Description
A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.12.x stable branch <= 1.12.18, and dbus-1.10.x and older branches <= 1.10.30 when a system has multiple usernames sharing the same UID. When a set of policy rules references these usernames, D-Bus may free some memory in the heap, which is still used by data structures necessary for the other usernames sharing the UID, possibly leading to a crash or other undefined behaviors
References (4)
Core 4
Core References
Issue Tracking, Third Party Advisory x_refsource_misc
https://bugs.gentoo.org/755392
Issue Tracking x_refsource_misc
https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128
Issue Tracking x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1909101
Third Party Advisory x_refsource_misc
https://security-tracker.debian.org/tracker/CVE-2020-35512
Scores
CVSS v3
7.8
EPSS
0.0033
EPSS Percentile
25.0%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-416
Status
published
Products (1)
freedesktop/dbus
1.12.20
Published
Feb 15, 2021
Tracked Since
Feb 18, 2026