Red HatCVE-2026-68743
Red Hat SSSD: out-of-bounds read
Medium5.5CVE-2026-68743 · Published Aug 4, 2026 · updated Aug 31, 2026
A flaw was found in SSSD. The extract_authtok_v1() function in the PAM responder does not validate the auth_token_length field against the remaining buffer size before processing. A local attacker can exploit this via a crafted protocol v1 request to the PAM responder socket, causing an out-of-bounds read and process crash, resulting in a 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:L/UI:N/S:U/C:N/I:N/A:H
- 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 |
|---|---|---|---|
| Aug 4 | Red Hat Enterprise Linux 10: server-side request forgery | Medium5.4 | 5.80 |
| Aug 4 | Red Hat Enterprise Linux 10: out-of-bounds read | Medium6.5 | 5.80 |
| Aug 4 | Red Hat Build of Keycloak: improper signature check | Low3.7 | No fix yet |
| Aug 4 | Red Hat popt: code execution | Low2.5 | No fix yet |
| Aug 4 | Red Hat SSSD: uninitialized resource | Low3.3 | No fix yet |
| Aug 4 | Red Hat Enterprise Linux: heap buffer overflow | High7.3 | No fix yet |