lib/mbedtls
1
0
Fork 0
mirror of https://github.com/Mbed-TLS/mbedtls.git synced 2025-07-29 11:41:15 +03:00
Code Activity

Merge pull request #1349 from felixc-arm/pem-integer-underflow-3.6

Browse Source 
[3.6] Fix Integer Underflow when Decoding PEM Keys
This commit is contained in:
David Horstmann
2025-06-04 14:36:35 +01:00
committed by GitHub
parent d9c141749b 42323eacc9
commit 3f82706cb7
3 changed files with 13 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
library/pem.c
View File

@ -243,7 +243,10 @@ exit:
#if defined(MBEDTLS_DES_C) || defined(MBEDTLS_AES_C)
static int pem_check_pkcs_padding(unsigned char *input, size_t input_len, size_t *data_len)
{
/* input_len > 0 is guaranteed by mbedtls_pem_read_buffer(). */
/* input_len > 0 is not guaranteed by mbedtls_pem_read_buffer(). */
if (input_len < 1) {
return MBEDTLS_ERR_PEM_INVALID_DATA;
}
size_t pad_len = input[input_len - 1];
size_t i;