CVE-2026-4046
Published: March 31, 2026Last modified: April 22, 2026
Description
The iconv() function in the GNU C Library versions 2.43 and earlier may crash due to an assertion failure when converting inputs from the IBM1390 or IBM1399 character sets, which may be used to remotely crash an application. This vulnerability can be trivially mitigated by removing the IBM1390 and IBM1399 character sets from systems that do not need them.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | glibc | Fixed (2.37.0-r23) |
| 25 LTS | glibc | Fixed (2.39.0-r8) | |
| Stream | glibc | Fixed (2.39.0-r9) | |
| Hardened Containers | 23 LTS | glibc | Fixed (2.37.0-r23) |
| 25 LTS | glibc | Not affected (2.39.0-r2) | |
| Stream | glibc | Not affected (2.37.0-r0) |