{"rewrite":{"id":"r_1c6161cb85cc3c7eba874b44","clusterId":"c_0eacb38fbb192e89e8343285","slug":"valve-ships-steamos-3-9-5-with-emudhra-certificate-revoked","model":"deepseek-v4-1-flash","headline":"Valve Ships SteamOS 3.9.5 With eMudhra Certificate Revoked","summary":"Valve released SteamOS 3.9.5, the latest stable build for Steam Deck and other devices. The update revokes a compromised eMudhra CA certificate, moves desktop mode from KDE Plasma 6.4.3 to Plasma 6.7.3, and improves idle power draw on Steam Deck when audio is not playing. It also fixes bugs affecting Steam Machine performance. eMudhra, whose eight intermediate certificate private keys were compromised, has withdrawn from the global SSL/TLS certificate business as of October 22, 2026.","whyItMatters":"The certificate revocation puts SteamOS on the same side as browsers that blocked eMudhra after the key compromise, and the timing gives Valve a security fix plus a power fix in the stable channel just before 4.0.","webCardHtml":"\u003cp\u003eThe revocation sits in the patch notes as a security and stability item. eMudhra, an India-based certificate authority, had the private keys of eight intermediate certificates compromised, a state in which malicious parties could more easily impersonate secure sites. The company has announced its withdrawal from the global SSL/TLS certificate business as of October 22, 2026.\u003c/p\u003e\u003cp\u003eThe same build moves desktop mode from KDE Plasma 6.4.3 to Plasma 6.7.3, cuts idle power consumption on Steam Deck when audio is not playing, and fixes bugs that affected Steam Machine performance. Valve shipped it as version 3.9.5, the latest stable release in the SteamOS 3 line.\u003c/p\u003e","blueskyPost":"SteamOS 3.9.5 revokes the eMudhra certificate because eight intermediate CA keys were compromised, so eMudhra has left the SSL/TLS business. Deck owners get the fix, but any device still trusting that chain elsewhere does not.","twitterPost":"Eight compromised intermediate keys pushed eMudhra out of the SSL/TLS business. SteamOS 3.9.5 revokes the cert on Deck, but other devices still trusting that chain won't.","threadsPost":"The eMudhra withdrawal traces to eight compromised intermediate certificate keys, not one leaked cert. SteamOS 3.9.5 revokes the chain on Steam Deck, but any device outside Valve's update path still trusts it until someone patches that separately.","newsletterBlurb":"SteamOS 3.9.5 revokes a compromised eMudhra CA certificate as part of a security and stability update, and eMudhra has announced it is leaving the global SSL/TLS certificate business as of October 22. The same build moves desktop mode to KDE Plasma 6.7.3, improves Steam Deck idle power consumption when audio is not playing, and fixes bugs affecting Steam Machine performance.","attributionJson":"[{\"source\":\"Game Spark\",\"url\":\"http://www.gamespark.jp/article/2026/10/26/174106.html\",\"title\":\"Steam Deck addresses vulnerable digital certificate (eMudhra) issue with latest OS v3.9; idle power consumption also improved\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":4737,"outputTokens":688,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1793027512,"createdAt":"2026-10-26T15:06:04.000Z","publishedAt":"2026-10-26T15:10:49.000Z","updatedAt":"2026-10-26T15:10:49.000Z"},"cluster":{"id":"c_0eacb38fbb192e89e8343285","canonicalTitle":"Steam Deck、脆弱なデジタル証明書（eMudhra）問題に最新OS v3.9で対応。アイドル時消費電力の改善も","representativeArticleId":"a_1d0baa196cc938a4dbff9733","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"Steam Deck\"],\"studios\":[],\"people\":[],\"type\":\"news\",\"domain\":\"games\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-10-26T14:27:32.000Z","lastSeenAt":"2026-10-26T14:27:32.000Z","updatedAt":"2026-10-26T15:10:49.000Z"},"attribution":[{"source":"Game Spark","url":"http://www.gamespark.jp/article/2026/10/26/174106.html","title":"Steam Deck、脆弱なデジタル証明書（eMudhra）問題に最新OS v3.9で対応。アイドル時消費電力の改善も"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["Steam Deck"],"studios":[],"people":[],"type":"news","domain":"games","is_roundup":false},"keyFacts":null,"pageLinks":{"healthSlugs":["steam-deck"],"storySlugs":[],"entities":[{"slug":"steam-deck","supported":1,"disputed":0,"contradicted":0,"unverified":10,"overall":"green","story_count":6,"has_dossier":true}],"stories":[],"entitiesOk":true,"storiesOk":true}}