CVE-2026-23239

In the Linux kernel, the following vulnerability has been resolved: espintcp: Fix race condition in espintcp_close() This issue was discovered during a code audit. After cancel_work_sync() is called from espintcp_close(), espintcp_tx_work() can still be scheduled from paths such as the Delayed ACK handler or ksoftirqd. As a result, the espintcp_tx_work() worker may dereference a freed espintcp ctx or sk. The following is a simple race scenario: cpu0 cpu1 espintcp_close() cancel_work_sync(&ctx->work); espintcp_write_space() schedule_work(&ctx->work); To prevent this race condition, cancel_work_sync() is replaced with disable_work_sync().

The following products are affected by CVE-2026-23239 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-23239.

URL	Resource
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
https://lore.kernel.org/linux-cve-announce/2026031031-CVE-2026-23239-1fc9@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2026-23239
https://www.cve.org/CVERecord?id=CVE-2026-23239