Riskcovery

CVE-2025-9820

Gnutls: stack-based buffer overflow in gnutls_pkcs11_token_init() function

State
Published
Severity
4.0 Medium
Published
Jan 26, 2026
Updated
Oct 14, 2026
Reserved
Sep 2, 2025

Read the record on cve.org

Description

A flaw was found in the GnuTLS library, specifically in the gnutls_pkcs11_token_init() function that handles PKCS#11 token initialization. When a token label longer than expected is processed, the function writes past the end of a fixed-size stack buffer. This programming error can cause the application using GnuTLS to crash or, in certain conditions, be exploited for code execution. As a result, systems or applications relying on GnuTLS may be vulnerable to a denial of service or local privilege escalation attacks.

Scores

CVSSScoreVectorSource
3.14.0 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lredhat

Weaknesses

  • CWE-121 Stack-based Buffer Overflow

Affected Products

ProductVersions
gnutls
  • 3.8.1Affected
  • 3.8.2Affected
  • 3.8.3Affected
  • 3.8.4Affected
  • 3.8.5Affected
  • 3.8.6Affected
  • 3.8.7Affected
  • 3.8.8Affected
  • 3.8.9Affected
  • 3.8.10Affected
Red Hat Enterprise Linux 10Red Hat
  • 0:3.8.10-3.el10_1 and laterNot affected
Red Hat Enterprise Linux 8Red Hat
  • 0:3.6.16-8.el8_10.5 and laterNot affected
Red Hat Enterprise Linux 8Red Hat
  • 0:3.6.16-8.el8_10.5 and laterNot affected
Red Hat Enterprise Linux 9Red Hat
  • 0:3.8.3-10.el9_7 and laterNot affected
Red Hat Enterprise Linux 9Red Hat
  • 0:3.8.3-10.el9_7 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat
  • 7.13.5-4.1777325677 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat
  • 7.13.5-4.1777325711 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat
  • 7.13.5-4.1777325710 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat
  • 7.13.5-3.1777325680 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat
  • 7.13.5-4.1777325709 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat
  • 7.13.5-4.1777325680 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat
  • 7.13.5-4.1777325708 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.18Red Hat
  • 1791459707 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.18Red Hat
  • 1791459711 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.18Red Hat
  • 1791459759 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.18Red Hat
  • 1789029076 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.18Red Hat
  • 1791966259 and laterNot affected
Red Hat Ceph Storage 8Red Hat
  • 1774002867 and laterNot affected
Red Hat Discovery 2Red Hat
  • 1775668717 and laterNot affected
Red Hat Discovery 2Red Hat
  • 1775675922 and laterNot affected
Red Hat Hardened ImagesRed Hat
  • 3.8.12-1.1.hum1 and laterNot affected
Red Hat Insights proxy 1.5Red Hat
  • 1773685509 and laterNot affected
Red Hat Update Infrastructure 5Red Hat
  • 1773670073 and laterNot affected
Red Hat Update Infrastructure 5Red Hat
  • 1773672059 and laterNot affected
Red Hat Update Infrastructure 5Red Hat
  • 1773668803 and laterNot affected
Red Hat Update Infrastructure 5Red Hat
  • 1773670137 and laterNot affected
Red Hat Enterprise Linux 6Red Hat
    Red Hat Enterprise Linux 7Red Hat
      Red Hat OpenShift Container Platform 4Red Hat
        Red Hat OpenShift Container Platform 4Red Hat

          References

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