{"cve":{"cve_id":"CVE-2026-53078","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\nbpf: Fix same-register dst/src OOB read and pointer leak in sock_ops\n\nWhen a BPF sock_ops program accesses ctx fields with dst_reg == src_reg,\nthe SOCK_OPS_GET_SK() and SOCK_OPS_GET_FIELD() macros fail to zero the\ndestination register in the !fullsock / !locked_tcp_sock path.\n\nBoth macros borrow a temporary register to check is_fullsock /\nis_locked_tcp_sock when dst_reg == src_reg, because dst_reg holds the\nctx pointer. When the check is false (e.g., TCP_NEW_SYN_RECV state with\na request_sock), dst_reg should be zeroed but is not, leaving the stale\nctx pointer:\n\n - SOCK_OPS_GET_SK: dst_reg retains the ctx pointer, passes NULL checks\n   as PTR_TO_SOCKET_OR_NULL, and can be used as a bogus socket pointer,\n   leading to stack-out-of-bounds access in helpers like\n   bpf_skc_to_tcp6_sock().\n\n - SOCK_OPS_GET_FIELD: dst_reg retains the ctx pointer which the\n   verifier believes is a SCALAR_VALUE, leaking a kernel pointer.\n\nFix both macros by:\n - Changing JMP_A(1) to JMP_A(2) in the fullsock path to skip the\n   added instruction.\n - Adding BPF_MOV64_IMM(si->dst_reg, 0) after the temp register\n   restore in the !fullsock path, placed after the restore because\n   dst_reg == src_reg means we need src_reg intact to read ctx->temp.","published_at":"2026-06-24T16:30:18.858000Z","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/18e3ffde1822f0b48b1753bf34aa97ce839df1d8","https://git.kernel.org/stable/c/10f86a2a5c91fc4c4d001960f1c21abe52545ef6"],"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":"fd09af010788a884de1c39537c288830c3d305db","version_start_inclusive":true,"version_end":"18e3ffde1822f0b48b1753bf34aa97ce839df1d8","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:fd09af010788a884de1c39537c288830c3d305db:18e3ffde1822f0b48b1753bf34aa97ce839df1d8"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"fd09af010788a884de1c39537c288830c3d305db","version_start_inclusive":true,"version_end":"10f86a2a5c91fc4c4d001960f1c21abe52545ef6","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:fd09af010788a884de1c39537c288830c3d305db:10f86a2a5c91fc4c4d001960f1c21abe52545ef6"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"48be3df15aa19c04eadf156c9129293c9a10389f","version_start_inclusive":true,"version_end":"48be3df15aa19c04eadf156c9129293c9a10389f","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:48be3df15aa19c04eadf156c9129293c9a10389f:48be3df15aa19c04eadf156c9129293c9a10389f"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"cd4644d904e1d153d516e73e2e127e7a2fe687e1","version_start_inclusive":true,"version_end":"cd4644d904e1d153d516e73e2e127e7a2fe687e1","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:cd4644d904e1d153d516e73e2e127e7a2fe687e1:cd4644d904e1d153d516e73e2e127e7a2fe687e1"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6e0bc946cbeec538322820786b5fb5200a2216ab","version_start_inclusive":true,"version_end":"6e0bc946cbeec538322820786b5fb5200a2216ab","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6e0bc946cbeec538322820786b5fb5200a2216ab:6e0bc946cbeec538322820786b5fb5200a2216ab"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"a7e52f7f675046d9ffc5692d815fa67c82fcdbf5","version_start_inclusive":true,"version_end":"a7e52f7f675046d9ffc5692d815fa67c82fcdbf5","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:a7e52f7f675046d9ffc5692d815fa67c82fcdbf5:a7e52f7f675046d9ffc5692d815fa67c82fcdbf5"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"db7f8c57dbdd31f7e59f8dc8d1e1b38607a320ef","version_start_inclusive":true,"version_end":"db7f8c57dbdd31f7e59f8dc8d1e1b38607a320ef","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:db7f8c57dbdd31f7e59f8dc8d1e1b38607a320ef:db7f8c57dbdd31f7e59f8dc8d1e1b38607a320ef"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.7.18","version_start_inclusive":true,"version_end":"5.8","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5.7.18:5.8"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.8.4","version_start_inclusive":true,"version_end":"5.9","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5.8.4:5.9"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.4.61","version_start_inclusive":true,"version_end":"5.5","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5.4.61:5.5"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.9","version_start_inclusive":true,"version_end":"5.9","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.9:5.9"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"5.9","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:5.9"},{"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/18e3ffde1822f0b48b1753bf34aa97ce839df1d8","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/10f86a2a5c91fc4c4d001960f1c21abe52545ef6","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-24T16:30:18.858000Z","label":"CVE published","source":null}]}