PT-2021-8177 · Linux+3 · Linux Kernel+3
Published
2021-09-13
·
Updated
2026-03-14
·
CVE-2021-47205
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to the clk component of the Linux kernel, where unbinding a CCU driver unmaps the device's MMIO region but leaves its clocks/resets and their providers registered. This can cause a page fault later when some clock operation tries to perform MMIO. The fix involves separating the CCU initialization from the memory allocation and using a devres callback to unregister the clocks and resets. This also fixes a memory leak of the
struct ccu reset and uses the correct owner for the clocks and resets.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Memory Leak
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linux Kernel
Red Os
Suse