CVE-2021-47420 drm/amdkfd: fix a potential ttm->sg memory leak

2024-05-2115:04:08

Linux

github.com

linux kernel

drm/amdkfd

ttm->sg memory leak

6.9 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: fix a potential ttm->sg memory leak

Memory is allocated for ttm->sg by kmalloc in kfd_mem_dmamap_userptr,
but isn’t freed by kfree in kfd_mem_dmaunmap_userptr. Free it!

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "264fb4d332f5",
        "lessThan": "7e5ce6029b62",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "264fb4d332f5",
        "lessThan": "b072ef1215ac",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.14"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.14",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "5.14.12",
        "versionType": "custom",
        "lessThanOrEqual": "5.14.*"
      },
      {
        "status": "unaffected",
        "version": "5.15",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c"
    ],
    "defaultStatus": "affected"
  }
]