{"cve":{"cve_id":"CVE-2026-52936","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":null,"epss_percentile":null,"epss_as_of":null,"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: jitterentropy - replace long-held spinlock with mutex\n\njent_kcapi_random() serializes the shared jitterentropy state, but it\ncurrently holds a spinlock across the jent_read_entropy() call. That\npath performs expensive jitter collection and SHA3 conditioning, so\nparallel readers can trigger stalls as contending waiters spin for\nthe same lock.\n\nTo prevent non-preemptible lock hold, replace rng->jent_lock with a\nmutex so contended readers sleep instead of spinning on a shared lock\nheld across expensive entropy generation.","published_at":"2026-06-24T07:14:26.649000Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":null,"nvd_references":["https://git.kernel.org/stable/c/18216b8ab6904753eaf31baf453cb02ecd202ba4","https://git.kernel.org/stable/c/4c03e6eb98443dc4d6d422a9780034a5b75376b4","https://git.kernel.org/stable/c/ff734dbd9e2432601a6dcd167cfb0bf8a36d1880","https://git.kernel.org/stable/c/ec427dc5286da1ed08f2d510e2147a7581b0cb02","https://git.kernel.org/stable/c/01d798e9feb30212952d4e992801ba6bd6a82351"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-28T17:55:22.518073Z","updated_at":"2026-06-28T23:30:49.890169Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"bb5530e4082446aac3a3d69780cd4dbfa4520013","version_start_inclusive":true,"version_end":"18216b8ab6904753eaf31baf453cb02ecd202ba4","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:bb5530e4082446aac3a3d69780cd4dbfa4520013:18216b8ab6904753eaf31baf453cb02ecd202ba4"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"bb5530e4082446aac3a3d69780cd4dbfa4520013","version_start_inclusive":true,"version_end":"4c03e6eb98443dc4d6d422a9780034a5b75376b4","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:bb5530e4082446aac3a3d69780cd4dbfa4520013:4c03e6eb98443dc4d6d422a9780034a5b75376b4"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"bb5530e4082446aac3a3d69780cd4dbfa4520013","version_start_inclusive":true,"version_end":"ff734dbd9e2432601a6dcd167cfb0bf8a36d1880","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:bb5530e4082446aac3a3d69780cd4dbfa4520013:ff734dbd9e2432601a6dcd167cfb0bf8a36d1880"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"bb5530e4082446aac3a3d69780cd4dbfa4520013","version_start_inclusive":true,"version_end":"ec427dc5286da1ed08f2d510e2147a7581b0cb02","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:bb5530e4082446aac3a3d69780cd4dbfa4520013:ec427dc5286da1ed08f2d510e2147a7581b0cb02"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"bb5530e4082446aac3a3d69780cd4dbfa4520013","version_start_inclusive":true,"version_end":"01d798e9feb30212952d4e992801ba6bd6a82351","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:bb5530e4082446aac3a3d69780cd4dbfa4520013:01d798e9feb30212952d4e992801ba6bd6a82351"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"4.2","version_start_inclusive":true,"version_end":"4.2","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:4.2:4.2"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"4.2","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:4.2"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.141","version_start_inclusive":true,"version_end":"6.6.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.6.141:6.6.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.91","version_start_inclusive":true,"version_end":"6.12.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.12.91:6.12.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.18.33","version_start_inclusive":true,"version_end":"6.18.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.18.33:6.18.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0.10","version_start_inclusive":true,"version_end":"7.0.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0.10:7.0.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.1","version_start_inclusive":true,"version_end":"*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.1:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://git.kernel.org/stable/c/18216b8ab6904753eaf31baf453cb02ecd202ba4","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/4c03e6eb98443dc4d6d422a9780034a5b75376b4","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/ff734dbd9e2432601a6dcd167cfb0bf8a36d1880","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/ec427dc5286da1ed08f2d510e2147a7581b0cb02","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/01d798e9feb30212952d4e992801ba6bd6a82351","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-24T07:14:26.649000Z","label":"CVE published","source":null}]}