{"cve":{"cve_id":"CVE-2026-53162","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\nmemcg: use round-robin victim selection in refill_stock\n\nHarry Yoo reported that get_random_u32_below() is not safe to call in the\nnmi context and memcg charge draining can happen in nmi context.\n\nMore specifically get_random_u32_below() is neither reentrant- nor\nNMI-safe: it acquires a per-cpu local_lock via local_lock_irqsave() on the\nbatched_entropy_u32 state.  An NMI that lands on a CPU mid-update of the\nChaCha batch state and recurses into the random subsystem would corrupt\nthat state.  The memcg_stock local_trylock prevents re-entry on the percpu\nstock itself, but cannot protect an unrelated subsystem's per-cpu lock.\n\nReplace the random pick with a per-cpu round-robin counter stored in\nmemcg_stock_pcp and serialized by the same local_trylock that already\nguards cached[] and nr_pages[].  No atomics, no random calls, no extra\nlocks needed.","published_at":"2026-06-25T08:38:43.453000Z","last_modified_at":null,"cvss_v3_score":7.8,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"HIGH","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/89bd8215e25aa6999cc51696da418e0d422bc5e0","https://git.kernel.org/stable/c/00731bd7e18f182a32ca54d6b176eaa470b51ed7","https://git.kernel.org/stable/c/c0cafe24d3f6534294c4b2bc2d47734ff7cbd313"],"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":"2026-06-28T17:55:28.590503Z","updated_at":"2026-06-28T23:30:50.753831Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"L","value_label":"Local"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f735eebe55f8f61758fe014bd0b02ab50b059e4d","version_start_inclusive":true,"version_end":"89bd8215e25aa6999cc51696da418e0d422bc5e0","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f735eebe55f8f61758fe014bd0b02ab50b059e4d:89bd8215e25aa6999cc51696da418e0d422bc5e0"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f735eebe55f8f61758fe014bd0b02ab50b059e4d","version_start_inclusive":true,"version_end":"00731bd7e18f182a32ca54d6b176eaa470b51ed7","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f735eebe55f8f61758fe014bd0b02ab50b059e4d:00731bd7e18f182a32ca54d6b176eaa470b51ed7"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f735eebe55f8f61758fe014bd0b02ab50b059e4d","version_start_inclusive":true,"version_end":"c0cafe24d3f6534294c4b2bc2d47734ff7cbd313","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f735eebe55f8f61758fe014bd0b02ab50b059e4d:c0cafe24d3f6534294c4b2bc2d47734ff7cbd313"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.16","version_start_inclusive":true,"version_end":"6.16","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.16:6.16"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"6.16","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:6.16"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.18.36","version_start_inclusive":true,"version_end":"6.18.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.18.36:6.18.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0.13","version_start_inclusive":true,"version_end":"7.0.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0.13:7.0.*"},{"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/89bd8215e25aa6999cc51696da418e0d422bc5e0","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/00731bd7e18f182a32ca54d6b176eaa470b51ed7","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/c0cafe24d3f6534294c4b2bc2d47734ff7cbd313","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-25T08:38:43.453000Z","label":"CVE published","source":null}]}