{"cve":"CVE-2026-23239","nvd":{"published":"2026-03-10T18:18:13.383","modified":"2026-10-19T19:17:42.977","status":"Modified","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().","cvss_v4":null,"cvss_v3":{"version":"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},"cwes":["CWE-362"],"references":["https://git.kernel.org/stable/c/022ff7f347588de6e17879a1da6019647b21321b","https://git.kernel.org/stable/c/664e9df53226b4505a0894817ecad2c610ab11d8","https://git.kernel.org/stable/c/e1512c1db9e8794d8d130addd2615ec27231d994","https://git.kernel.org/stable/c/f7ad8b1d0e421c524604d5076b73232093490d5c"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2026-23239","score":0.0012,"percentile":0.01828,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}