{"cve":{"cve_id":"CVE-2026-53094","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 stale offload->prog pointer after constant blinding\n\nWhen a dev-bound-only BPF program (BPF_F_XDP_DEV_BOUND_ONLY) undergoes\nJIT compilation with constant blinding enabled (bpf_jit_harden >= 2),\nbpf_jit_blind_constants() clones the program. The original prog is then\nfreed in bpf_jit_prog_release_other(), which updates aux->prog to point\nto the surviving clone, but fails to update offload->prog.\n\nThis leaves offload->prog pointing to the freed original program. When\nthe network namespace is subsequently destroyed, cleanup_net() triggers\nbpf_dev_bound_netdev_unregister(), which iterates ondev->progs and calls\n__bpf_prog_offload_destroy(offload->prog). Accessing the freed prog\ncauses a page fault:\n\nBUG: unable to handle page fault for address: ffffc900085f1038\nWorkqueue: netns cleanup_net\nRIP: 0010:__bpf_prog_offload_destroy+0xc/0x80\nCall Trace:\n__bpf_offload_dev_netdev_unregister+0x257/0x350\nbpf_dev_bound_netdev_unregister+0x4a/0x90\nunregister_netdevice_many_notify+0x2a2/0x660\n...\ncleanup_net+0x21a/0x320\n\nThe test sequence that triggers this reliably is:\n\n1. Set net.core.bpf_jit_harden=2 (echo 2 > /proc/sys/net/core/bpf_jit_harden)\n2. Run xdp_metadata selftest, which creates a dev-bound-only XDP\n   program on a veth inside a netns (./test_progs -t xdp_metadata)\n3. cleanup_net -> page fault in __bpf_prog_offload_destroy\n\nDev-bound-only programs are unique in that they have an offload structure\nbut go through the normal JIT path instead of bpf_prog_offload_compile().\nThis means they are subject to constant blinding's prog clone-and-replace,\nwhile also having offload->prog that must stay in sync.\n\nFix this by updating offload->prog in bpf_jit_prog_release_other(),\nalongside the existing aux->prog update. Both are back-pointers to\nthe prog that must be kept in sync when the prog is replaced.","published_at":"2026-06-24T16:30:32.815000Z","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/a713b72ff88cdab4d5d692908ab1259ada511f4d","https://git.kernel.org/stable/c/25484c39d1ec82a0368798d956da3de5039b3fe8","https://git.kernel.org/stable/c/059525cf18e69a9313baf947d8898c6ee7ca6b65","https://git.kernel.org/stable/c/c79f8503d83d4665be461fb9e45e215d0380c67b","https://git.kernel.org/stable/c/a1aa9ef47c299c5bbc30594d3c2f0589edf908e6"],"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":"2b3486bc2d237ec345b3942b7be5deabf8c8fed1","version_start_inclusive":true,"version_end":"a713b72ff88cdab4d5d692908ab1259ada511f4d","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2b3486bc2d237ec345b3942b7be5deabf8c8fed1:a713b72ff88cdab4d5d692908ab1259ada511f4d"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2b3486bc2d237ec345b3942b7be5deabf8c8fed1","version_start_inclusive":true,"version_end":"25484c39d1ec82a0368798d956da3de5039b3fe8","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2b3486bc2d237ec345b3942b7be5deabf8c8fed1:25484c39d1ec82a0368798d956da3de5039b3fe8"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2b3486bc2d237ec345b3942b7be5deabf8c8fed1","version_start_inclusive":true,"version_end":"059525cf18e69a9313baf947d8898c6ee7ca6b65","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2b3486bc2d237ec345b3942b7be5deabf8c8fed1:059525cf18e69a9313baf947d8898c6ee7ca6b65"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2b3486bc2d237ec345b3942b7be5deabf8c8fed1","version_start_inclusive":true,"version_end":"c79f8503d83d4665be461fb9e45e215d0380c67b","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2b3486bc2d237ec345b3942b7be5deabf8c8fed1:c79f8503d83d4665be461fb9e45e215d0380c67b"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2b3486bc2d237ec345b3942b7be5deabf8c8fed1","version_start_inclusive":true,"version_end":"a1aa9ef47c299c5bbc30594d3c2f0589edf908e6","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:2b3486bc2d237ec345b3942b7be5deabf8c8fed1:a1aa9ef47c299c5bbc30594d3c2f0589edf908e6"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.3","version_start_inclusive":true,"version_end":"6.3","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.3:6.3"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"6.3","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:6.3"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.141","version_start_inclusive":true,"version_end":"6.6.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.6.141:6.6.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.91","version_start_inclusive":true,"version_end":"6.12.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.12.91:6.12.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.18.33","version_start_inclusive":true,"version_end":"6.18.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.18.33:6.18.*"},{"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/a713b72ff88cdab4d5d692908ab1259ada511f4d","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/25484c39d1ec82a0368798d956da3de5039b3fe8","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/059525cf18e69a9313baf947d8898c6ee7ca6b65","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/c79f8503d83d4665be461fb9e45e215d0380c67b","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/a1aa9ef47c299c5bbc30594d3c2f0589edf908e6","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-24T16:30:32.815000Z","label":"CVE published","source":null}]}