fkie_cve-2022-50269
Vulnerability from fkie_nvd
Published
2025-09-15 15:15
Modified
2025-09-15 15:22
Severity ?
Summary
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
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vkms: Fix memory leak in vkms_init()\n\nA memory leak was reported after the vkms module install failed.\n\nunreferenced object 0xffff88810bc28520 (size 16):\n comm \"modprobe\", pid 9662, jiffies 4298009455 (age 42.590s)\n hex dump (first 16 bytes):\n 01 01 00 64 81 88 ff ff 00 00 dc 0a 81 88 ff ff ...d............\n backtrace:\n [\u003c00000000e7561ff8\u003e] kmalloc_trace+0x27/0x60\n [\u003c000000000b1954a0\u003e] 0xffffffffc45200a9\n [\u003c00000000abbf1da0\u003e] do_one_initcall+0xd0/0x4f0\n [\u003c000000001505ee87\u003e] do_init_module+0x1a4/0x680\n [\u003c00000000958079ad\u003e] load_module+0x6249/0x7110\n [\u003c00000000117e4696\u003e] __do_sys_finit_module+0x140/0x200\n [\u003c00000000f74b12d2\u003e] do_syscall_64+0x35/0x80\n [\u003c000000008fc6fcde\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThe reason is that the vkms_init() returns without checking the return\nvalue of vkms_create(), and if the vkms_create() failed, the config\nallocated at the beginning of vkms_init() is leaked.\n\n vkms_init()\n config = kmalloc(...) # config allocated\n ...\n return vkms_create() # vkms_create failed and config is leaked\n\nFix this problem by checking return value of vkms_create() and free the\nconfig if error happened."
}
],
"id": "CVE-2022-50269",
"lastModified": "2025-09-15T15:22:27.090",
"metrics": {},
"published": "2025-09-15T15:15:37.707",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/07ab77154d6fd2d67e465ab5ce30083709950f02"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/0d0b368b9d104b437e1f4850ae94bdb9a3601e89"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/bad13de764888b765ceaa4668893b52bd16653cc"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/bebd60ec3bf21062f103e32e6203c6daabdbd51b"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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