Vulnerability Description
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().
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.6, < 6.12.75 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/022ff7f347588de6e17879a1da6019647b21321bPatch
- https://git.kernel.org/stable/c/664e9df53226b4505a0894817ecad2c610ab11d8Patch
- https://git.kernel.org/stable/c/e1512c1db9e8794d8d130addd2615ec27231d994Patch
- https://git.kernel.org/stable/c/f7ad8b1d0e421c524604d5076b73232093490d5cPatch
FAQ
What is CVE-2026-23239?
CVE-2026-23239 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 calle...
How severe is CVE-2026-23239?
CVE-2026-23239 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23239?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.