CVE-2026-2100
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.16% probability · 65th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-824
- Affected
- p11-kit project/p11-kit · redhat/hardened images · redhat/enterprise linux
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2026:18143
- https://access.redhat.com/errata/RHSA-2026:18599
- https://access.redhat.com/errata/RHSA-2026:21275
- https://access.redhat.com/errata/RHSA-2026:22634
- https://access.redhat.com/errata/RHSA-2026:27998
- https://access.redhat.com/errata/RHSA-2026:58981
- https://access.redhat.com/errata/RHSA-2026:7065
- https://access.redhat.com/security/cve/CVE-2026-2100Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2437308Issue Tracking, Vendor Advisory
- https://github.com/p11-glue/p11-kit/pull/740Issue Tracking, Patch
- https://github.com/p11-glue/p11-kit/releases/tag/0.26.2
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.