In the Linux kernel, the following vulnerability has been resolved:
drm/vkms: Fix memory leak in vkms_init()
A memory leak was reported after the vkms module install failed.
unreferenced object 0xffff88810bc28520 (size 16):
comm "modprobe", pid 9662, jiffies 4298009455 (age 42.590s)
hex dump (first 16 bytes):
01 01 00 64 81 88 ff ff 00 00 dc 0a 81 88 ff ff ...d............
backtrace:
[<00000000e7561ff8>] kmalloc_trace+0x27/0x60
[<000000000b1954a0>] 0xffffffffc45200a9
[<00000000abbf1da0>] do_one_initcall+0xd0/0x4f0
[<000000001505ee87>] do_init_module+0x1a4/0x680
[<00000000958079ad>] load_module+0x6249/0x7110
[<00000000117e4696>] __do_sys_finit_module+0x140/0x200
[<00000000f74b12d2>] do_syscall_64+0x35/0x80
[<000000008fc6fcde>] entry_SYSCALL_64_after_hwframe+0x46/0xb0
The reason is that the vkms_init() returns without checking the return
value of vkms_create(), and if the vkms_create() failed, the config
allocated at the beginning of vkms_init() is leaked.
vkms_init()
config = kmalloc(...) # config allocated
...
return vkms_create() # vkms_create failed and config is leaked
Fix this problem by checking return value of vkms_create() and free the
config if error happened.
References
Configurations
Configuration 1 (hide)
|
History
03 Dec 2025, 18:17
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| References | () https://git.kernel.org/stable/c/07ab77154d6fd2d67e465ab5ce30083709950f02 - Patch | |
| References | () https://git.kernel.org/stable/c/0d0b368b9d104b437e1f4850ae94bdb9a3601e89 - Patch | |
| References | () https://git.kernel.org/stable/c/bad13de764888b765ceaa4668893b52bd16653cc - Patch | |
| References | () https://git.kernel.org/stable/c/bebd60ec3bf21062f103e32e6203c6daabdbd51b - Patch | |
| CWE | CWE-401 | |
| First Time |
Linux
Linux linux Kernel |
|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
Information
Published : 2025-09-15 15:15
Updated : 2025-12-03 18:17
NVD link : CVE-2022-50269
Mitre link : CVE-2022-50269
CVE.ORG link : CVE-2022-50269
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-401
Missing Release of Memory after Effective Lifetime