RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 06:48:12 +00:00
Code Issues Activity Actions

LibC: open/openat: Make sure path is not a nullptr before dereferencing

Browse source 
open and openat both try to get the length of the path string. When
the path was a nullptr, strlen tried to dereference it, causing a
segfault.
This commit is contained in:
Till Mayer 2019-11-13 20:21:46 +01:00 • committed by Andreas Kling
parent dd1996ca68
commit 00e56cda0c
1 changed files with 8 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

8
Libraries/LibC/unistd.cpp
View file

@ -202,6 +202,10 @@ int openat_with_path_length(int dirfd, const char* path, size_t path_length, int
int open(const char* path, int options, ...)
{
if (!path) {
errno = EFAULT;
return -1;
}
va_list ap;
va_start(ap, options);
auto mode = (mode_t)va_arg(ap, unsigned);
@ -211,6 +215,10 @@ int open(const char* path, int options, ...)
int openat(int dirfd, const char* path, int options, ...)
{
if (!path) {
errno = EFAULT;
return -1;
}
va_list ap;
va_start(ap, options);
auto mode = (mode_t)va_arg(ap, unsigned);