{"cve":{"cve_id":"CVE-2026-53130","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\nfs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START\n\nomfs_fill_super() rejects oversized s_sys_blocksize values (> PAGE_SIZE),\nbut it does not reject values smaller than OMFS_DIR_START (0x1b8 = 440).\n\nLater, omfs_make_empty() uses\n\n    sbi->s_sys_blocksize - OMFS_DIR_START\n\nas the length argument to memset().  Since s_sys_blocksize is u32,\na crafted filesystem image with s_sys_blocksize < OMFS_DIR_START causes\nan unsigned underflow there, wrapping to a value near 2^32.  That drives\na ~4 GiB memset() from bh->b_data + OMFS_DIR_START and overwrites kernel\nmemory far beyond the backing block buffer.\n\nAdd the corresponding lower-bound check alongside the existing upper-bound\ncheck in omfs_fill_super(), so that malformed images are rejected during\nsuperblock validation before any filesystem data is processed.","published_at":"2026-06-24T16:30:57.227000Z","last_modified_at":null,"cvss_v3_score":7.8,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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/fbc72f5c645155dc2ed3573243ed20f9913e3a54","https://git.kernel.org/stable/c/5822a05a841a10794ad818620dd2af490b0705d3","https://git.kernel.org/stable/c/754ff1bea3819a90c6f33cccfc1a299ef7609f07","https://git.kernel.org/stable/c/131ea3e57fc22936ed0e2c8330f2e36106172f51","https://git.kernel.org/stable/c/79f84af38c9fef9deb0e02c79eb969b5541c2644","https://git.kernel.org/stable/c/6561afc38398e3518a29c5eebb975c30468f98a6","https://git.kernel.org/stable/c/817f16ed62bc58a168417bfb5e859c2a370bab03","https://git.kernel.org/stable/c/0621c385fda1376e967f37ccd534c26c3e511d14"],"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":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"R","value_label":"Required"},{"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":"a3ab7155ea21aadc8a4d5687e91b3d876973185e","version_start_inclusive":true,"version_end":"fbc72f5c645155dc2ed3573243ed20f9913e3a54","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:a3ab7155ea21aadc8a4d5687e91b3d876973185e:fbc72f5c645155dc2ed3573243ed20f9913e3a54"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"a3ab7155ea21aadc8a4d5687e91b3d876973185e","version_start_inclusive":true,"version_end":"5822a05a841a10794ad818620dd2af490b0705d3","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:a3ab7155ea21aadc8a4d5687e91b3d876973185e:5822a05a841a10794ad818620dd2af490b0705d3"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"a3ab7155ea21aadc8a4d5687e91b3d876973185e","version_start_inclusive":true,"version_end":"754ff1bea3819a90c6f33cccfc1a299ef7609f07","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:a3ab7155ea21aadc8a4d5687e91b3d876973185e:754ff1bea3819a90c6f33cccfc1a299ef7609f07"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"a3ab7155ea21aadc8a4d5687e91b3d876973185e","version_start_inclusive":true,"version_end":"131ea3e57fc22936ed0e2c8330f2e36106172f51","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:a3ab7155ea21aadc8a4d5687e91b3d876973185e:131ea3e57fc22936ed0e2c8330f2e36106172f51"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"a3ab7155ea21aadc8a4d5687e91b3d876973185e","version_start_inclusive":true,"version_end":"79f84af38c9fef9deb0e02c79eb969b5541c2644","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:a3ab7155ea21aadc8a4d5687e91b3d876973185e:79f84af38c9fef9deb0e02c79eb969b5541c2644"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"a3ab7155ea21aadc8a4d5687e91b3d876973185e","version_start_inclusive":true,"version_end":"6561afc38398e3518a29c5eebb975c30468f98a6","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:a3ab7155ea21aadc8a4d5687e91b3d876973185e:6561afc38398e3518a29c5eebb975c30468f98a6"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"a3ab7155ea21aadc8a4d5687e91b3d876973185e","version_start_inclusive":true,"version_end":"817f16ed62bc58a168417bfb5e859c2a370bab03","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:a3ab7155ea21aadc8a4d5687e91b3d876973185e:817f16ed62bc58a168417bfb5e859c2a370bab03"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"a3ab7155ea21aadc8a4d5687e91b3d876973185e","version_start_inclusive":true,"version_end":"0621c385fda1376e967f37ccd534c26c3e511d14","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:a3ab7155ea21aadc8a4d5687e91b3d876973185e:0621c385fda1376e967f37ccd534c26c3e511d14"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2.6.27","version_start_inclusive":true,"version_end":"2.6.27","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:2.6.27:2.6.27"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"2.6.27","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:2.6.27"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.10.258","version_start_inclusive":true,"version_end":"5.10.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.10.258:5.10.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.15.209","version_start_inclusive":true,"version_end":"5.15.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.15.209:5.15.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.1.175","version_start_inclusive":true,"version_end":"6.1.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.1.175:6.1.*"},{"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/fbc72f5c645155dc2ed3573243ed20f9913e3a54","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/5822a05a841a10794ad818620dd2af490b0705d3","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/754ff1bea3819a90c6f33cccfc1a299ef7609f07","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/131ea3e57fc22936ed0e2c8330f2e36106172f51","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/79f84af38c9fef9deb0e02c79eb969b5541c2644","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/6561afc38398e3518a29c5eebb975c30468f98a6","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/817f16ed62bc58a168417bfb5e859c2a370bab03","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/0621c385fda1376e967f37ccd534c26c3e511d14","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-24T16:30:57.227000Z","label":"CVE published","source":null}]}