p11-kit rpc-message.c: C_DeriveKey null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in p11-kit. The affected element is the function C_DeriveKey of the file rpc-message.c:. Executing a manipulation can lead to null pointer dereference. This vulnerability is registered as CVE-2026-2100. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in p11-kit (version unknown). It has been declared as problematic. This vulnerability affects the function C_DeriveKey of the file rpc-message.c:. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

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.

The advisory is shared for download at bugzilla.redhat.com. This vulnerability was named CVE-2026-2100. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 298199 (Linux Distros Unpatched Vulnerability : CVE-2026-2100), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (298199), EUVD (EUVD-2026-16336) and CERT Bund (WID-SEC-2026-1267). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Red Hat Enterprise Linux
  • Fedora Linux
  • SUSE Linux
  • Oracle Linux
  • RESF Rocky Linux
  • IBM MQ
  • Debian Linux

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.7

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CNA Base Score: 5.3
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 298199
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-2100

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/06/2026 Advisory disclosed
02/06/2026 +0 days VulDB entry created
06/03/2026 +117 days VulDB entry last update

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2026-2100 (🔒)
GCVE (CVE): GCVE-0-2026-2100
GCVE (VulDB): GCVE-100-344680
EUVD: 🔒
CERT Bund: WID-SEC-2026-1267 - Red Hat Hardened Images RPMs: Mehrere Schwachstellen

Entryinfo

Created: 02/06/2026 15:14
Updated: 06/03/2026 08:56
Changes: 02/06/2026 15:14 (49), 02/06/2026 19:52 (2), 04/25/2026 11:45 (1), 05/19/2026 12:32 (22), 06/03/2026 08:56 (7)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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