Gnutls: fix use-after-free in gnutls_pkcs11_token_set_pin

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Summary

CVECVE-2026-42014
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-16 02:16:19 UTC
Updated2026-06-16 15:26:04 UTC
DescriptionA flaw was found in GnuTLS. The `gnutls_pkcs11_token_set_pin` function, used for changing the Security Officer PIN, can lead to a use-after-free vulnerability. This occurs when an attacker attempts to change the PIN with a NULL old PIN for a token that lacks a protected authentication path.

Risk And Classification

Primary CVSS: v3.1 6.6 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

EPSS: 0.001960000 probability, percentile 0.093680000 (date 2026-06-21)

Problem Types: CWE-825 | CWE-825 Expired Pointer Dereference

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.6MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
3.1CNACVSS6.6MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Enterprise Linux 10 unaffected 0:3.8.10-4.el10_2 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:3.6.16-8.el8_10.6 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:3.6.16-8.el8_10.6 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:3.8.10-4.el9_8 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:3.8.10-4.el9_8 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 6 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat Hardened Images Not specified Not specified
CNA Red Hat Red Hat OpenShift Container Platform 4 Not specified Not specified

References

ReferenceSourceLinkTags
gitlab.com/gnutls/gnutls/-/issues/1766 [email protected] gitlab.com
access.redhat.com/errata/RHSA-2026:20612 [email protected] access.redhat.com
www.gnutls.org/security-new.html [email protected] www.gnutls.org
access.redhat.com/errata/RHSA-2026:20613 [email protected] access.redhat.com
bugzilla.redhat.com/show_bug.cgi [email protected] bugzilla.redhat.com
access.redhat.com/security/cve/CVE-2026-42014 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2026:20611 [email protected] access.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Red Hat would like to thank Joshua Rogers (AISLE Research Team) and Luigino Camastra for reporting this issue. (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-05-06T19:51:54.069ZReported to Red Hat.
CNA2026-04-29T00:00:00.000ZMade public.
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