CVE-2022-50274 — media: dvbdev: adopts refcnt to avoid UAF
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. Th…
Published: 2025-09-15 · CVSS: 7.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7