CVE-2023-34969: D-Bus before 1.15.6 sometimes allows unprivileged users to crash dbus-daemon

Q: How do I fix CVE-2023-34969?

dbus: upgrade to 1.12.28, 1.14.8, 1.15.6; fedora: mitigate or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2023-34969 being exploited?

CVE-2023-34969 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-34969 affect?

CVE-2023-34969 affects dbus, fedora, debian linux. Severity is medium (CVSS 6.5). D-Bus before 1.15.6 sometimes allows unprivileged users to crash dbus-daemon. If a privileged user with control over the dbus-daemon is using the org.freedesktop.DBus.Monitoring interface to monitor message bus traffic, then an unprivileged

Q: How urgent is CVE-2023-34969?

Priority 51/100. Public exploit reference; On your watchlist

This month

MEDIUM 6.5WATCHLISTUPGRADEMITIGATEMITIGATE

CVE-2023-34969 is a medium-severity flaw (CVSS 6.5) affecting dbus, fedora, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

D-Bus before 1.15.6 sometimes allows unprivileged users to crash dbus-daemon. If a privileged user with control over the dbus-daemon is using the org.freedesktop.DBus.Monitoring interface to monitor message bus traffic, then an unprivileged user with the ability to connect to the same dbus-daemon can cause a dbus-daemon crash under some circumstances via an unreplyable message. When done on the well-known system bus, this is a denial-of-service v

Why this priority

Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Weakness	CWE-404
Published	2023-06-08
Last modified	2026-10-15

Publisher (CNA): MITRE · Vendor: debian · fedoraproject · freedesktop

Last updated 2026-10-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-06-08 03:15 UTCPublished CVE record published
2026-10-15 00:16 UTCUpdated Record last modified

freedesktop dbus UPGRADE

Affected: >= 1.12.0 and < 1.12.28 · >= 1.14.0 and < 1.14.8 · >= 1.15.0 and < 1.15.6

Fixed in: 1.12.28, 1.14.8, 1.15.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy dbus || rpm -q dbus || dbus --version

2. UPGRADE to 1.12.28 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade dbus

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dbus

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

fedoraproject fedora MITIGATE

Affected: 38

Fixed in: no fixed release known

Safe to downgrade to: a release before 38

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

debian debian linux MITIGATE

Affected: 10.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-34969?

dbus: upgrade to 1.12.28, 1.14.8, 1.15.6; fedora: mitigate or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-34969 being exploited?

CVE-2023-34969 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-34969 affect?

CVE-2023-34969 affects dbus, fedora, debian linux. Severity is medium (CVSS 6.5). D-Bus before 1.15.6 sometimes allows unprivileged users to crash dbus-daemon. If a privileged user with control over the dbus-daemon is using the org.freedesktop.DBus.Monitoring interface to monitor message bus traffic, then an unprivileged

How urgent is CVE-2023-34969?

Priority 51/100. Public exploit reference; On your watchlist

Software pages

Debian vulnerabilities

Related CVEs

CVE-2022-42012 MEDIUM 6.5 UPGRADE MITIGATE An issue was discovered in D-Bus before 1.12.24, 1.13.x and 1.14.x before 1.14.4, and 1.15.x before 1.15.2
CVE-2022-42011 MEDIUM 6.5 UPGRADE MITIGATE An issue was discovered in D-Bus before 1.12.24, 1.13.x and 1.14.x before 1.14.4, and 1.15.x before 1.15.2
CVE-2022-42010 MEDIUM 6.5 UPGRADE MITIGATE An issue was discovered in D-Bus before 1.12.24, 1.13.x and 1.14.x before 1.14.4, and 1.15.x before 1.15.2
CVE-2020-35512 HIGH 7.8 MITIGATE A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.12.x stable branch <= 1.12.18,
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References

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