CVE-2026-104037 Sssd: sssd: denial of service via packet length underflow in autofs responder
A local attacker can cause a denial of service in the SSSD autofs responder by sending a crafted request that triggers an integer underflow and memory crash.
- 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-2026-104037?
CVE-2026-104037 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 6 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 issue by sending a specially crafted request with an invalid packet length to the autofs responder UNIX socket. This causes an integer underflow and an out-of-bounds memory read, which can crash the responder process and result in a denial of service (DoS).
Weakness: CWE-125
Which versions are affected by CVE-2026-104037?
How do I fix CVE-2026-104037?
No fix has been published for CVE-2026-104037 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-104037 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104037 exists.
Sources
Also known as DEBIAN-CVE-2026-104037, GHSA-c66h-w9px-9v6r, UBUNTU-CVE-2026-104037.