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wolfssl: patch CVE-2026-5778
Backport commit from the PR[1] mentioned in the nvd[2] [1]https://github.com/wolfSSL/wolfssl/pull/10125 [2]https://nvd.nist.gov/vuln/detail/CVE-2026-5778 Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com> Signed-off-by: Anuj Mittal <anuj.mittal@oss.qualcomm.com>
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@@ -0,0 +1,38 @@
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From 0eee2c2d172a28dc9159211d0d22323c980a48f4 Mon Sep 17 00:00:00 2001
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From: Kareem <kareem@wolfssl.com>
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Date: Thu, 2 Apr 2026 16:41:55 -0700
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Subject: [PATCH] Add sz check to ChachaAEADDecrypt to prevent potential
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underflow.
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Thanks to Zou Dikai for the report.
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(cherry picked from commit 5b6b138964058ab8d30474bc9fdfb5ffcb3a4726)
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CVE: CVE-2026-5778
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Upstream-Status: Backport [https://github.com/wolfSSL/wolfssl/commit/5b6b138964058ab8d30474bc9fdfb5ffcb3a4726]
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Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
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---
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src/internal.c | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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diff --git a/src/internal.c b/src/internal.c
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index 6af03cbf0..40d1dd7cc 100644
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--- a/src/internal.c
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+++ b/src/internal.c
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@@ -19310,10 +19310,15 @@ int ChachaAEADDecrypt(WOLFSSL* ssl, byte* plain, const byte* input,
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byte tag[POLY1305_AUTH_SZ];
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byte poly[CHACHA20_256_KEY_SIZE]; /* generated key for mac */
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int ret = 0;
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- int msgLen = (sz - ssl->specs.aead_mac_size);
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+ int msgLen = 0;
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Keys* keys = &ssl->keys;
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byte* seq = NULL;
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+ if (sz < ssl->specs.aead_mac_size) {
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+ return BAD_FUNC_ARG;
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+ }
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+ msgLen = (sz - ssl->specs.aead_mac_size);
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+
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#ifdef CHACHA_AEAD_TEST
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int i;
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printf("input before decrypt :\n");
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@@ -46,6 +46,7 @@ SRC_URI = " \
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file://CVE-2026-5447.patch \
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file://CVE-2026-5447.patch \
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file://CVE-2026-5772-1.patch \
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file://CVE-2026-5772-1.patch \
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file://CVE-2026-5772-2.patch \
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file://CVE-2026-5772-2.patch \
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file://CVE-2026-5778.patch \
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"
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"
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SRCREV = "b077c81eb635392e694ccedbab8b644297ec0285"
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SRCREV = "b077c81eb635392e694ccedbab8b644297ec0285"
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