CVE-2026-23239

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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().

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/022ff7f347588de6e17879a1da6019647b21321b Patch
https://git.kernel.org/stable/c/664e9df53226b4505a0894817ecad2c610ab11d8 Patch
https://git.kernel.org/stable/c/e1512c1db9e8794d8d130addd2615ec27231d994 Patch
https://git.kernel.org/stable/c/f7ad8b1d0e421c524604d5076b73232093490d5c Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
History

20 May 2026, 19:27

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/022ff7f347588de6e17879a1da6019647b21321b - () https://git.kernel.org/stable/c/022ff7f347588de6e17879a1da6019647b21321b - Patch
References () https://git.kernel.org/stable/c/664e9df53226b4505a0894817ecad2c610ab11d8 - () https://git.kernel.org/stable/c/664e9df53226b4505a0894817ecad2c610ab11d8 - Patch
References () https://git.kernel.org/stable/c/e1512c1db9e8794d8d130addd2615ec27231d994 - () https://git.kernel.org/stable/c/e1512c1db9e8794d8d130addd2615ec27231d994 - Patch
References () https://git.kernel.org/stable/c/f7ad8b1d0e421c524604d5076b73232093490d5c - () https://git.kernel.org/stable/c/f7ad8b1d0e421c524604d5076b73232093490d5c - Patch
First Time Linux linux Kernel
Linux
CWE CWE-362
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*

02 Apr 2026, 15:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
Summary
  • (es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: espintcp: Corrección de condición de carrera en espintcp_close() Este problema fue descubierto durante una auditoría de código. Después de que se llama a cancel_work_sync() desde espintcp_close(), espintcp_tx_work() aún puede ser programado desde rutas como el gestor de ACK Retrasado o ksoftirqd. Como resultado, el trabajador espintcp_tx_work() puede desreferenciar un ctx o sk de espintcp liberado. El siguiente es un escenario de condición de carrera simple: cpu0 cpu1 espintcp_close() cancel_work_sync(&ctx->work); espintcp_write_space() schedule_work(&ctx->work); Para prevenir esta condición de carrera, cancel_work_sync() es reemplazado por disable_work_sync().

10 Mar 2026, 18:18

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-10 18:18

Updated : 2026-05-20 19:27

NVD link : CVE-2026-23239

Mitre link : CVE-2026-23239

CVE.ORG link : CVE-2026-23239

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')