CVE-2024-27072 media: usbtv: Remove useless locks in usbtv_video_free()

2024-05-0113:04:34

Linux

www.cve.org

cve-2024-27072

media

usbtv

remove useless locks

linux kernel

deadlock

7.5 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.0%

JSON

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

media: usbtv: Remove useless locks in usbtv_video_free()

Remove locks calls in usbtv_video_free() because
are useless and may led to a deadlock as reported here:
https://syzkaller.appspot.com/x/bisect.txt?x=166dc872180000
Also remove usbtv_stop() call since it will be called when
unregistering the device.

Before ‘c838530d230b’ this issue would only be noticed if you
disconnect while streaming and now it is noticeable even when
disconnecting while not streaming.

[hverkuil: fix minor spelling mistake in log message]

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/media/usb/usbtv/usbtv-video.c"
    ],
    "versions": [
      {
        "version": "f3d27f34fdd7",
        "lessThan": "3e7d82ebb86e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f3d27f34fdd7",
        "lessThan": "65e6a2773d65",
        "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/usb/usbtv/usbtv-video.c"
    ],
    "versions": [
      {
        "version": "3.11",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.11",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8.2",
        "lessThanOrEqual": "6.8.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]