The wcsnrtombs function in all musl libc versions up to 1.2.1 has been found to have multiple bugs in the handling of the destination buffer size when limiting the input character count, which can lead to an infinite loop with no progress (no overflow) or to writing past the end of the destination buffer.
The wcsnrtombs function in all musl libc versions up to 1.2.1 has been found to have multiple bugs in the handling of the destination buffer size when limiting the input character count, which can lead to an infinite loop with no progress (no overflow) or to writing past the end of the destination buffer.
https://www.openwall.com/lists/oss-security/2020/11/20/4 https://git.musl-libc.org/cgit/musl/commit/?id=3ab2a4e02682df1382955071919d8aa3c3ec40d4
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