{"cve":{"cve_id":"CVE-2026-53170","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\naccel/ethosu: reject DMA commands with uninitialized length\n\ncmd_state_init() initializes the command state with memset(0xff),\nleaving dma->len at U64_MAX to signal missing setup. The only setter\nis NPU_SET_DMA0_LEN; if userspace omits this command and issues\nNPU_OP_DMA_START, dma->len remains U64_MAX.\n\nIn dma_length(), a positive stride added to U64_MAX wraps to a small\nvalue. With size0 == 1, check_mul_overflow() does not trigger and\ndma_length() returns 0 instead of U64_MAX. The caller's U64_MAX check\nthen passes, region_size[] stays 0, and the bounds check in\nethosu_job.c is bypassed, allowing hardware to execute DMA with stale\nphysical addresses.\n\nFix by checking for U64_MAX at the start of dma_length() before any\narithmetic, consistent with the sentinel value used throughout the\ndriver to detect uninitialized fields.","published_at":"2026-06-25T08:38:48.728000Z","last_modified_at":null,"cvss_v3_score":8.8,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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/fb25c76a820ca8a547aa478bfb503da0a11494ab","https://git.kernel.org/stable/c/d9d021218162b6c4fe0bdf42b2b340f1aae23a12"],"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":"2026-06-28T23:30:51.545322Z"},"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":"C","value_label":"Changed"},{"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":"5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b","version_start_inclusive":true,"version_end":"fb25c76a820ca8a547aa478bfb503da0a11494ab","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b:fb25c76a820ca8a547aa478bfb503da0a11494ab"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b","version_start_inclusive":true,"version_end":"d9d021218162b6c4fe0bdf42b2b340f1aae23a12","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b:d9d021218162b6c4fe0bdf42b2b340f1aae23a12"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.19","version_start_inclusive":true,"version_end":"6.19","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.19:6.19"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"6.19","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:6.19"},{"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/fb25c76a820ca8a547aa478bfb503da0a11494ab","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/d9d021218162b6c4fe0bdf42b2b340f1aae23a12","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-25T08:38:48.728000Z","label":"CVE published","source":null}]}