CVE-2026-23239espintcp: Fix race condition in espintcp_close()
Updated under an hour ago ()
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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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 before f7ad8b1d0e421c524604d5076b73232093490d5c; from e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 before 664e9df53226b4505a0894817ecad2c610ab11d8; from e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 before 022ff7f347588de6e17879a1da6019647b21321b; from e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 before e1512c1db9e8794d8d130addd2615ec27231d994 | CNA record |
linux linux_kernel linux:linux_kernel | from 5.6 before 6.12.75; from 6.13 before 6.18.16; from 6.19 before 6.19.6; 7.0 | NVD |
References
- https://git.kernel.org/stable/c/f7ad8b1d0e421c524604d5076b73232093490d5cpatch
- https://git.kernel.org/stable/c/664e9df53226b4505a0894817ecad2c610ab11d8patch
- https://git.kernel.org/stable/c/022ff7f347588de6e17879a1da6019647b21321bpatch
- https://git.kernel.org/stable/c/e1512c1db9e8794d8d130addd2615ec27231d994patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.