CVE-2026-128885
Dbus: stack out-of-bounds write in dbus _dbus_poll() select() fallback when file descriptor exceeds fd_setsize
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
A flaw was found in D-Bus. In configurations where the daemon falls back to using the Unix select() mechanism for event monitoring, it does not verify whether file descriptor numbers exceed allocated limits. A local attacker can exploit this flaw by opening a large number of concurrent connections to trigger an out-of-bounds write on the stack. This can cause the daemon to crash, resulting in a Denial of Service (DoS).
| CWE | CWE-121 |
| Vendor | red hat |
| Product | red hat enterprise linux 10 |
| Published | Nov 13, 2026 |
| Last Updated | Nov 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 10
All versions affected