The xc2028_set_config function in drivers/media/tuners/tuner-xc2028.c in the Linux kernel before 4.6 allows local users to gain privileges or cause a denial of service (use-after-free) via vectors involving omission of the firmware name from a certain data structure.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
| Link | Tags |
|---|---|
| http://source.android.com/security/bulletin/2016-11-01.html | third party advisory |
| https://access.redhat.com/errata/RHSA-2018:1062 | third party advisory vendor advisory |
| https://github.com/torvalds/linux/commit/8dfbcc4351a0b6d2f2d77f367552f48ffefafe18 | issue tracking third party advisory patch |
| https://access.redhat.com/errata/RHSA-2018:0676 | third party advisory vendor advisory |
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8dfbcc4351a0b6d2f2d77f367552f48ffefafe18 | issue tracking third party advisory patch |
| http://www.securityfocus.com/bid/94201 | vdb entry third party advisory |
| https://usn.ubuntu.com/3798-1/ | third party advisory vendor advisory |
| https://usn.ubuntu.com/3798-2/ | third party advisory vendor advisory |
| https://access.redhat.com/errata/RHSA-2019:1170 | third party advisory vendor advisory |
| https://access.redhat.com/errata/RHSA-2019:1190 | third party advisory vendor advisory |