Question: What is CVE-2025-21671?
Answer: CVE-2025-21671 is a vulnerability classified as high with a CVSS score of 7.8. It falls under CWE-416, CWE-416 and affects the system as follows: In the Linux kernel, the following vulnerability has been resolved:

zram: fix potential UAF of zram table

If zram_meta_alloc failed early, it frees allocated zram->table without
setting it NULL.  Which will potentially cause zram_meta_free to access
the table if user reset an failed and uninitialized device.