{"id":"SUSE-SU-2026:4797-1","summary":"Security update for bouncycastle","details":"This update for bouncycastle fixes the following issues:\n\n- CVE-2026-17507: negative signed leaf_index values from unsigned wire encodings can cause heap exhaustion\n  (bsc#1284075).\n- CVE-2026-17508: unbounded KDF iteration and memory parameters can cause resource exhaustion (bsc#1284073).\n- CVE-2026-18036: variable-time modulo and division operations in NTRU implementation can allow timing side-channel\n  attacks (bsc#1284065).\n- CVE-2026-18040: table lookups and variable-time duplicate scanning in HQC can cause cache side-channel leaks\n  (bsc#1284205).\n- CVE-2026-71885: unbound X.509 certificates in MLS LeafNode verification can cause identity impersonation and group\n  message interception (bsc#1284165).\n- CVE-2026-71886: unvalidated CERTIFY_OTHER flags in OpenPGP subkeys can cause unauthorized trust delegations and\n  identity spoofing (bsc#1284212).\n- CVE-2026-71887: missing primary key back-signature validation on subkeys can cause signature misattribution and trust\n  context spoofing (bsc#1284213).\n- CVE-2026-71888: disagreement between digestAlgorithm and authAttrs in CMS parsing can cause unauthenticated attribute\n  injection (bsc#1284215).\n- CVE-2026-71889: skipped leaf certificate evaluation in checkNameConstraints can cause X.509 name constraint bypasses\n  (bsc#1284218).\n- CVE-2026-71890: unbounded Remove proposals in external MLS commits can cause arbitrary group member eviction and\n  session takeover (bsc#1284219).\n- CVE-2026-71891: forged ECPoint curves in BLS12-381 key validation can cause aggregate signature verification bypasses\n  (bsc#1284220).\n- CVE-2026-71892: type mismatch in CMS key-transport validation can cause key-size enforcement bypasses for HKDF-derived\n  content keys (bsc#1284221).\n- CVE-2026-85515: laundered EOF exceptions in OpenPGP message stream processing can cause unregistered truncation errors\n  and integrity check bypasses (bsc#1284222).\n- CVE-2026-97873: unbounded iteration counts in legacy PBES1 and PKCS#12 PBE implementations can cause resource\n  exhaustion (bsc#1284224).\n\nChanges for bouncycastle:\n\n- Updated to version 1.86.\n","modified":"2026-10-21T20:02:15.286117133Z","published":"2026-10-21T07:54:59Z","related":["CVE-2026-17507","CVE-2026-17508","CVE-2026-18036","CVE-2026-18040","CVE-2026-71885","CVE-2026-71886","CVE-2026-71887","CVE-2026-71888","CVE-2026-71889","CVE-2026-71890","CVE-2026-71891","CVE-2026-71892","CVE-2026-85515","CVE-2026-97873"],"upstream":["CVE-2026-17507","CVE-2026-17508","CVE-2026-18036","CVE-2026-18040","CVE-2026-71885","CVE-2026-71886","CVE-2026-71887","CVE-2026-71888","CVE-2026-71889","CVE-2026-71890","CVE-2026-71891","CVE-2026-71892","CVE-2026-85515","CVE-2026-97873"],"references":[{"type":"ADVISORY","url":"https://www.suse.com/support/update/announcement/2026/suse-su-20264797-1/"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284065"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284073"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284075"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284165"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284205"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284212"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284213"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284215"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284218"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284219"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284220"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284221"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284222"},{"type":"REPORT","url":"https://bugzilla.suse.com/1284224"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-17507"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-17508"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-18036"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-18040"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-71885"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-71886"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-71887"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-71888"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-71889"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-71890"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-71891"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-71892"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-85515"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-97873"}],"affected":[{"package":{"name":"bouncycastle","ecosystem":"SUSE:Linux 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