{"cve":{"cve_id":"CVE-2026-52935","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: espintcp: do not reuse an in-progress partial send\n\nespintcp keeps a single in-flight transmit in ctx->partial.\nBefore building a new sk_msg, espintcp_sendmsg() first tries to flush\nthat state through espintcp_push_msgs().\n\nFor blocking callers, espintcp_push_msgs() may return success even when\nthe previous partial send is still pending. espintcp_sendmsg() would\nthen reinitialize emsg->skmsg and reuse ctx->partial while the old\ntransfer still owns that state.\n\nDo not rebuild the send message when ctx->partial is still in progress.\nIf espintcp_push_msgs() returns with emsg->len still set, fail the new\nsend instead of overwriting the live partial state.\n\nThis is a memory-safety fix: reusing the live partial-send state can\nleave a stale offset attached to a new sk_msg and lead to an out-of-\nbounds read in the send path.\n\ntcp_sendmsg_locked() already handles waiting for send buffer memory, so\nthe fix here is just to preserve espintcp's one-message-at-a-time\ntransmit state.","published_at":"2026-06-24T07:14:25.988000Z","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/6564e9c7af7e1dc7bfe7f3093b728abe484d7630","https://git.kernel.org/stable/c/1777ceac4bea5e568a5ad44b7f9bb219c1db21b6","https://git.kernel.org/stable/c/8c6c691bf062dc0753a139a4ab8cb92a70fcf8f3","https://git.kernel.org/stable/c/aa82a078f70f7ff88ba7d1017134e79d1ac140f2","https://git.kernel.org/stable/c/ba21439302db9a82fe4edbed1e38a97271529421","https://git.kernel.org/stable/c/f9b38a8fbfa07f1deaf7ee1eb38fa8b21ea13990","https://git.kernel.org/stable/c/37487d55bf3300e3d2c1368da5c2bd3e3834ea4f","https://git.kernel.org/stable/c/c381039ade2e161ab08c0eda73c4f8b9a7115928"],"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":"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":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","version_start_inclusive":true,"version_end":"6564e9c7af7e1dc7bfe7f3093b728abe484d7630","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:e27cca96cd68fa2c6814c90f9a1cfd36bb68c593:6564e9c7af7e1dc7bfe7f3093b728abe484d7630"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","version_start_inclusive":true,"version_end":"1777ceac4bea5e568a5ad44b7f9bb219c1db21b6","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:e27cca96cd68fa2c6814c90f9a1cfd36bb68c593:1777ceac4bea5e568a5ad44b7f9bb219c1db21b6"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","version_start_inclusive":true,"version_end":"8c6c691bf062dc0753a139a4ab8cb92a70fcf8f3","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:e27cca96cd68fa2c6814c90f9a1cfd36bb68c593:8c6c691bf062dc0753a139a4ab8cb92a70fcf8f3"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","version_start_inclusive":true,"version_end":"aa82a078f70f7ff88ba7d1017134e79d1ac140f2","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:e27cca96cd68fa2c6814c90f9a1cfd36bb68c593:aa82a078f70f7ff88ba7d1017134e79d1ac140f2"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","version_start_inclusive":true,"version_end":"ba21439302db9a82fe4edbed1e38a97271529421","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:e27cca96cd68fa2c6814c90f9a1cfd36bb68c593:ba21439302db9a82fe4edbed1e38a97271529421"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","version_start_inclusive":true,"version_end":"f9b38a8fbfa07f1deaf7ee1eb38fa8b21ea13990","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:e27cca96cd68fa2c6814c90f9a1cfd36bb68c593:f9b38a8fbfa07f1deaf7ee1eb38fa8b21ea13990"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","version_start_inclusive":true,"version_end":"37487d55bf3300e3d2c1368da5c2bd3e3834ea4f","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:e27cca96cd68fa2c6814c90f9a1cfd36bb68c593:37487d55bf3300e3d2c1368da5c2bd3e3834ea4f"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","version_start_inclusive":true,"version_end":"c381039ade2e161ab08c0eda73c4f8b9a7115928","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:e27cca96cd68fa2c6814c90f9a1cfd36bb68c593:c381039ade2e161ab08c0eda73c4f8b9a7115928"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.6","version_start_inclusive":true,"version_end":"5.6","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.6:5.6"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"5.6","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:5.6"},{"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/6564e9c7af7e1dc7bfe7f3093b728abe484d7630","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/1777ceac4bea5e568a5ad44b7f9bb219c1db21b6","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/8c6c691bf062dc0753a139a4ab8cb92a70fcf8f3","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/aa82a078f70f7ff88ba7d1017134e79d1ac140f2","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/ba21439302db9a82fe4edbed1e38a97271529421","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/f9b38a8fbfa07f1deaf7ee1eb38fa8b21ea13990","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/37487d55bf3300e3d2c1368da5c2bd3e3834ea4f","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/c381039ade2e161ab08c0eda73c4f8b9a7115928","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-24T07:14:25.988000Z","label":"CVE published","source":null}]}