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prionPRIOn knowledge basePRION:CVE-2021-47088
HistoryMar 04, 2024 - 6:15 p.m.

Spoofing

2024-03-0418:15:00
PRIOn knowledge base
www.prio-n.com
1
linux kernel
damon debugfs
vulnerability
use_after_free
kdamond_lock

7.4 High

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.1%

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’.

7.4 High

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.1%