CVE-2026-104042: Out-of-bounds Read in Red Hat Red Hat Enterprise Linux 10
Description
CVE-2026-104042 is a vulnerability in the sssd component of Red Hat Enterprise Linux 10. A local attacker can trigger a denial of service by sending a crafted PAM request with a zero-length authentication token, causing an out-of-bounds read and crashing the PAM responder. This flaw results from missing input validation when processing the token.
CVSS v3.1
Score 5.5medium
Affected software
Red Hat
Red Hat Enterprise Linux 10
Red Hat
Red Hat Enterprise Linux 6
Red Hat
Red Hat Enterprise Linux 7
Red Hat
Red Hat Enterprise Linux 8
Red Hat
Red Hat Enterprise Linux 9
Red Hat
Red Hat OpenShift Container Platform 4
Red Hat
Red Hat OpenShift Container Platform 4
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds read in sssd on Red Hat Enterprise Linux 10. When a local attacker sends a PAM request containing a zero-length authentication token to the responder socket, the service attempts to read beyond the buffer boundaries due to lack of input validation. This leads to a crash of the PAM responder, resulting in a denial of service condition.
Potential Impact
The impact is a denial of service (DoS) caused by the PAM responder crashing. There is no confidentiality or integrity impact reported. The attack requires local access with low privileges and does not require user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-104042 for current remediation guidance. Until a patch is available, restrict local access to trusted users to mitigate risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-10-01T17:24:28.457Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-104042","vendor":"Red Hat"}]
Threat ID: 6ac450002cdf04f6566c70da
Added to database: 10/06/2026, 01:33:52 UTC
Last enriched: 10/06/2026, 01:48:25 UTC
Last updated: 10/06/2026, 01:48:25 UTC
Views: 5
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