{"cve":{"cve_id":"CVE-2026-53089","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 use-after-free in offloaded map/prog info fill\n\nWhen querying info for an offloaded BPF map or program,\nbpf_map_offload_info_fill_ns() and bpf_prog_offload_info_fill_ns()\nobtain the network namespace with get_net(dev_net(offmap->netdev)).\nHowever, the associated netdev's netns may be racing with teardown\nduring netns destruction. If the netns refcount has already reached 0,\nget_net() performs a refcount_t increment on 0, triggering:\n\n  refcount_t: addition on 0; use-after-free.\n\nAlthough rtnl_lock and bpf_devs_lock ensure the netdev pointer remains\nvalid, they cannot prevent the netns refcount from reaching zero.\n\nFix this by using maybe_get_net() instead of get_net(). maybe_get_net()\nuses refcount_inc_not_zero() and returns NULL if the refcount is already\nzero, which causes ns_get_path_cb() to fail and the caller to return\n-ENOENT -- the correct behavior when the netns is being destroyed.","published_at":"2026-06-24T16:30:28.531000Z","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/a51e7fbe94a87e236631a83973d4f558310b2cd2","https://git.kernel.org/stable/c/a0c584fc18056709c8e047a82a6045d6c209f4ce"],"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":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":"4.16","version_start_inclusive":true,"version_end":"4.16","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:4.16:4.16"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"4.16","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:4.16"},{"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:*"},{"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":"675fc275a3a2d905535207237402c6d8dcb5fa4b","version_start_inclusive":true,"version_end":"a51e7fbe94a87e236631a83973d4f558310b2cd2","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:675fc275a3a2d905535207237402c6d8dcb5fa4b:a51e7fbe94a87e236631a83973d4f558310b2cd2"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"675fc275a3a2d905535207237402c6d8dcb5fa4b","version_start_inclusive":true,"version_end":"a0c584fc18056709c8e047a82a6045d6c209f4ce","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:675fc275a3a2d905535207237402c6d8dcb5fa4b:a0c584fc18056709c8e047a82a6045d6c209f4ce"}],"exploit_refs":[],"news":[],"references":[{"url":"https://git.kernel.org/stable/c/a51e7fbe94a87e236631a83973d4f558310b2cd2","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/a0c584fc18056709c8e047a82a6045d6c209f4ce","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-24T16:30:28.531000Z","label":"CVE published","source":null}]}