Description
A 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.
CVSS breakdown
CVSS 3.1
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
High
References
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:20611
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:20612
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:20613
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:26319
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:26409
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:29197
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:30004
- VENDOR_ADVISORYhttps://access.redhat.com/security/cve/CVE-2026-42014
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=2467451
- MISChttps://gitlab.com/gnutls/gnutls/-/issues/1766
- MISChttps://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-9