CVE-2026-2100 (GCVE-0-2026-2100)
Vulnerability from cvelistv5 – Published: 2026-03-26 20:01 – Updated: 2026-10-14 19:24
VLAI
EPSS
VEX
Title
P11-kit: null dereference via c_derivekey with specific null parameters
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.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-26 20:30 UTC
CWE
- CWE-824 - Access of Uninitialized Pointer
Assigner
References
19 references
Impacted products
27 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| p11-glue | p11-kit |
Affected:
0 , < 0.26.2
(semver)
|
guessed | |
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:0.26.2-1.el10 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
||
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:0.26.2-1.el9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos |
||
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.17 |
Unaffected:
1791371080 , < *
(rpm)
cpe:/a:redhat:cert_manager:1.17::el9 |
||
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.17 |
Unaffected:
1791371069 , < *
(rpm)
cpe:/a:redhat:cert_manager:1.17::el9 |
||
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.17 |
Unaffected:
1791788287 , < *
(rpm)
cpe:/a:redhat:cert_manager:1.17::el9 |
||
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.17 |
Unaffected:
1791970484 , < *
(rpm)
cpe:/a:redhat:cert_manager:1.17::el9 |
||
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.18 |
Unaffected:
1791459707 , < *
(rpm)
cpe:/a:redhat:cert_manager:1.18::el9 |
||
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.18 |
Unaffected:
1791459711 , < *
(rpm)
cpe:/a:redhat:cert_manager:1.18::el9 |
||
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.18 |
Unaffected:
1791459759 , < *
(rpm)
cpe:/a:redhat:cert_manager:1.18::el9 |
||
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.18 |
Unaffected:
1789029076 , < *
(rpm)
cpe:/a:redhat:cert_manager:1.18::el9 |
||
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.18 |
Unaffected:
1791966259 , < *
(rpm)
cpe:/a:redhat:cert_manager:1.18::el9 |
||
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.20 |
Unaffected:
1790598593 , < *
(rpm)
cpe:/a:redhat:cert_manager:1.20::el9 |
||
| Red Hat | Cost Management 4 |
Unaffected:
1780946239 , < *
(rpm)
cpe:/a:redhat:cost_management:4::el9 |
||
| Red Hat | Red Hat Hardened Images |
Unaffected:
0.26.2-1.1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
||
| Red Hat | Red Hat Insights proxy 1.5 |
Unaffected:
1780420428 , < *
(rpm)
cpe:/a:redhat:insights_proxy:1.5::el9 |
||
| Red Hat | Red Hat Update Infrastructure 5 |
Unaffected:
1779798159 , < *
(rpm)
cpe:/a:redhat:rhui:5::el9 |
||
| Red Hat | Red Hat Update Infrastructure 5 |
Unaffected:
1779798164 , < *
(rpm)
cpe:/a:redhat:rhui:5::el9 |
||
| Red Hat | Red Hat Update Infrastructure 5 |
Unaffected:
1779798165 , < *
(rpm)
cpe:/a:redhat:rhui:5::el9 |
||
| Red Hat | Red Hat Update Infrastructure 5 |
Unaffected:
1779798222 , < *
(rpm)
cpe:/a:redhat:rhui:5::el9 |
||
| Red Hat | Red Hat Update Infrastructure 5 |
Unaffected:
1787241211 , < *
(rpm)
cpe:/a:redhat:rhui:5::el9 |
||
| Red Hat | Red Hat Update Infrastructure 5 |
Unaffected:
1787135742 , < *
(rpm)
cpe:/a:redhat:rhui:5::el9 |
||
| Red Hat | Red Hat Update Infrastructure 5 |
Unaffected:
1787241260 , < *
(rpm)
cpe:/a:redhat:rhui:5::el9 |
||
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
||
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
||
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
||
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
Date Public
2026-02-06 08:08
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"name": "RHSA-2026:82354",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:82354"
},
{
"name": "RHSA-2026:82372",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:82372"
},
{
"name": "RHSA-2026:82857",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:82857"
},
{
"name": "RHSA-2026:82888",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:82888"
},
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-2100"
},
{
"name": "RHBZ#2437308",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2437308"
},
{
"url": "https://github.com/p11-glue/p11-kit/pull/740"
},
{
"url": "https://github.com/p11-glue/p11-kit/releases/tag/0.26.2"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-02-06T12:02:49.002Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-02-06T08:08:00.000Z",
"value": "Made public."
}
],
"title": "P11-kit: null dereference via c_derivekey with specific null parameters",
"workarounds": [
{
"lang": "en",
"value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."
}
],
"x_generator": {
"engine": "cvelib 1.8.0"
},
"x_redhatCweChain": "CWE-824: Access of Uninitialized Pointer"
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2026-2100",
"datePublished": "2026-03-26T20:01:46.174Z",
"dateReserved": "2026-02-06T12:05:50.501Z",
"dateUpdated": "2026-10-14T19:24:02.035Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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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.