musl: An issue was discovered in musl libc 0.7.10 through 1.2.6
CVE-2026-40200 is fixed in musl on 1 platform, first by DEBIAN-CVE-2026-40200, released April 10, 2026. It is not reported as exploited. Patch Radar priority: High.
An issue was discovered in musl libc 0.7.10 through 1.2.6. Stack-based memory corruption can occur during qsort of very large arrays, due to incorrectly implemented double-word primitives. The number of elements must exceed about seven million, i.e., the 32nd Leonardo number on 32-bit platforms (or the 64th Leonardo number on 64-bit platforms, which is not practical).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| musl · Debian 13.5 (trixie) | 1.2.5-3.1~deb13u1 | DEBIAN-CVE-2026-40200 | Apr 10, 2026 |
| musl · Debian 14 | 1.2.5-3.1 | DEBIAN-CVE-2026-40200 | Apr 10, 2026 |
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