{"cve":{"cve_id":"CVE-2026-52938","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 NULL pointer dereference in bpf_sk_storage_clone and diag paths\n\nbpf_selem_unlink_nofail() sets SDATA(selem)->smap to NULL before\nremoving the selem from the storage hlist. A concurrent RCU reader in\nbpf_sk_storage_clone() can observe the selem still on the list with\nsmap already NULL, causing a NULL pointer dereference.\n\n general protection fault, probably for non-canonical address 0xdffffc000000000a:\n KASAN: null-ptr-deref in range [0x0000000000000050-0x0000000000000057]\n RIP: 0010:bpf_sk_storage_clone+0x1cd/0xaa0 net/core/bpf_sk_storage.c:174\n Call Trace:\n  <IRQ>\n  sk_clone+0xfed/0x1980 net/core/sock.c:2591\n  inet_csk_clone_lock+0x30/0x760 net/ipv4/inet_connection_sock.c:1222\n  tcp_create_openreq_child+0x35/0x2680 net/ipv4/tcp_minisocks.c:571\n  tcp_v4_syn_recv_sock+0x123/0xf90 net/ipv4/tcp_ipv4.c:1729\n  tcp_check_req+0x8e1/0x2580 include/net/tcp.h:855\n  tcp_v4_rcv+0x1845/0x3b80 net/ipv4/tcp_ipv4.c:2347\n\nAdd a NULL check for smap in bpf_sk_storage_clone().\n\nbpf_sk_storage_diag_put_all() has the same issue. Add a NULL check\nand pass the validated smap directly to diag_get(), which is refactored\nto take smap as a parameter instead of reading it internally.\n\nbpf_sk_storage_diag_put() uses diag->maps[i] which is always valid\nunder its refcount, so diag->maps[i] is passed directly to diag_get().","published_at":"2026-06-24T07:14:27.952000Z","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/16af24fea29c209dea53595c99f6da9398548e1b","https://git.kernel.org/stable/c/375e4e33c18dfa05c5dfd5f3dfffeb29343dd4c7"],"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":"2026-06-28T17:55:22.518073Z","updated_at":"2026-06-28T23:30:49.890169Z"},"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":"5d800f87d0a5ea1b156c47a4b9fd128479335153","version_start_inclusive":true,"version_end":"16af24fea29c209dea53595c99f6da9398548e1b","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5d800f87d0a5ea1b156c47a4b9fd128479335153:16af24fea29c209dea53595c99f6da9398548e1b"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5d800f87d0a5ea1b156c47a4b9fd128479335153","version_start_inclusive":true,"version_end":"375e4e33c18dfa05c5dfd5f3dfffeb29343dd4c7","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5d800f87d0a5ea1b156c47a4b9fd128479335153:375e4e33c18dfa05c5dfd5f3dfffeb29343dd4c7"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0","version_start_inclusive":true,"version_end":"7.0","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0:7.0"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"7.0","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:7.0"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0.14","version_start_inclusive":true,"version_end":"7.0.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0.14:7.0.*"},{"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/16af24fea29c209dea53595c99f6da9398548e1b","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/375e4e33c18dfa05c5dfd5f3dfffeb29343dd4c7","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-24T07:14:27.952000Z","label":"CVE published","source":null}]}