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Don't crash on invalid input

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This commit is contained in:
Isaac 2026-02-13 18:10:06 +04:00
parent fe8d847408
commit 09d3f7386b
1 changed files with 3 additions and 1 deletions
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4
submodules/MtProtoKit/Sources/MTProto.m
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@ -1807,7 +1807,9 @@ static const NSUInteger MTMaxUnacknowledgedMessageCount = 64;
NSData *messageKey = [is readData:16];
MTMessageEncryptionKey *encryptionKey = [MTMessageEncryptionKey messageEncryptionKeyV2ForAuthKey:effectiveAuthKey.authKey messageKey:messageKey toClient:true];
if (data.length <= 24) {
return;
}
NSMutableData *encryptedMessageData = [is readMutableData:(data.length - 24)];
while (encryptedMessageData.length % 16 != 0) {
[encryptedMessageData setLength:encryptedMessageData.length - 1];