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authorAzeem Shaikh <azeemshaikh38@gmail.com>2023-05-23 02:16:40 +0000
committerKees Cook <keescook@chromium.org>2023-06-01 07:07:37 -0700
commit2af4aa3be58802cf00f834eeaad1243290bb1d4a (patch)
treea257051661049f7ecedd1f0e79a0c45597da2893 /drivers/most/configfs.c
parentf4a0659f823e5a828ea2f45b4849ea8e2dd2984c (diff)
staging: most: Replace all non-returning strlcpy with strscpy
strlcpy() reads the entire source buffer first. This read may exceed the destination size limit. This is both inefficient and can lead to linear read overflows if a source string is not NUL-terminated [1]. In an effort to remove strlcpy() completely [2], replace strlcpy() here with strscpy(). No return values were used, so direct replacement is safe. [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy [2] https://github.com/KSPP/linux/issues/89 Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230523021640.2406585-1-azeemshaikh38@gmail.com
Diffstat (limited to 'drivers/most/configfs.c')
-rw-r--r--drivers/most/configfs.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/most/configfs.c b/drivers/most/configfs.c
index 27b0c923597f..36d8c917f65f 100644
--- a/drivers/most/configfs.c
+++ b/drivers/most/configfs.c
@@ -204,7 +204,7 @@ static ssize_t mdev_link_device_store(struct config_item *item,
{
struct mdev_link *mdev_link = to_mdev_link(item);
- strlcpy(mdev_link->device, page, sizeof(mdev_link->device));
+ strscpy(mdev_link->device, page, sizeof(mdev_link->device));
strim(mdev_link->device);
return count;
}
@@ -219,7 +219,7 @@ static ssize_t mdev_link_channel_store(struct config_item *item,
{
struct mdev_link *mdev_link = to_mdev_link(item);
- strlcpy(mdev_link->channel, page, sizeof(mdev_link->channel));
+ strscpy(mdev_link->channel, page, sizeof(mdev_link->channel));
strim(mdev_link->channel);
return count;
}
@@ -234,7 +234,7 @@ static ssize_t mdev_link_comp_store(struct config_item *item,
{
struct mdev_link *mdev_link = to_mdev_link(item);
- strlcpy(mdev_link->comp, page, sizeof(mdev_link->comp));
+ strscpy(mdev_link->comp, page, sizeof(mdev_link->comp));
strim(mdev_link->comp);
return count;
}
@@ -250,7 +250,7 @@ static ssize_t mdev_link_comp_params_store(struct config_item *item,
{
struct mdev_link *mdev_link = to_mdev_link(item);
- strlcpy(mdev_link->comp_params, page, sizeof(mdev_link->comp_params));
+ strscpy(mdev_link->comp_params, page, sizeof(mdev_link->comp_params));
strim(mdev_link->comp_params);
return count;
}