CVE-2022-50331
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: wwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new() Inject fault while probing module, if device_register() fails, but the refcount of kobject is not decreased to 0, the name allocated in dev_set_name() is leaked. Fix this by calling put_device(), so that name can be freed in callback function kobject_cleanup(). unreferenced object 0xffff88810152ad20 (size 8): comm "modprobe", pid 252, jiffies 4294849206 (age 22.713s) hex dump (first 8 bytes): 68 77 73 69 6d 30 00 ff hwsim0.. backtrace: [<000000009c3504ed>] __kmalloc_node_track_caller+0x44/0x1b0 [<00000000c0228a5e>] kvasprintf+0xb5/0x140 [<00000000cff8c21f>] kvasprintf_const+0x55/0x180 [<0000000055a1e073>] kobject_set_name_vargs+0x56/0x150 [<000000000a80b139>] dev_set_name+0xab/0xe0
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-09-15 15:15:45.310000
Last modified
2026-11-05 20:17:35.303000
View original CVE JSON
{
"id": "CVE-2022-50331",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-09-15T15:15:45.310",
"lastModified": "2026-11-05T20:17:35.303",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()\n\nInject fault while probing module, if device_register() fails,\nbut the refcount of kobject is not decreased to 0, the name\nallocated in dev_set_name() is leaked. Fix this by calling\nput_device(), so that name can be freed in callback function\nkobject_cleanup().\n\nunreferenced object 0xffff88810152ad20 (size 8):\n comm \"modprobe\", pid 252, jiffies 4294849206 (age 22.713s)\n hex dump (first 8 bytes):\n 68 77 73 69 6d 30 00 ff hwsim0..\n backtrace:\n [<000000009c3504ed>] __kmalloc_node_track_caller+0x44/0x1b0\n [<00000000c0228a5e>] kvasprintf+0xb5/0x140\n [<00000000cff8c21f>] kvasprintf_const+0x55/0x180\n [<0000000055a1e073>] kobject_set_name_vargs+0x56/0x150\n [<000000000a80b139>] dev_set_name+0xab/0xe0"
}
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"affected": [
{
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"affectedData": [
{
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"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/net/wwan/wwan_hwsim.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"versionType": "original_commit_for_fix",
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"metrics": {
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"type": "Primary",
"cvssData": {
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"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
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],
"ssvcV203": [
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"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"timestamp": "2026-11-05T20:10:07.483628Z",
"id": "CVE-2022-50331",
"options": [
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{
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"role": "CISA Coordinator",
"version": "2.0.3"
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"weaknesses": [
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"source": "[email protected]",
"type": "Primary",
"description": [
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"value": "CWE-401"
}
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"configurations": [
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