FKIE_CVE-2026-2100

Vulnerability from fkie_nvd - Published: 2026-03-26 21:17 - Updated: 2026-06-17 10:30
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A flaw was found in p11-kit. A remote attacker could exploit this vulnerability by calling the C_DeriveKey function on a remote token with specific IBM kyber or IBM btc derive mechanism parameters set to NULL. This could lead to the RPC-client attempting to return an uninitialized value, potentially resulting in a NULL dereference or undefined behavior. This issue may cause an application level denial of service or other unpredictable system states.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:18143
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:18599
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:21275
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:22634
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:7065
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-2100Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2437308Issue Tracking, Vendor Advisory
secalert@redhat.comhttps://github.com/p11-glue/p11-kit/pull/740Issue Tracking, Patch
Impacted products
Vendor Product Version
p11-kit_project p11-kit -
redhat hardened_images -
redhat enterprise_linux 9.0
redhat enterprise_linux 10.0
To clipboard 

{
  "affected": [
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          "vendor": "Red Hat"
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          "cpes": [
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          "product": "Red Hat Enterprise Linux 7",
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        },
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          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ],
          "defaultStatus": "unaffected",
          "packageName": "rhcos",
          "product": "Red Hat OpenShift Container Platform 4",
          "vendor": "Red Hat"
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
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          "cpeMatch": [
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in p11-kit. A remote attacker could exploit this vulnerability by calling the C_DeriveKey function on a remote token with specific IBM kyber or IBM btc derive mechanism parameters set to NULL. This could lead to the RPC-client attempting to return an uninitialized value, potentially resulting in a NULL dereference or undefined behavior. This issue may cause an application level denial of service or other unpredictable system states."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 una falla en p11-kit. Un atacante remoto podr\u00eda explotar esta vulnerabilidad al llamar a la funci\u00f3n C_DeriveKey en un token remoto con par\u00e1metros espec\u00edficos del mecanismo de derivaci\u00f3n IBM kyber o IBM btc establecidos en NULL. Esto podr\u00eda llevar al cliente RPC intentando devolver un valor no inicializado, resultando potencialmente en una desreferencia NULL o comportamiento indefinido. Este problema puede causar una denegaci\u00f3n de servicio a nivel de aplicaci\u00f3n o a otros estados impredecibles del sistema."
    }
  ],
  "id": "CVE-2026-2100",
  "lastModified": "2026-06-17T10:30:18.943",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
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          "attackVector": "NETWORK",
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          "privilegesRequired": "NONE",
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          "userInteraction": "NONE",
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          "timestamp": "2026-03-26T20:30:34.453809Z",
          "version": "2.0.3"
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  "published": "2026-03-26T21:17:04.247",
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}


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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.


Detection rules are retrieved from Rulezet.