CVE-2020-35512

dbus: A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.12.x stable branch <= 1.12.18, a...

CVE-2020-35512 is fixed in 5 products on 1 platform, first by dbus 1.12.2-1ubuntu1.3, released February 15, 2021. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
n/a
Low
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0033
26th percentile

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

Where it's fixed

ProductFixed inFixReleased
Linux
dbus · Ubuntu 18.04.6 LTS (bionic) 1.12.2-1ubuntu1.3 dbus 1.12.2-1ubuntu1.3 Feb 15, 2021
dbus · Ubuntu 20.04 LTS (focal) 1.12.16-2ubuntu2.2 dbus 1.12.16-2ubuntu2.2 Feb 15, 2021
dbus-tests · Ubuntu 18.04.6 LTS (bionic) 1.12.2-1ubuntu1.3 dbus-tests 1.12.2-1ubuntu1.3 Feb 15, 2021
dbus-tests · Ubuntu 20.04 LTS (focal) 1.12.16-2ubuntu2.2 dbus-tests 1.12.16-2ubuntu2.2 Feb 15, 2021
dbus-user-session · Ubuntu 18.04.6 LTS (bionic) 1.12.2-1ubuntu1.3 dbus-user-session 1.12.2-1ubuntu1.3 Feb 15, 2021
dbus-user-session · Ubuntu 20.04 LTS (focal) 1.12.16-2ubuntu2.2 dbus-user-session 1.12.16-2ubuntu2.2 Feb 15, 2021
dbus-x11 · Ubuntu 18.04.6 LTS (bionic) 1.12.2-1ubuntu1.3 dbus-x11 1.12.2-1ubuntu1.3 Feb 15, 2021
dbus-x11 · Ubuntu 20.04 LTS (focal) 1.12.16-2ubuntu2.2 dbus-x11 1.12.16-2ubuntu2.2 Feb 15, 2021
libdbus-1-3 · Ubuntu 18.04.6 LTS (bionic) 1.12.2-1ubuntu1.3 libdbus-1-3 1.12.2-1ubuntu1.3 Feb 15, 2021
libdbus-1-3 · Ubuntu 20.04 LTS (focal) 1.12.16-2ubuntu2.2 libdbus-1-3 1.12.16-2ubuntu2.2 Feb 15, 2021

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