{"cve":{"cve_id":"CVE-2026-53239","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\nxfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx()\n\nFix the race by pruning the bin while still holding xfrm_policy_lock,\nbefore dropping it. Use __xfrm_policy_inexact_prune_bin() directly since\nthe lock is already held. The wrapper xfrm_policy_inexact_prune_bin()\nbecomes unused and is removed.\n\nRace:\n\n  CPU0 (XFRM_MSG_DELPOLICY)           CPU1 (XFRM_MSG_NEWSPDINFO)\n  ==========================          ==========================\n  xfrm_policy_bysel_ctx():\n    spin_lock_bh(xfrm_policy_lock)\n    bin = xfrm_policy_inexact_lookup()\n    __xfrm_policy_unlink(pol)\n    spin_unlock_bh(xfrm_policy_lock)\n    xfrm_policy_kill(ret)\n    // wide window, lock not held\n                                       xfrm_hash_rebuild():\n                                         spin_lock_bh(xfrm_policy_lock)\n                                         __xfrm_policy_inexact_flush():\n                                           kfree_rcu(bin)  // bin freed\n                                         spin_unlock_bh(xfrm_policy_lock)\n    xfrm_policy_inexact_prune_bin(bin)\n    // UAF: bin is freed","published_at":"2026-06-25T08:39:35.149000Z","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/8fc536e9f6856230f19c7d13e71af064b6a77b22","https://git.kernel.org/stable/c/c4c1ea36d83bf3c4569468ca5b8b614fda1bf821","https://git.kernel.org/stable/c/25c8c7fb3b0b9668c7d05e209f58c158d2b020c7","https://git.kernel.org/stable/c/42827d03f8009a6a218bacab153e21f39d6a121c","https://git.kernel.org/stable/c/88697cf980222d5906a37bf47662dac0732e2a0f","https://git.kernel.org/stable/c/b5316e2b8614a87d8736941972441cb47bfd4491","https://git.kernel.org/stable/c/ec82ea4eb220164d854f8734ca5a35e23e577b94","https://git.kernel.org/stable/c/7f2d76c9c03257c0782afef9d95321fa04096f60"],"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":"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":"6be3b0db6db82cf056a72cc18042048edd27f8ee","version_start_inclusive":true,"version_end":"8fc536e9f6856230f19c7d13e71af064b6a77b22","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6be3b0db6db82cf056a72cc18042048edd27f8ee:8fc536e9f6856230f19c7d13e71af064b6a77b22"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6be3b0db6db82cf056a72cc18042048edd27f8ee","version_start_inclusive":true,"version_end":"c4c1ea36d83bf3c4569468ca5b8b614fda1bf821","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6be3b0db6db82cf056a72cc18042048edd27f8ee:c4c1ea36d83bf3c4569468ca5b8b614fda1bf821"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6be3b0db6db82cf056a72cc18042048edd27f8ee","version_start_inclusive":true,"version_end":"25c8c7fb3b0b9668c7d05e209f58c158d2b020c7","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6be3b0db6db82cf056a72cc18042048edd27f8ee:25c8c7fb3b0b9668c7d05e209f58c158d2b020c7"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6be3b0db6db82cf056a72cc18042048edd27f8ee","version_start_inclusive":true,"version_end":"42827d03f8009a6a218bacab153e21f39d6a121c","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6be3b0db6db82cf056a72cc18042048edd27f8ee:42827d03f8009a6a218bacab153e21f39d6a121c"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6be3b0db6db82cf056a72cc18042048edd27f8ee","version_start_inclusive":true,"version_end":"88697cf980222d5906a37bf47662dac0732e2a0f","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6be3b0db6db82cf056a72cc18042048edd27f8ee:88697cf980222d5906a37bf47662dac0732e2a0f"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6be3b0db6db82cf056a72cc18042048edd27f8ee","version_start_inclusive":true,"version_end":"b5316e2b8614a87d8736941972441cb47bfd4491","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6be3b0db6db82cf056a72cc18042048edd27f8ee:b5316e2b8614a87d8736941972441cb47bfd4491"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6be3b0db6db82cf056a72cc18042048edd27f8ee","version_start_inclusive":true,"version_end":"ec82ea4eb220164d854f8734ca5a35e23e577b94","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6be3b0db6db82cf056a72cc18042048edd27f8ee:ec82ea4eb220164d854f8734ca5a35e23e577b94"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6be3b0db6db82cf056a72cc18042048edd27f8ee","version_start_inclusive":true,"version_end":"7f2d76c9c03257c0782afef9d95321fa04096f60","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6be3b0db6db82cf056a72cc18042048edd27f8ee:7f2d76c9c03257c0782afef9d95321fa04096f60"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.0","version_start_inclusive":true,"version_end":"5.0","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.0:5.0"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"5.0","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:5.0"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.10.259","version_start_inclusive":true,"version_end":"5.10.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.10.259:5.10.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.15.210","version_start_inclusive":true,"version_end":"5.15.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.15.210:5.15.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.1.176","version_start_inclusive":true,"version_end":"6.1.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.1.176:6.1.*"},{"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/8fc536e9f6856230f19c7d13e71af064b6a77b22","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/c4c1ea36d83bf3c4569468ca5b8b614fda1bf821","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/25c8c7fb3b0b9668c7d05e209f58c158d2b020c7","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/42827d03f8009a6a218bacab153e21f39d6a121c","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/88697cf980222d5906a37bf47662dac0732e2a0f","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/b5316e2b8614a87d8736941972441cb47bfd4491","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/ec82ea4eb220164d854f8734ca5a35e23e577b94","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/7f2d76c9c03257c0782afef9d95321fa04096f60","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-25T08:39:35.149000Z","label":"CVE published","source":null}]}