Red HatCVE-2026-90994
Red Hat sssd: out-of-bounds read
Medium4.0CVE-2026-90994 · Published Sep 14, 2026 · updated Sep 16, 2026
A flaw was found in sssd, specifically within the PAM (Pluggable Authentication Modules) responder's protocol v1 parser, pam_parse_in_data(). A local client with access to the PAM responder's UNIX socket can exploit this by negotiating protocol v1 and sending an empty or truncated PAM request body. This can trigger an out-of-bounds read, potentially causing the PAM responder to terminate or restart, leading to a local denial of service.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 6 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 7 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 8 Product | all versions | No fix yet |
| Red Hat Enterprise Linux 9 Product | all versions | No fix yet |
| Red Hat OpenShift Container Platform 4 Product | all versions | No fix yet |
| all versions | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-125
More Red Hat advisories
All Red Hat| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 14 | Red Hat Enterprise Linux 10: null pointer dereference | Medium5.5 | No fix yet |
| Sep 14 | Red Hat sssd. A local unprivileged user: denial of service | Medium4.0 | No fix yet |
| Sep 14 | Red Hat GIMP.: out-of-bounds write | High7.8 | No fix yet |
| Sep 14 | Red Hat sssd NSS responder: out-of-bounds read | Medium4.0 | No fix yet |
| Sep 14 | Red Hat GIMP: integer overflow | High7.8 | No fix yet |
| Sep 14 | Red Hat GIMP: heap buffer overflow | High7.8 | No fix yet |