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ML-KEM/Kyber: fix out of bouds read

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Decompose 5-bit values: Don't read 15 bytes when only have 10 bytes
available.
This commit is contained in:
Sean Parkinson
2025-08-27 10:14:39 +10:00
parent 02cba85856
commit 4ff6f5f10c
2 changed files with 5 additions and 1 deletions
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1
.wolfssl_known_macro_extras
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@@ -206,6 +206,7 @@ ENABLE_SECURE_SOCKETS_LOGS
ESP32
ESP8266
ESP_ENABLE_WOLFSSH
ESP_IDF_VERSION
ESP_IDF_VERSION_MAJOR
ESP_IDF_VERSION_MINOR
ESP_PLATFORM

5
wolfcrypt/src/wc_mlkem_asm.S
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@@ -15779,7 +15779,10 @@ _mlkem_decompress_5_avx2:
vpmullw %ymm4, %ymm0, %ymm0
vpmulhrsw %ymm1, %ymm0, %ymm0
vmovdqu %ymm0, 448(%rdi)
vbroadcasti128 150(%rsi), %ymm0
vmovq 150(%rsi), %xmm0
movzxw 158(%rsi), %rdx
vpinsrq $0x01, %rdx, %xmm0, %xmm0
vinserti128 $0x01, %xmm0, %ymm0, %ymm0
vpshufb %ymm2, %ymm0, %ymm0
vpand %ymm3, %ymm0, %ymm0
vpmullw %ymm4, %ymm0, %ymm0