Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Fixed packages 8

Vulnerabilities 6

• High 7.5
  CVE-2026-1584

  Gnutls: gnutls: remote denial of service via crafted clienthello with invalid psk binder

  A flaw was found in gnutls. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted ClientHello message with an invalid Pre-Shared Key (PSK) binder value during the TLS handshake. This can lead to a NULL pointer derefe…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Alpine
  Apr 9, 2026
• Medium 6.5
  CVE-2025-32988

  Gnutls: vulnerability in gnutls othername san export

  A flaw was found in GnuTLS. A double-free vulnerability exists in GnuTLS due to incorrect ownership handling in the export logic of Subject Alternative Name (SAN) entries containing an otherName. If the type-id OID is invalid or malformed, GnuTLS will call as…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux Alpine
  Jul 10, 2025
• Medium 6.5
  CVE-2025-32990

  Gnutls: vulnerability in gnutls certtool template parsing

  A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic within the certtool utility. When it reads certain settings from a template file, it allows an attacker to cause an out-of-bounds (OOB) NULL pointer write,…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux Alpine
  Jul 10, 2025
• Medium 5.3
  CVE-2025-14831

  Gnutls: gnutls: denial of service via excessive resource consumption during certificate verification

  A flaw was found in GnuTLS. This vulnerability allows a denial of service (DoS) by excessive CPU (Central Processing Unit) and memory consumption via specially crafted malicious certificates containing a large number of name constraints and subject alternativ…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Alpine
  Feb 9, 2026
• Medium 5.3
  CVE-2025-32989

  Gnutls: vulnerability in gnutls sct extension parsing

  A heap-buffer-overread vulnerability was found in GnuTLS in how it handles the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. This flaw allows a malicious user to create a certificate containing a …

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux Alpine
  Jul 10, 2025
• Medium 4.0
  CVE-2025-9820

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

  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. Thi…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux Alpine
  Jan 26, 2026

References

• article
  https://images.redhat.com/
• report
  https://access.redhat.com/security/cve/CVE-2025-32990
• article
  https://access.redhat.com/security/updates/classification/
• report
  https://access.redhat.com/security/cve/CVE-2025-32989
• report
  https://access.redhat.com/security/cve/CVE-2025-32988
• report
  https://access.redhat.com/security/cve/CVE-2025-9820
• report
  https://access.redhat.com/security/cve/CVE-2025-14831
• report
  https://access.redhat.com/security/cve/CVE-2026-1584
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7477.json
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2392528
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-9820
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-9820
• article
  https://gitlab.com/gnutls/gnutls/-/commit/1d56f96f6ab5034d677136b9d50b5a75dff0faf5
• article
  https://gitlab.com/gnutls/gnutls/-/issues/1732
• article
  https://www.gnutls.org/security-new.html#GNUTLS-SA-2025-11-18
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2423177
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-14831
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-14831
• article
  https://gitlab.com/gnutls/gnutls/-/issues/1773
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2359622
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-32988
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-32988
• article
  https://lists.gnupg.org/pipermail/gnutls-help/2025-July/004883.html
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2359621
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-32989
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-32989
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2359620
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-32990
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-32990
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2435258
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-1584
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-1584