CVE-2026-2100

MEDIUM

P11-kit: p11-kit: null dereference via c_derivekey with specific null parameters

Title source: cna
STIX 2.1

Description

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 (8)

Core 8
Core References
Vendor Advisory vendor-advisory x_refsource_redhat
RHSA-2026:21275
https://access.redhat.com/errata/RHSA-2026:21275
Vendor Advisory vendor-advisory x_refsource_redhat
RHSA-2026:22634
https://access.redhat.com/errata/RHSA-2026:22634
Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-2100
Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat
RHBZ#2437308
https://bugzilla.redhat.com/show_bug.cgi?id=2437308
Vendor Advisory vendor-advisory x_refsource_redhat
RHSA-2026:7065
https://access.redhat.com/errata/RHSA-2026:7065
Vendor Advisory vendor-advisory x_refsource_redhat
RHSA-2026:18143
https://access.redhat.com/errata/RHSA-2026:18143
Vendor Advisory vendor-advisory x_refsource_redhat
RHSA-2026:18599
https://access.redhat.com/errata/RHSA-2026:18599

Scores

CVSS v3 5.3
EPSS 0.0102
EPSS Percentile 58.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-824
Status published
Products (19)
p11-kit_project/p11-kit
Red Hat/Red Hat Enterprise Linux 10
Red Hat/Red Hat Enterprise Linux 10 0:0.26.2-1.el10
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 Enterprise Linux 9 0:0.26.2-1.el9
Red Hat/Red Hat Hardened Images
Red Hat/Red Hat Hardened Images 0.26.2-1.1.hum1
... and 9 more
Published Mar 26, 2026
Tracked Since Mar 27, 2026