Use After Free in Freedesktop Dbus

CVE-2020-35512

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 rul…

Vulnerability class: Use-After-Free

EPSS: 0.003 (25.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Freedesktop Dbus — versions 1.12.20
  • Linux Linux_kernel
  • N/a Dbus-1.10.x And Older Branches (Eol) — versions <= 1.10.30 (Fixed: 1.10.32)
  • N/a Dbus-1.12.x Stable Branch — versions <= 1.12.18 (Fixed: >= 1.12.20)
  • N/a D-bus Development Branch — versions <= 1.13.16 (Fixed: >= 1.13.18)

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-35512?
CVE-2020-35512 is a high-severity vulnerability in Freedesktop Dbus, classified under Use After Free. CVSS score: 7.8/10. Published 2021-02-15.
How severe is CVE-2020-35512?
High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2020-35512 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.