CVE-2025-21671 Information

Description

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.

Reference

https://git.kernel.org/stable/c/212fe1c0df4a150fb6298db2cfff267ceaba5402 https://git.kernel.org/stable/c/571d3f6045cd3a6d9f6aec33b678f3ffe97582ef https://git.kernel.org/stable/c/902ef8f16d5ca77edc77c30656be54186c1e99b7 https://git.kernel.org/stable/c/fe3de867f94819ba0f28e035c0b0182150147d95