{"id":"CLSA-2026-1780389355","summary":"gnutls: Fix of 7 CVEs","details":"- CVE-2026-33846: fix heap buffer overflow in DTLS handshake fragment\n  reassembly by validating message-length consistency and bounding the\n  fragment write against the destination buffer capacity\n- CVE-2026-42009: fix undefined behaviour in DTLS packet ordering by making\n  the handshake_compare qsort comparator return 0 for equal sequence numbers\n- CVE-2026-42011: fix name constraints bypass by no longer short-circuiting\n  the intersection of an empty permitted set, so later permitted constraints\n  are still enforced\n- CVE-2026-42012: fix certificate verification bypass by making URI and SRV\n  subjectAltName entries preclude the legacy CN fallback hostname check\n- CVE-2026-42013: fix certificate verification bypass by preventing CN and\n  DN-email fallback when a subjectAltName entry is oversized\n- CVE-2026-5260: fix heap overread in RSA key exchange by rejecting a\n  ciphertext whose size does not match the RSA modulus\n- CVE-2026-42014: fix use-after-free and leak in gnutls_pkcs11_token_set_pin\n  when changing the security officer PIN","modified":"2026-10-26T09:43:49.197924600Z","published":"2026-06-02T08:36:15Z","upstream":["CVE-2026-33846","CVE-2026-42009","CVE-2026-42011","CVE-2026-42012","CVE-2026-42013","CVE-2026-42014","CVE-2026-5260"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/centos-stream8els/CLSA-2026-1780389355.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33846"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42009"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42011"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42012"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42013"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42014"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5260"}],"affected":[{"package":{"name":"gnutls","ecosystem":"TuxCare:CentOS-Stream:8","purl":"pkg:rpm/tuxcare/gnutls?distro=centos-stream-8"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.16-8.el8.1.tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1780389355.json"}},{"package":{"name":"gnutls-c++","ecosystem":"TuxCare:CentOS-Stream:8","purl":"pkg:rpm/tuxcare/gnutls-c++?distro=centos-stream-8"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.16-8.el8.1.tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1780389355.json"}},{"package":{"name":"gnutls-dane","ecosystem":"TuxCare:CentOS-Stream:8","purl":"pkg:rpm/tuxcare/gnutls-dane?distro=centos-stream-8"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.16-8.el8.1.tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1780389355.json"}},{"package":{"name":"gnutls-devel","ecosystem":"TuxCare:CentOS-Stream:8","purl":"pkg:rpm/tuxcare/gnutls-devel?distro=centos-stream-8"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.16-8.el8.1.tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1780389355.json"}},{"package":{"name":"gnutls-utils","ecosystem":"TuxCare:CentOS-Stream:8","purl":"pkg:rpm/tuxcare/gnutls-utils?distro=centos-stream-8"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.16-8.el8.1.tuxcare.els8"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1780389355.json"}}],"schema_version":"1.9.0"}