CVE-2020-36777 media: dvbdev: Fix memory leak in dvb_media_device_free()

2024-02-2718:40:26

Linux

www.cve.org

linux kernel

memory leak

dvbdev

dvb_media_device_free

6 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

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

media: dvbdev: Fix memory leak in dvb_media_device_free()

dvb_media_device_free() is leaking memory. Free dvbdev->adapter->conn
before setting it to NULL, as documented in include/media/media-device.h:
“The media_entity instance itself must be freed explicitly by the driver
if required.”

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/media/dvb-core/dvbdev.c"
    ],
    "versions": [
      {
        "version": "0230d60e4661",
        "lessThan": "06854b943e05",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0230d60e4661",
        "lessThan": "32168ca1f123",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0230d60e4661",
        "lessThan": "cd89f79be5d5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0230d60e4661",
        "lessThan": "9185b3b1c143",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0230d60e4661",
        "lessThan": "43263fd43083",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0230d60e4661",
        "lessThan": "9ad15e214fcd",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0230d60e4661",
        "lessThan": "cede24d13be6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0230d60e4661",
        "lessThan": "bf9a40ae8d72",
        "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/media/dvb-core/dvbdev.c"
    ],
    "versions": [
      {
        "version": "4.5",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.5",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.9.269",
        "lessThanOrEqual": "4.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.14.233",
        "lessThanOrEqual": "4.14.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.191",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.118",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.36",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.11.20",
        "lessThanOrEqual": "5.11.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.12.3",
        "lessThanOrEqual": "5.12.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.13",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]