{"cve":{"cve_id":"CVE-2026-53234","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: ibm: emac: Fix use-after-free during device removal\n\nThe driver was using devm_register_netdev() which causes unregister_netdev()\nto be deferred until the devres cleanup phase, which runs after emac_remove()\nreturns. This creates a use-after-free window where:\n\n1. emac_remove() is called, which tears down hardware (cancels work, detaches\n   modules, unregisters from MAL)\n2. emac_remove() returns\n3. devres cleanup runs and finally calls unregister_netdev()\n\nDuring step 3, the network stack might still process packets, triggering\nemac_irq(), emac_poll(), or other handlers that access now-freed hardware\nresources (dev->emacp, dev->mal, etc.).\n\nFix this by replacing devm_register_netdev() with manual register_netdev()\nand calling unregister_netdev() at the beginning of emac_remove(), before\nany hardware teardown. This ensures the network device is fully stopped and\nunregistered before hardware resources are released.\n\nThe change is safe because:\n- dev->ndev is assigned very early in probe (before any error paths that\n  could bypass emac_remove)\n- platform_set_drvdata() is only called after successful registration, so\n  emac_remove() only runs for fully registered devices\n- unregister_netdev() is idempotent and safe to call on any registered device","published_at":"2026-06-25T08:39:31.852000Z","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/cf8e14db93eaecc4c0c58299be3b3183b0e53ed5","https://git.kernel.org/stable/c/c09c2e236eef6f59e105f38a30f5439e6ccbcad7","https://git.kernel.org/stable/c/c12584cd6078085d707266be864e7e1cc91d74e3","https://git.kernel.org/stable/c/a0130d682222ae21afc395aead7cd2d87e1a8358"],"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":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":"a4dd8535a527061a01f2fd335596fa77ca240a96","version_start_inclusive":true,"version_end":"cf8e14db93eaecc4c0c58299be3b3183b0e53ed5","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:a4dd8535a527061a01f2fd335596fa77ca240a96:cf8e14db93eaecc4c0c58299be3b3183b0e53ed5"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"a4dd8535a527061a01f2fd335596fa77ca240a96","version_start_inclusive":true,"version_end":"c09c2e236eef6f59e105f38a30f5439e6ccbcad7","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:a4dd8535a527061a01f2fd335596fa77ca240a96:c09c2e236eef6f59e105f38a30f5439e6ccbcad7"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"a4dd8535a527061a01f2fd335596fa77ca240a96","version_start_inclusive":true,"version_end":"c12584cd6078085d707266be864e7e1cc91d74e3","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:a4dd8535a527061a01f2fd335596fa77ca240a96:c12584cd6078085d707266be864e7e1cc91d74e3"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"a4dd8535a527061a01f2fd335596fa77ca240a96","version_start_inclusive":true,"version_end":"a0130d682222ae21afc395aead7cd2d87e1a8358","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:a4dd8535a527061a01f2fd335596fa77ca240a96:a0130d682222ae21afc395aead7cd2d87e1a8358"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12","version_start_inclusive":true,"version_end":"6.12","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.12:6.12"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"6.12","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:6.12"},{"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/cf8e14db93eaecc4c0c58299be3b3183b0e53ed5","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/c09c2e236eef6f59e105f38a30f5439e6ccbcad7","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/c12584cd6078085d707266be864e7e1cc91d74e3","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/a0130d682222ae21afc395aead7cd2d87e1a8358","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-25T08:39:31.852000Z","label":"CVE published","source":null}]}