CVE-2021-47088: linux kernel vulnerability

CVE-2021-47088: linux kernel vulnerability

In the Linux kernel, the following vulnerability has been resolved: mm/damon/dbgfs: protect targets destructions with kdamond_lock DAMON debugfs interface iterates current monitoring targets in 'dbgfs_target_ids_read()' while holding the corresponding 'kdamond_lock'. However, it also destructs the monitoring targets in 'dbgfs_before_terminate()' without holding the lock. This can result in a use_after_free bug. This commit avoids the race by protecting the destruction with the corresponding 'kdamond_lock'.

CVSS

7.0 HIGH

EPSS

11.66%

Aktywnie wykorzystywana

brak w KEV

Produkt

linux kernel