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Revert musl patches: - 246f1c811448f37a44b41cd8df8d0ef9736d95f4 - 25e6fee27f4a293728dd15b659170e7b9c7db9bc - 7c41047285a24a97e700b4fb5b6b69f4505e2d82 - 718f363bc2067b6487900eddc9180c84e7739f80 In upstream musl, these patches replace the explicit LFS64 symbols with dynamic linker symbol lookups, which wasi-libc doesn't have. To preserve compatibility with existing code using these symbols, revert these patches in wasi-libc.
Backport another part of the revert of 25e6fee27f4a293728dd15b659170e7b9c7db9bc.
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Apply the [first patch] to fix CVE-2025-26519: >From e5adcd97b5196e29991b524237381a0202a60659 Mon Sep 17 00:00:00 2001 From: Rich Felker <dalias@aerifal.cx> Date: Sun, 9 Feb 2025 10:07:19 -0500 Subject: [PATCH] iconv: fix erroneous input validation in EUC-KR decoder as a result of incorrect bounds checking on the lead byte being decoded, certain invalid inputs which should produce an encoding error, such as "\xc8\x41", instead produced out-of-bounds loads from the ksc table. in a worst case, the loaded value may not be a valid unicode scalar value, in which case, if the output encoding was UTF-8, wctomb would return (size_t)-1, causing an overflow in the output pointer and remaining buffer size which could clobber memory outside of the output buffer. bug report was submitted in private by Nick Wellnhofer on account of potential security implications. [first patch]: https://www.openwall.com/lists/musl/2025/02/13/1/1
Apply the [second patch] to fix CVE-2025-26519: >From c47ad25ea3b484e10326f933e927c0bc8cded3da Mon Sep 17 00:00:00 2001 From: Rich Felker <dalias@aerifal.cx> Date: Wed, 12 Feb 2025 17:06:30 -0500 Subject: [PATCH] iconv: harden UTF-8 output code path against input decoder bugs the UTF-8 output code was written assuming an invariant that iconv's decoders only emit valid Unicode Scalar Values which wctomb can encode successfully, thereby always returning a value between 1 and 4. if this invariant is not satisfied, wctomb returns (size_t)-1, and the subsequent adjustments to the output buffer pointer and remaining output byte count overflow, moving the output position backwards, potentially past the beginning of the buffer, without storing any bytes. [second patch]: https://www.openwall.com/lists/musl/2025/02/13/1/2
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This release includes various fixes and features, including: * Fix for too conservative incremental builds WebAssembly/wasi-libc@eadb436 * Opt-in busywait mode for futexes WebAssembly/wasi-libc#562 * Musl update from 1.2.3 to 1.2.5 WebAssembly/wasi-libc#557
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See the WHATSNEW file for details.