CVE-2019-9857

2019-03-2100:00:00

ubuntu.com

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

4.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:N/I:N/A:C

0.001 Low

EPSS

Percentile

31.0%

JSON

In the Linux kernel through 5.0.2, the function
inotify_update_existing_watch() in fs/notify/inotify/inotify_user.c
neglects to call fsnotify_put_mark() with IN_MASK_CREATE after
fsnotify_find_mark(), which will cause a memory leak (aka refcount leak).
Finally, this will cause a denial of service.