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Back to active CVEs
Medium · CVSS 6.4CVE-2026-12610

Sssd: use-after-free crash in sssd' 'sssd_pam' processCVE-2026-12610

Answer in brief

CVE-2026-12610 records a Medium severity (CVSS 6.4) vulnerability in Sssd: use-after-free crash in sssd' 'sssd_pam' process. The current sources do not mark it as known exploited. The current feed maps Red Hat/openshift/ose-rhel-coreos-8 (generic), Red Hat/openshift/ose-rhel-coreos-9 (generic), Red Hat/pam (generic), Red Hat/sssd (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 30, 2026Updated Nov 4, 2026Source checked Nov 4, 2026First seen by HOL Jun 30, 2026Material review Nov 4, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.4
Exploitation
Not marked as known exploited
Affected software
8 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 6.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/openshift/ose-rhel-coreos-8 (generic), Red Hat/openshift/ose-rhel-coreos-9 (generic), Red Hat/pam (generic), Red Hat/sssd (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:fedoraproject:sssd:-:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/openshift/ose-rhel-coreos-8generic*Not reported
Red Hat/openshift/ose-rhel-coreos-9generic*Not reported
Red Hat/pamgeneric*Not reported
Red Hat/sssdgeneric*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/openshift/ose-rhel-coreos-8, Red Hat/openshift/ose-rhel-coreos-9, Red Hat/pam.
  2. 2Review the reported fix. Source-reported workaround: Configure the sssd systemd service to automatically restart on failure. This ensures authentication remains available even if an attacker triggers the denial-of-service crash.

Evidence timeline and material changes

  1. Published upstream

    Jun 30, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Jun 30, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
  • GitHub security advisorygithub.com
Upstream source description

A flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free vulnerability, where a memory pointer is incorrectly handled. A local attacker could exploit this flaw by manipulating smartcard or YubiKey contents, leading to a denial of service that disrupts authentication. This vulnerability also presents a potential for privilege escalation, although it is difficult to exploit.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Guest access to Firecracker process memory after a failed memory discardAlso CWE-825

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-825
Source
CVE List V5
Source checked
Nov 4, 2026
References
3 linked sources
Open source record