CVE-2026-104029 Sssd: sssd: denial of service via out-of-bounds read in autofs responder
A local attacker can crash the SSSD autofs responder via a crafted request, causing a denial of service on affected Linux systems.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-104029?
CVE-2026-104029 is a low-severity denial of service vulnerability in Redhat Enterprise Linux, published on 5 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in SSSD. A local attacker can exploit this vulnerability by sending a specially crafted request to the autofs responder UNIX socket. Due to improper buffer offset calculation during request parsing, the service performs an out-of-bounds memory read. This flaw can cause the autofs responder process to crash, resulting in a denial of service (DoS).
Weakness: CWE-125
Which versions are affected by CVE-2026-104029?
It affects 3 products.
Products include Fedoraproject Sssd, Redhat Enterprise Linux, Redhat Openshift Container Platform.
How do I fix CVE-2026-104029?
No fix has been published for CVE-2026-104029 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-104029 being exploited?
There is no known exploitation of CVE-2026-104029 in the wild and no public exploit code.
Other vulnerabilities in Redhat Enterprise Linux
Sources
Also known as DEBIAN-CVE-2026-104029, GHSA-2chf-ff75-p482, UBUNTU-CVE-2026-104029.