CVE-2026-23239High· 7.8▾ TwilightIn 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_…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.1%
Last analysed / modified upstream
0.1% → 0.1%
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().
Linux >= e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 < f7ad8b1d0e421c524604d5076b73232093490d5cLinux >= e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 < 664e9df53226b4505a0894817ecad2c610ab11d8Linux >= e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 < 022ff7f347588de6e17879a1da6019647b21321bLinux >= e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 < e1512c1db9e8794d8d130addd2615ec27231d994Linux 5.6Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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