CVE-2022-50274
Published: Sep 15, 2025
Modified: May 11, 2026
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - < ac521bbe3d00fa574e66a9361763f2b37725bc97affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - < 219b44bf94203bd433aa91b7796475bf656348e5affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - < 6d18b44bb44e1f4d97dfe0efe92ac0f0984739c2affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - < 2abd73433872194bccdf1432a0980e4ec5273c2aaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - < 88a6f8a72d167294c0931c7874941bf37a41b6dd+3 more versions |
Linux | Linux | affected 2.6.12unaffected 0 - < 2.6.12unaffected 4.14.303 - <= 4.14.*unaffected 4.19.270 - <= 4.19.*unaffected 5.4.229 - <= 5.4.*+5 more versions |
References
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