Tracker / CVE-2022-50499
CVE-2022-50499
In the Linux kernel, the following vulnerability has been resolved: media: dvb-core: Fix double free in dvb_register_device() In function dvb_register_device() -> dvb_register_media_device() -> dvb_create_media_entity(), dvb->entity is allocated and initialized. If the initialization fails, it frees the dvb->entity, and return an error code. The caller takes the error code and handles the error by calling dvb_media_device_free(), which unregisters the entity and frees the field again if it is not NULL. As dvb->entity may not NULLed in dvb_create_media_entity() when the allocation of dvbdev->pad fails, a double free may occur. This may also cause an Use After free in media_device_unregister_entity(). Fix this by storing NULL to dvb->entity when it is freed.
Prodotti e versioni affette
| linux | linux_kernel · 4.14.147 → 4.14.303 |
|---|---|
| linux | linux_kernel · 4.19.77 → 4.19.270 |
| linux | linux_kernel · 4.9.195 → 4.9.337 |
| linux | linux_kernel · 5.11 → 5.15.87 |
| linux | linux_kernel · 5.16 → 6.0.18 |
| linux | linux_kernel · 5.2.19 → 5.3 |
| linux | linux_kernel · 5.3.4 → 5.4.229 |
| linux | linux_kernel · 5.5 → 5.10.163 |
| linux | linux_kernel · 6.1 → 6.1.4 |