CVE-2026-120749: Red Hat Enterprise Linux 10 · Reachable Assertion
Affects Red Hat Enterprise Linux 10Source CVE Database V5
Mentioned vulnerabilities
Not known to be exploited · CVSS 6.2 Medium.
Data as of 6 Nov 2026, 07:08 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 6.2 |
|---|
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 6 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10dbus | Affected– | Fixed in– |
| Red Hat Enterprise Linux 6dbus | Affected– | Fixed in– |
| Red Hat Enterprise Linux 7dbus | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8dbus | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9dbus | Affected– | Fixed in– |
| Red Hat Hardened Imagesdbus | Affected– | Fixed in– |
AI-suggested
The vulnerability can only be triggered if a privileged monitoring process such as dbus-monitor or busctl monitor is active on the same dbus-daemon instance. Since attaching such a monitoring client requires root or equivalent privileges, limiting or disabling unnecessary monitoring processes reduces exposure. No fixed release is currently available; monitor Red Hat advisories for patch updates. No other mitigations are currently documented.
Description
CVE-2026-120749 is a denial of service vulnerability in D-Bus on Red Hat Enterprise Linux 10. An unprivileged local user can cause the dbus-daemon to abort when a driver-originated broadcast message cannot be delivered to a recipient, triggering an assertion failure. This issue arises when a privileged monitoring client is attached and is a residual problem from an incomplete fix for CVE-2023-34969. No fixed release has been published yet.
References
- access.redhat.com/security/cve/CVE-2026-120749 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2567978 (opens in a new tab)
- gitlab.freedesktop.org/dbus/dbus/-/merge_requests/565 (opens in a new tab)
- gitlab.freedesktop.org/dbus/dbus/-/merge_requests/592 (opens in a new tab)
- gitlab.freedesktop.org/dbus/dbus/-/work_items/576 (opens in a new tab)