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[Network] Clear buffer before use.

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Clean unix address buffer before use : more robust to bad user addresses missing trailing '\0',
 and prevents leaking data

Change-Id: I769b895327f97870886309a7054facd3c169fb7f
Reviewed-on: https://review.haiku-os.org/c/haiku/+/10052
Reviewed-by: Adrien Destugues <[email protected]>
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: waddlesplash <[email protected]>
This commit is contained in:
Sylvain Kerjean
2025-12-04 19:25:48 +00:00
committed by waddlesplash
parent 85ced2a68e
commit 3b7038d884
1 changed files with 1 additions and 0 deletions
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src/system/kernel/fs/socket.cpp
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@@ -1099,6 +1099,7 @@ _user_sendto(int socket, const void *data, size_t length, int flags,
// copy address from userland // copy address from userland
char address[MAX_SOCKET_ADDRESS_LENGTH]; char address[MAX_SOCKET_ADDRESS_LENGTH];
memset(address, 0, MAX_SOCKET_ADDRESS_LENGTH);
if (userAddress != NULL) { if (userAddress != NULL) {
if (!IS_USER_ADDRESS(userAddress) if (!IS_USER_ADDRESS(userAddress)
|| user_memcpy(address, userAddress, addressLength) != B_OK) { || user_memcpy(address, userAddress, addressLength) != B_OK) {