{"id":"CVE-2026-23239","revision":"85c0d34cdb584cf3bcc81bdd26304ff5","records":[{"revision":"85c0d34cdb584cf3bcc81bdd26304ff5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-23239","aliases":[],"title":"espintcp: Fix race condition in espintcp_close()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nespintcp: Fix race condition in espintcp_close()\n\nThis issue was discovered during a code audit.\n\nAfter cancel_work_sync() is called from espintcp_close(),\nespintcp_tx_work() can still be scheduled from paths such as\nthe Delayed ACK handler or ksoftirqd.\nAs a result, the espintcp_tx_work() worker may dereference a\nfreed espintcp ctx or sk.\n\nThe following is a simple race scenario:\n\n           cpu0                             cpu1\n\n  espintcp_close()\n    cancel_work_sync(&ctx->work);\n                                     espintcp_write_space()\n                                       schedule_work(&ctx->work);\n\nTo prevent this race condition, cancel_work_sync() is\nreplaced with disable_work_sync().","state":0,"publishedAt":"2026-03-10T17:28:26.19+00:00","modifiedAt":"2026-10-19T18:35:39.619+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/xfrm/espintcp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593\",\n                            \"lessThan\": \"f7ad8b1d0e421c524604d5076b73232093490d5c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593\",\n                            \"lessThan\": \"664e9df53226b4505a0894817ecad2c610ab11d8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593\",\n                            \"lessThan\": \"022ff7f347588de6e17879a1da6019647b21321b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593\",\n                            \"lessThan\": \"e1512c1db9e8794d8d130addd2615ec27231d994\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/xfrm/espintcp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.75\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.16\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.6\",\n                            \"lessThanOrEqual\": \"6.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/f7ad8b1d0e421c524604d5076b73232093490d5c","https://git.kernel.org/stable/c/664e9df53226b4505a0894817ecad2c610ab11d8","https://git.kernel.org/stable/c/022ff7f347588de6e17879a1da6019647b21321b","https://git.kernel.org/stable/c/e1512c1db9e8794d8d130addd2615ec27231d994"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23239","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-23239","identifiers":["CVE-2026-23239"]},"retained":false,"historicalAffected":[]}],"coverage":[]}