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cve416baaa9-dc9f-4396-8d5f-8c081fb06d67CVE-2021-47534
HistoryMay 24, 2024 - 3:15 p.m.

CVE-2021-47534

2024-05-2415:15:16
416baaa9-dc9f-4396-8d5f-8c081fb06d67
web.nvd.nist.gov
26
linux kernel
cve-2021-47534
drm/vc4
kms
vulnerability

6.8 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.0%

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

drm/vc4: kms: Add missing drm_crtc_commit_put

Commit 9ec03d7f1ed3 (“drm/vc4: kms: Wait on previous FIFO users before a
commit”) introduced a global state for the HVS, with each FIFO storing
the current CRTC commit so that we can properly synchronize commits.

However, the refcounting was off and we thus ended up leaking the
drm_crtc_commit structure every commit. Add a drm_crtc_commit_put to
prevent the leakage.

Affected configurations

Vulners
Node
linuxlinux_kernelRange5.125.15.7
OR
linuxlinux_kernelRange5.16.0

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/vc4/vc4_kms.c"
    ],
    "versions": [
      {
        "version": "9ec03d7f1ed3",
        "lessThan": "53f9601e908d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9ec03d7f1ed3",
        "lessThan": "049cfff8d53a",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/vc4/vc4_kms.c"
    ],
    "versions": [
      {
        "version": "5.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.12",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.7",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.16",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

6.8 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.0%