CVE-2026-2100
P11-kit: null dereference via c_derivekey with specific null parameters
CVSS Score
5.3
EPSS Score
1.2%
EPSS Percentile
64th
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.
| CWE | CWE-824 |
| Vendor | p11-glue |
| Product | p11-kit |
| Published | Mar 26, 2026 |
| Last Updated | Jul 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
p11-glue / p11-kit
0 < 0.26.2
Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Cost Management Metrics Operator 4
All versions affected Red Hat / Red Hat Hardened Images
All versions affected Red Hat / Red Hat Insights proxy 1.5
All versions affected Red Hat / Red Hat Update Infrastructure 5
All versions affected Red Hat / Red Hat Update Infrastructure 5
All versions affected Red Hat / Red Hat Update Infrastructure 5
All versions affected Red Hat / Red Hat Update Infrastructure 5
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat OpenShift Container Platform 4
All versions affected Red Hat / Red Hat OpenShift Container Platform 4
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2026:18143 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:18599 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:21275 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:22634 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:27998 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:7065 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-2100 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2437308 github.com: https://github.com/p11-glue/p11-kit/pull/740 github.com: https://github.com/p11-glue/p11-kit/releases/tag/0.26.2
Credits
This issue was discovered by Zoltan Fridrich (Red Hat).