musl: A security flaw has been discovered in musl libc up to 1.2.6
CVE-2026-6042 is fixed in musl on 1 platform, first by DEBIAN-CVE-2026-6042, released April 10, 2026. It is not reported as exploited. Patch Radar priority: Routine.
A security flaw has been discovered in musl libc up to 1.2.6. Affected is the function iconv of the file src/locale/iconv.c of the component GB18030 4-byte Decoder. Performing a manipulation results in inefficient algorithmic complexity. The attack must be initiated from a local position. To fix this issue, it is recommended to deploy a patch.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| musl · Debian 13.5 (trixie) | 1.2.5-3.1~deb13u1 | DEBIAN-CVE-2026-6042 | Apr 10, 2026 |
| musl · Debian 14 | 1.2.5-3.1 | DEBIAN-CVE-2026-6042 | Apr 10, 2026 |
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