Use-After-Free Vulnerability in GnuTLS's Security Officer PIN Functionality
CVE-2026-42014

6.6MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Red Hat Enterprise Linux 6
Vendor
CVE Published:
16 June 2026

What is CVE-2026-42014?

A use-after-free vulnerability exists in GnuTLS within the gnutls_pkcs11_token_set_pin function. This flaw arises when an attacker attempts to set a new PIN with a NULL old PIN, specifically on a token that does not have a protected authentication path. Such exploitation can compromise the security of sensitive operations, allowing unauthorized access or manipulation of the token.

Affected Version(s)

Red Hat Enterprise Linux 10 0:3.8.10-4.el10_2

Red Hat Enterprise Linux 8 0:3.6.16-8.el8_10.6

Red Hat Enterprise Linux 8 0:3.6.16-8.el8_10.6

References

https://access.redhat.com/errata/RHSA-2026:20611
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20612
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20613
vendor-advisoryx_refsource_REDHAT

CVSS V3.1

Score:
6.6
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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