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.
References
Configurations
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History
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Information
Published : 2025-10-04 16:15
Updated : 2026-01-22 19:57
NVD link : CVE-2022-50499
Mitre link : CVE-2022-50499
CVE.ORG link : CVE-2022-50499
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-415
Double Free
