MediumFix available
drm/amdkfd: Check for potential null return of kmalloc_array()
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Check for potential null return of kmalloc_array() As the kmalloc_array() may return null, the 'event_waiters[i].wait' would lead to null-pointer dereference. Therefore, it is better to check the return value of kmalloc_array() to avoid this confusion.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 4.14.276, 4.19.239, 4.9.311, 5.10.112, 5.15.35, 5.17.4, 5.4.190
- CVEs
- CVE-2022-49055
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 03:17 UTC · Revision 1
Source evidence
drm/amdkfd: Check for potential null return of kmalloc_array()
core-osv · Original sourcePublished 26 Feb 2025, 01:54 UTC
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Check for potential null return of kmalloc_array() As the kmalloc_array() may return null, the 'event_waiters[i].wait' would lead to null-pointer dereference. Therefore, it is better to check the return value of kmalloc_array() to avoid this confusion.
osv:CVE-2022-49055
Kernel
Fixed versions: 4.9.311, 4.14.276, 4.19.239, 5.4.190, 5.10.112, 5.15.35, 5.17.4
Complete source record
{
"id": "bd8e78e6494f9a4e35dd5be329808ae231cb69a7409398e48359f7ba2d03cc7f",
"url": "https://osv.dev/vulnerability/CVE-2022-49055",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "drm/amdkfd: Check for potential null return of kmalloc_array()",
"summary": "In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Check for potential null return of kmalloc_array() As the kmalloc_array() may return null, the 'event_waiters[i].wait' would lead to null-pointer dereference. Therefore, it is better to check the return value of kmalloc_array() to avoid this confusion.",
"evidence": "osv:CVE-2022-49055",
"products": [
{
"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.9.311",
"evidence": "/affected/1/ranges"
},
{
"value": "4.14.276",
"evidence": "/affected/1/ranges"
},
{
"value": "4.19.239",
"evidence": "/affected/1/ranges"
},
{
"value": "5.4.190",
"evidence": "/affected/1/ranges"
},
{
"value": "5.10.112",
"evidence": "/affected/1/ranges"
},
{
"value": "5.15.35",
"evidence": "/affected/1/ranges"
},
{
"value": "5.17.4",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "CVE-2022-49055",
"aliases": [
"CVE-2022-49055"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "f3a398183f7b9ef78f6b71ee9f7641e046403bcb"
},
{
"fixed": "32cf90a521dcc0f136db7ee5ba32bfe5f79e460e"
},
{
"fixed": "40bf32dbfef866c83a3e74800b81d79e52b6d20b"
},
{
"fixed": "94869bb0de69a812f70231b0eb480bb2f7ae73a6"
},
{
"fixed": "c7a268b33882d5feaafd29c1734456f41ba41396"
},
{
"fixed": "1d7a5aae884ca727d41c7ed15d4c82fdb67c040c"
},
{
"fixed": "f2658d5966bcee8c3eb487875f459756d4f7cdfc"
},
{
"fixed": "0a692c625e373fef692ffbc7fc41f8a025f01cb7"
},
{
"fixed": "ebbb7bb9e80305820dc2328a371c1b35679f2667"
}
]
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49055.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.2.0"
},
{
"fixed": "4.9.311"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.10.0"
},
{
"fixed": "4.14.276"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.15.0"
},
{
"fixed": "4.19.239"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.20.0"
},
{
"fixed": "5.4.190"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.5.0"
},
{
"fixed": "5.10.112"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.11.0"
},
{
"fixed": "5.15.35"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.16.0"
},
{
"fixed": "5.17.4"
}
]
}
],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49055.json"
}
}
],
"modified": "2026-10-28T02:30:42.093320011Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/0a692c625e373fef692ffbc7fc41f8a025f01cb7",
"https://git.kernel.org/stable/c/1d7a5aae884ca727d41c7ed15d4c82fdb67c040c",
"https://git.kernel.org/stable/c/32cf90a521dcc0f136db7ee5ba32bfe5f79e460e",
"https://git.kernel.org/stable/c/40bf32dbfef866c83a3e74800b81d79e52b6d20b",
"https://git.kernel.org/stable/c/94869bb0de69a812f70231b0eb480bb2f7ae73a6",
"https://git.kernel.org/stable/c/c7a268b33882d5feaafd29c1734456f41ba41396",
"https://git.kernel.org/stable/c/ebbb7bb9e80305820dc2328a371c1b35679f2667",
"https://git.kernel.org/stable/c/f2658d5966bcee8c3eb487875f459756d4f7cdfc",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49055.json",
"https://nvd.nist.gov/vuln/detail/CVE-2022-49055",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49055.json"
}
},
"related_cves": [
{
"value": "CVE-2022-49055",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 509784,
"published_at": "2025-02-26T01:54:27.771+00:00"
}