CVE-2026-6245
CVE-2026-6245 · Sssd: out-of-bounds read in the sssd
This page contains facts from public vulnerability sources. Check the original advisory before updating.
A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).
CVSS 5.5 · Medium · EPSS 0.1% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
red hat enterprise linux 10
No fix published
red hat enterprise linux 6
No fix published
red hat enterprise linux 7
No fix published
red hat enterprise linux 8
No fix published
red hat enterprise linux 9
No fix published
red hat openshift container platform 4
No fix published
sssd Debian:13
- Versions
- 2.10.1-2
- 2.11.1-1
- 2.11.1-2
- 2.11.1-2.1
- 2.12.0-1
- 2.12.0-2
- 2.12.0-3~exp0
- 2.12.0-4
- 2.13.1-1
- 2.13.1-2
- 2.13.1-3
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
sssd Ubuntu:24.04:LTS
- Versions
- 2.9.1-2ubuntu2
- 2.9.1-2ubuntu3
- 2.9.2-1ubuntu2
- 2.9.4-1ubuntu1
- 2.9.4-1.1ubuntu3
- 2.9.4-1.1ubuntu5
- 2.9.4-1.1ubuntu6
- 2.9.4-1.1ubuntu6.1
- 2.9.4-1.1ubuntu6.2
- 2.9.4-1.1ubuntu6.3
- 2.9.4-1.1ubuntu6.4
- Affected ranges
- ECOSYSTEM: < 2.9.4-1.1ubuntu6.5
Update to 2.9.4-1.1ubuntu6.5
sssd Ubuntu:25.10
- Versions
- 2.10.1-2ubuntu4
- 2.10.1-2ubuntu5
- 2.10.1-2ubuntu5.1
- Affected ranges
- ECOSYSTEM: < 2.10.1-2ubuntu5.2
Update to 2.10.1-2ubuntu5.2
sssd Ubuntu:26.04:LTS
- Versions
- 2.10.1-2ubuntu5
- 2.10.1-2ubuntu7
- 2.12.0-1ubuntu3
- 2.12.0-1ubuntu4
- 2.12.0-1ubuntu5
- Affected ranges
- ECOSYSTEM: < 2.12.0-1ubuntu5.1
Update to 2.12.0-1ubuntu5.1