diff options
| author | Kunwu Chan <chentao@kylinos.cn> | 2023-11-23 22:52:37 +0800 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2023-11-30 13:57:00 +0200 |
| commit | c72b9c33ef9695ad7ce7a6eb39a9df8a01b70796 (patch) | |
| tree | e8c389dd696f0d9cd4e479520fa13cf708969e54 | |
| parent | 1e5caee2ba8f1426e8098afb4ca38dc40a0ca71b (diff) | |
ARM: OMAP2+: Fix null pointer dereference and memory leak in omap_soc_device_init
kasprintf() returns a pointer to dynamically allocated memory which can
be NULL upon failure. When 'soc_dev_attr->family' is NULL,it'll trigger
the null pointer dereference issue, such as in 'soc_info_show'.
And when 'soc_device_register' fails, it's necessary to release
'soc_dev_attr->family' to avoid memory leaks.
Fixes: 6770b2114325 ("ARM: OMAP2+: Export SoC information to userspace")
Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Message-ID: <20231123145237.609442-1-chentao@kylinos.cn>
Signed-off-by: Tony Lindgren <tony@atomide.com>
| -rw-r--r-- | arch/arm/mach-omap2/id.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c index 98999aa8cc0c..7f387706368a 100644 --- a/arch/arm/mach-omap2/id.c +++ b/arch/arm/mach-omap2/id.c @@ -793,11 +793,16 @@ void __init omap_soc_device_init(void) soc_dev_attr->machine = soc_name; soc_dev_attr->family = omap_get_family(); + if (!soc_dev_attr->family) { + kfree(soc_dev_attr); + return; + } soc_dev_attr->revision = soc_rev; soc_dev_attr->custom_attr_group = omap_soc_groups[0]; soc_dev = soc_device_register(soc_dev_attr); if (IS_ERR(soc_dev)) { + kfree(soc_dev_attr->family); kfree(soc_dev_attr); return; } |