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Affected Component
Analysis
musl
Patched
Name
CVE-2026-40200
Description
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).
CWEs
Published Date
Updated Date
Workaround
-
Advisories
Analysis#
Vulnerability Ratings#
8.1
CVSSv31
NaN
other
Others affected components#
Resolved with patches#
musl (buildroot:2025.02.x)
#
Title
Author
Resolve
1
qsort: fix leonardo heap corruption from bug in doubleword
Rich Felker <dalias@aerifal.cx>
CVE-2026-40200
2
qsort: hard-preclude oob array writes independent of any
Rich Felker <dalias@aerifal.cx>
CVE-2026-40200
3
qsort: fix shift UB in shl and shr
Luca Kellermann <mailto.luca.kellermann@gmail.com>
CVE-2026-40200
musl (buildroot:master)
#
Title
Author
Resolve
1
qsort: fix leonardo heap corruption from bug in doubleword
Rich Felker <dalias@aerifal.cx>
CVE-2026-40200
2
qsort: hard-preclude oob array writes independent of any
Rich Felker <dalias@aerifal.cx>
CVE-2026-40200
3
qsort: fix shift UB in shl and shr
Luca Kellermann <mailto.luca.kellermann@gmail.com>
CVE-2026-40200