{"cve":{"cve_id":"CVE-2026-53247","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\nnet: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown\n\nmtk_free_dev() calls metadata_dst_free() which frees the metadata_dst\nwith kfree() immediately, bypassing the RCU grace period.\nIn the RX path, skb_dst_set_noref() sets a non-refcounted pointer from\nthe skb to the metadata_dst. This function requires RCU read-side\nprotection and the dst must remain valid until all RCU readers complete.\nSince metadata_dst_free() calls kfree() directly, a use-after-free can\noccur if any skb still holds a noref pointer to the dst when the driver\ntears it down.\nReplace metadata_dst_free() with dst_release() which properly goes\nthrough the refcount path: when the refcount drops to zero, it schedules\nthe actual free via call_rcu_hurry(), ensuring all RCU readers have\ncompleted before the memory is freed.","published_at":"2026-06-25T08:39:40.654000Z","last_modified_at":null,"cvss_v3_score":9.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","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/72775977e89c25c99ee84d2c5baa3f86a8ba5cb4","https://git.kernel.org/stable/c/459c6f35c58cf0fd5247e55d73ddaa29571d9b7e","https://git.kernel.org/stable/c/e634408d2b0cd939cfe019398a21fb47b7a8ffe3","https://git.kernel.org/stable/c/2d86aeb46d5f69c704065a8c69822582787272a1","https://git.kernel.org/stable/c/80df409e1a483676826a6c66e693dba6ac507751"],"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":"CRITICAL","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"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":"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":"2d7605a729062bb554f03c5983d8cfb8c0b42e9c","version_start_inclusive":true,"version_end":"72775977e89c25c99ee84d2c5baa3f86a8ba5cb4","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2d7605a729062bb554f03c5983d8cfb8c0b42e9c:72775977e89c25c99ee84d2c5baa3f86a8ba5cb4"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2d7605a729062bb554f03c5983d8cfb8c0b42e9c","version_start_inclusive":true,"version_end":"459c6f35c58cf0fd5247e55d73ddaa29571d9b7e","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2d7605a729062bb554f03c5983d8cfb8c0b42e9c:459c6f35c58cf0fd5247e55d73ddaa29571d9b7e"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2d7605a729062bb554f03c5983d8cfb8c0b42e9c","version_start_inclusive":true,"version_end":"e634408d2b0cd939cfe019398a21fb47b7a8ffe3","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2d7605a729062bb554f03c5983d8cfb8c0b42e9c:e634408d2b0cd939cfe019398a21fb47b7a8ffe3"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2d7605a729062bb554f03c5983d8cfb8c0b42e9c","version_start_inclusive":true,"version_end":"2d86aeb46d5f69c704065a8c69822582787272a1","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2d7605a729062bb554f03c5983d8cfb8c0b42e9c:2d86aeb46d5f69c704065a8c69822582787272a1"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2d7605a729062bb554f03c5983d8cfb8c0b42e9c","version_start_inclusive":true,"version_end":"80df409e1a483676826a6c66e693dba6ac507751","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2d7605a729062bb554f03c5983d8cfb8c0b42e9c:80df409e1a483676826a6c66e693dba6ac507751"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.2","version_start_inclusive":true,"version_end":"6.2","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.2:6.2"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"6.2","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:6.2"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.143","version_start_inclusive":true,"version_end":"6.6.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.6.143:6.6.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.94","version_start_inclusive":true,"version_end":"6.12.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.12.94:6.12.*"},{"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/72775977e89c25c99ee84d2c5baa3f86a8ba5cb4","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/459c6f35c58cf0fd5247e55d73ddaa29571d9b7e","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/e634408d2b0cd939cfe019398a21fb47b7a8ffe3","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/2d86aeb46d5f69c704065a8c69822582787272a1","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/80df409e1a483676826a6c66e693dba6ac507751","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-25T08:39:40.654000Z","label":"CVE published","source":null}]}