{"schemaVersion":3,"id":"MGASA-2026-0375","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Updated mbedtls packages fix security vulnerabilities\n\nTLS 1.3 client accepts HelloRetryRequest selecting an unadvertised\ngroup. (CVE-2026-25832)\nPossible buffer overflow in mbedtls_ecdh_calc_secret(). (CVE-2026-35336)\nX.509 CA bit forgery via invalid basicConstraints extension.\n(CVE-2026-49300)\nUse-after-free in mbedtls_pkcs7_free() when reusing a PKCS7 context.\n(CVE-2026-50579)\nRemote buffer overflow in TLS 1.2 ECDHE-PSK client handshake.\n(CVE-2026-50580)\nExtended master secret calculation failure ignored. (CVE-2026-50581)\nA 1-byte buffer overread when parsing a malformed ECC public key in the\nPK module. (CVE-2026-50583)\nChaCha20 counter overflow can reuse keystream. (CVE-2026-50584)\nIncomplete context reset in mbedtls_ssl_session_reset().\n(CVE-2026-50585)\nA potential information disclosure in TLS 1.2 servers using session\ntickets. If the session ticket write callback failed without setting the\nlifetime output parameter, Mbed TLS could send 4 bytes of uninitialized\nstack memory to the peer in the NewSessionTicket message.\n(CVE-2026-50586)\nTiming side-channel in RSA PKCS#1 v1.5 decryption. (CVE-2026-50587)\nOut-of-bounds read in TLS 1.2 EC J-PAKE ServerKeyExchange parsing.\n(CVE-2026-50588)\nIgnored TLS 1.3 resumption secret derivation error. (CVE-2026-50640)\nHeap corruption with early renegotiation after corrupted record in DTLS.\n(CVE-2026-50713)\nSide channel leak in ECC optimized modp. (CVE-2026-54435)\nSignature algorithm restrictions not enforced on certificate chain.\n(CVE-2026-54441)\nA random generator fault can compromise TLS data integrity.\n(CVE-2026-73064)","dates":{"published":"2026-09-04T17:53:22.000Z","modified":"2026-09-04T18:00:03.366Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"mageia","product":"mbedtls","name":"mbedtls","label":"mbedtls","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/mbedtls","purlType":"rpm","versions":[{"text":"< 3.6.7-1.mga10","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.6.7-1.mga10","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://advisories.mageia.org/MGASA-2026-0375.html","label":"advisories.mageia.org/MGASA-2026-0375.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=35972","label":"bugs.mageia.org/show_bug.cgi?id=35972","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3BALMLPIK3FBKPIGK5RZX3VUWR2QCCGQ/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["WEB"]},{"url":"https://github.com/Mbed-TLS/mbedtls/releases#release-mbedtls-3.6.7","label":"github.com/Mbed-TLS/mbedtls/releases","hostname":"github.com","tags":["WEB"]}],"lineage":{"upstream":["CVE-2026-25832","CVE-2026-35336","CVE-2026-49300","CVE-2026-50579","CVE-2026-50580","CVE-2026-50581","CVE-2026-50583","CVE-2026-50584","CVE-2026-50585","CVE-2026-50586","CVE-2026-50587","CVE-2026-50588","CVE-2026-50640","CVE-2026-50713","CVE-2026-54435","CVE-2026-54441","CVE-2026-73064"],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-09-04T17:53:22.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-04T18:00:03.366Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T12:41:26.670Z","stale":false,"partial":false}}