CVE-2025-37880

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-37880
In the Linux kernel, the following vulnerability has been resolved: um: work around sched_yield not yielding in time-travel mode sched_yield by a userspace may not actually cause scheduling in time-travel mode as no time has passed. In the case seen it appears to be a badly implemented userspace spinlock in ASAN. Unfortunately, with time-travel it causes an extreme slowdown or even deadlock depending on the kernel configuration (CONFIG_UML_MAX_USERSPACE_ITERATIONS). Work around it by accounting time to the process whenever it executes a sched_yield syscall.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/887c5c12e80c8424bd471122d2e8b6b462e12874 Patch
https://git.kernel.org/stable/c/990ddc65173776f1e01e7135d8c1fd5f8fd4d5d2 Patch
Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

12 Nov 2025, 19:54

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/887c5c12e80c8424bd471122d2e8b6b462e12874 - () https://git.kernel.org/stable/c/887c5c12e80c8424bd471122d2e8b6b462e12874 - Patch
References () https://git.kernel.org/stable/c/990ddc65173776f1e01e7135d8c1fd5f8fd4d5d2 - () https://git.kernel.org/stable/c/990ddc65173776f1e01e7135d8c1fd5f8fd4d5d2 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-667

18 May 2025, 07:15

Type Values Removed Values Added
References
  • {'url': 'https://git.kernel.org/stable/c/da780c4a075ba2deb05ae29f0af4a990578c7901', 'source': '416baaa9-dc9f-4396-8d5f-8c081fb06d67'}

12 May 2025, 17:32

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: um: solución alternativa para que sched_yield no ceda en modo de viaje en el tiempo. Es posible que la ejecución de sched_yield por un espacio de usuario no provoque la programación en modo de viaje en el tiempo, ya que no ha transcurrido tiempo. En el caso observado, parece tratarse de un bloqueo de giro del espacio de usuario mal implementado en ASAN. Desafortunadamente, con el viaje en el tiempo, causa una ralentización extrema o incluso un bloqueo, dependiendo de la configuración del kernel (CONFIG_UML_MAX_USERSPACE_ITERATIONS). Para solucionarlo, se contabiliza el tiempo del proceso cada vez que ejecuta una llamada al sistema sched_yield.

09 May 2025, 07:16

Type Values Removed Values Added
New CVE
Information

Published : 2025-05-09 07:16

Updated : 2025-11-12 19:54

NVD link : CVE-2025-37880

Mitre link : CVE-2025-37880

CVE.ORG link : CVE-2025-37880

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-667

Improper Locking