{"cve":{"cve_id":"CVE-2026-53319","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\nblk-wbt: remove WARN_ON_ONCE from wbt_init_enable_default()\n\nwbt_init_enable_default() uses WARN_ON_ONCE to check for failures from\nwbt_alloc() and wbt_init(). However, both are expected failure paths:\n\n- wbt_alloc() can return NULL under memory pressure (-ENOMEM)\n- wbt_init() can fail with -EBUSY if wbt is already registered\n\nsyzbot triggers this by injecting memory allocation failures during MTD\npartition creation via ioctl(BLKPG), causing a spurious warning.\n\nwbt_init_enable_default() is a best-effort initialization called from\nblk_register_queue() with a void return type. Failure simply means the\ndisk operates without writeback throttling, which is harmless.\n\nReplace WARN_ON_ONCE with plain if-checks, consistent with how\nwbt_set_lat() in the same file already handles these failures. Add a\npr_warn() for the wbt_init() failure to retain diagnostic information\nwithout triggering a full stack trace.","published_at":"2026-06-26T19:41:11.269000Z","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/fd7a982657077469802594a5165bc30b9a55af70","https://git.kernel.org/stable/c/e9b004ff83067cdf96774b45aea4b239ace99a2f"],"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":"2026-06-28T23:30:52.348775Z"},"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":"41afaeeda5099d9cd07eaa7dc6c3d20c6f1dd9e9","version_start_inclusive":true,"version_end":"fd7a982657077469802594a5165bc30b9a55af70","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:41afaeeda5099d9cd07eaa7dc6c3d20c6f1dd9e9:fd7a982657077469802594a5165bc30b9a55af70"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"41afaeeda5099d9cd07eaa7dc6c3d20c6f1dd9e9","version_start_inclusive":true,"version_end":"e9b004ff83067cdf96774b45aea4b239ace99a2f","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:41afaeeda5099d9cd07eaa7dc6c3d20c6f1dd9e9:e9b004ff83067cdf96774b45aea4b239ace99a2f"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0","version_start_inclusive":true,"version_end":"7.0","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0:7.0"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"7.0","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:7.0"},{"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/fd7a982657077469802594a5165bc30b9a55af70","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/e9b004ff83067cdf96774b45aea4b239ace99a2f","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-26T19:41:11.269000Z","label":"CVE published","source":null}]}