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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2022-50274

media: dvbdev: adopts refcnt to avoid UAF

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: media: dvbdev: adopts refcnt to avoid UAF dvb_unregister_device() is known that prone to use-after-free. That is, the cleanup from dvb_unregister_device() releases the dvb_device even if there are pointers stored in file->private_data still refer to it. This patch adds a reference counter into struct dvb_device and delays its deallocation until no pointer refers to the object.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < ac521bbe3d00fa574e66a9361763f2b37725bc97affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 219b44bf94203bd433aa91b7796475bf656348e5affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 6d18b44bb44e1f4d97dfe0efe92ac0f0984739c2affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 2abd73433872194bccdf1432a0980e4ec5273c2aaffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 88a6f8a72d167294c0931c7874941bf37a41b6ddaffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < a2f0a08aa613176c9688c81d7b598a7779974991affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 9945d05d6693710574f354c5dbddc47f5101eb77affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 0fc044b2b5e2d05a1fa1fb0d7f270367a7855d79affected

Linux Linux

Default version status: affected

  • 2.6.12affected
  • 0 to < 2.6.12unaffected
  • 4.14.303 to ≤ 4.14.*unaffected
  • 4.19.270 to ≤ 4.19.*unaffected
  • 5.4.229 to ≤ 5.4.*unaffected
  • 5.10.163 to ≤ 5.10.*unaffected
  • 5.15.86 to ≤ 5.15.*unaffected
  • 6.0.16 to ≤ 6.0.*unaffected
  • 6.1.2 to ≤ 6.1.*unaffected
  • 6.2 to ≤ *unaffected

References