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CVE-2026-12610 (GCVE-0-2026-12610)

Vulnerability from cvelistv5 – Published: 2026-06-30 08:27 – Updated: 2026-08-31 18:09
VLAI
Title
Sssd: use-after-free crash in sssd' 'sssd_pam' process
Summary
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.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-30 12:44 UTC
CWE
  • CWE-825 - Expired Pointer Dereference
References
Date Public
2026-06-09 12:00
Show details on NVD website

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              "vendor": "Red Hat"
            },
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              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:9"
              ],
              "defaultStatus": "affected",
              "packageName": "pam",
              "product": "Red Hat Enterprise Linux 9",
              "vendor": "Red Hat"
            },
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              "cpes": [
                "cpe:/a:redhat:hummingbird:1"
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              "defaultStatus": "unaffected",
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              "product": "Red Hat Hardened Images",
              "vendor": "Red Hat"
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            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:openshift:4"
              ],
              "defaultStatus": "affected",
              "packageName": "openshift/ose-rhel-coreos-8",
              "product": "Red Hat OpenShift Container Platform 4",
              "vendor": "Red Hat"
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              "defaultStatus": "affected",
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              "product": "Red Hat OpenShift Container Platform 4",
              "vendor": "Red Hat"
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          ],
          "datePublic": "2026-06-09T12:00:00.000Z",
          "descriptions": [
            {
              "lang": "en",
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                "content": {
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                "baseScore": 6.4,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
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          "providerMetadata": {
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              ],
              "url": "https://access.redhat.com/security/cve/CVE-2026-12610"
            },
            {
              "name": "RHBZ#2490288",
              "tags": [
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                "x_refsource_REDHAT"
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              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2490288"
            },
            {
              "url": "https://github.com/SSSD/sssd/issues/8796"
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          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-06-18T11:29:05.155Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-06-09T12:00:00.000Z",
              "value": "Made public."
            }
          ],
          "title": "Sssd: use-after-free crash in sssd\u0027 \u0027sssd_pam\u0027 process",
          "workarounds": [
            {
              "lang": "en",
              "value": "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."
            }
          ],
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-825: Expired Pointer Dereference"
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      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-12610",
        "datePublished": "2026-06-30T08:27:01.504Z",
        "dateReserved": "2026-06-18T11:34:05.237Z",
        "dateUpdated": "2026-08-31T18:09:54.958Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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