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ecryptfs: Replace strcpy with strscpy in ecryptfs_set_default_crypt_stat_vals

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strcpy() has been deprecated [1] because it performs no bounds checking
on the destination buffer, which can lead to buffer overflows. Replace
it with the safer strscpy().

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy [1]
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Tyler Hicks <code@tyhicks.com>
This commit is contained in:
Thorsten Blum 2025-12-13 12:04:50 +01:00 committed by Tyler Hicks
parent 5c31c9bf9e
commit 3bdc6cace2
1 changed files with 2 additions and 1 deletions
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3
fs/ecryptfs/crypto.c
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@ -20,6 +20,7 @@
#include <linux/file.h>
#include <linux/scatterlist.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/unaligned.h>
#include <linux/kernel.h>
#include <linux/xattr.h>
@ -645,7 +646,7 @@ static void ecryptfs_set_default_crypt_stat_vals(
ecryptfs_copy_mount_wide_flags_to_inode_flags(crypt_stat,
mount_crypt_stat);
ecryptfs_set_default_sizes(crypt_stat);
strcpy(crypt_stat->cipher, ECRYPTFS_DEFAULT_CIPHER);
strscpy(crypt_stat->cipher, ECRYPTFS_DEFAULT_CIPHER);
crypt_stat->key_size = ECRYPTFS_DEFAULT_KEY_BYTES;
crypt_stat->flags &= ~(ECRYPTFS_KEY_VALID);
crypt_stat->file_version = ECRYPTFS_FILE_VERSION;