256-1, SUSE-RU-2018:0028-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 11 SP4 | icu | 4.0-43.1 | SUSE-SU-2017:0256-1, SUSE-RU-2018:0028-1 |
Advisories 6
- 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
- SUSE-RU-2018:0028-1 Recommended update for icu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0256-1 Security update for icu SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-1660 Oracle Utilities: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 28, 2025
References
- http://bugs.icu-project.org/trac/changeset/35699
- https://bugzilla.redhat.com/show_bug.cgi?id=1383569
- 1037556 vdb-entry
- 94520 vdb-entry
- [oss-security] 20161124 Re: CVE request: icu: stack-based buffer overflow in uloc_getDisplayName mailing-list
- https://bugs.php.net/bug.php?id=67397
- http://bugs.icu-project.org/trac/ticket/1089
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html