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01 Record

CVE-2026-2100

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

MediumPUBLISHEDCNA: redhat
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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02 Description

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

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
1.31% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 70.4% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-10-29.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-03-26 20:01Z7 MO AGO
Last updated
2026-10-14 19:24Z15 DAYS AGO
Reserved
2026-02-06
Assigning CNA
redhat
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
  • CWE-824Access of Uninitialized PointerBase
Data version
5.2
Document digest
e365bcbb9f7371f080b3c419813287eee4b5cf81e13eab3587cf716e2dbd45e0

05 Affected products

VendorProductVersionsPlatforms
p11-gluep11-kit0 to < 0.26.2—
Red HatRed Hat Enterprise Linux 10Not specified—
Red HatRed Hat Enterprise Linux 9Not specified—
Red HatCert Manager support for Red Hat OpenShift release 1.17Not specified—
Red HatCert Manager support for Red Hat OpenShift release 1.18Not specified—
Red HatCert Manager support for Red Hat OpenShift release 1.20Not specified—
Red HatCost Management 4Not specified—
Red HatRed Hat Hardened ImagesNot specified—
Red HatRed Hat Insights proxy 1.5Not specified—
Red HatRed Hat Update Infrastructure 5Not specified—
Red HatRed Hat Enterprise Linux 6Not specified—
Red HatRed Hat Enterprise Linux 7Not specified—
Red HatRed Hat Enterprise Linux 8Not specified—
Red HatRed Hat OpenShift Container Platform 4Not specified—

06 References

07 Fixed in

AlmaLinux 9

  • p11-kit
    Fixed in 0.26.2-1.el9
  • p11-kit-client
    Fixed in 0.26.2-1.el9
  • p11-kit-devel
    Fixed in 0.26.2-1.el9
  • p11-kit-server
    Fixed in 0.26.2-1.el9
  • p11-kit-trust
    Fixed in 0.26.2-1.el9

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 10

  • p11-kit
    Fixed in 0.26.2-1.el10
  • p11-kit-client
    Fixed in 0.26.2-1.el10
  • p11-kit-devel
    Fixed in 0.26.2-1.el10
  • p11-kit-server
    Fixed in 0.26.2-1.el10
  • p11-kit-trust
    Fixed in 0.26.2-1.el10

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • p11-kit
    Fixed in 0.26.2-1.el9
  • p11-kit-client
    Fixed in 0.26.2-1.el9
  • p11-kit-devel
    Fixed in 0.26.2-1.el9
  • p11-kit-server
    Fixed in 0.26.2-1.el9
  • p11-kit-trust
    Fixed in 0.26.2-1.el9

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 10

  • p11-kit
    Fixed in 0.26.2-1.el10
  • p11-kit-client
    Fixed in 0.26.2-1.el10
  • p11-kit-devel
    Fixed in 0.26.2-1.el10
  • p11-kit-server
    Fixed in 0.26.2-1.el10
  • p11-kit-trust
    Fixed in 0.26.2-1.el10

Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • p11-kit
    Fixed in 0.26.2-2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.