CVE-2026-46292

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-46292
In the Linux kernel, the following vulnerability has been resolved: pmdomain: core: Fix detach procedure for virtual devices in genpd If a device is attached to a PM domain through genpd_dev_pm_attach_by_id(), genpd calls pm_runtime_enable() for the corresponding virtual device that it registers. While this avoids boilerplate code in drivers, there is no corresponding call to pm_runtime_disable() in genpd_dev_pm_detach(). This means these virtual devices are typically detached from its genpd, while runtime PM remains enabled for them, which is not how things are designed to work. In worst cases it may lead to critical errors, like a NULL pointer dereference bug in genpd_runtime_suspend(), which was recently reported. For another case, we may end up keeping an unnecessary vote for a performance state for the device. To fix these problems, let's add this missing call to pm_runtime_disable() in genpd_dev_pm_detach().

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/26735dfdd8930d9ef1fa92e590a9bf77726efdf6 Patch
https://git.kernel.org/stable/c/361518a26e4434e879db6ff43bf364795dcbfbff Patch
https://git.kernel.org/stable/c/51a7dd9cbae9210335ce398642ecaaa52c939eb5 Patch
https://git.kernel.org/stable/c/52e485ed0dcb5496864003ba9ffcef7d5b613f83 Patch
https://git.kernel.org/stable/c/707cb5df3eab32ddc52979418f7ace62941e6381 Patch
https://git.kernel.org/stable/c/8d44391a7f29e4601e8243f13498d0219bab2576 Patch
https://git.kernel.org/stable/c/98b8104978474d381256a2b2fb0e7ca8e05a7bfa Patch
https://git.kernel.org/stable/c/e8f8dad44f024a5c99e54a48ad5c943fa8e54319 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:*:*:*:*:*:*:*:*
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:7.1:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
History

23 Jul 2026, 08:10

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: pmdomain: core: Soluciona el procedimiento de desvinculación para dispositivos virtuales en genpd Si un dispositivo se adjunta a un dominio de PM a través de genpd_dev_pm_attach_by_id(), genpd llama a pm_runtime_enable() para el dispositivo virtual correspondiente que registra. Si bien esto evita código repetitivo en los controladores, no hay una llamada correspondiente a pm_runtime_disable() en genpd_dev_pm_detach(). Esto significa que estos dispositivos virtuales suelen desvincularse de su genpd, mientras que el PM en tiempo de ejecución permanece habilitado para ellos, lo cual no es como las cosas están diseñadas para funcionar. En los peores casos puede llevar a errores críticos, como un error de desreferencia de puntero NULL en genpd_runtime_suspend(), el cual fue reportado recientemente. Para otro caso, podemos terminar manteniendo un voto innecesario para un estado de rendimiento para el dispositivo. Para solucionar estos problemas, agreguemos esta llamada faltante a pm_runtime_disable() en genpd_dev_pm_detach().

08 Jul 2026, 21:31

Type Values Removed Values Added
CWE CWE-772
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux linux Kernel
Linux
References () https://git.kernel.org/stable/c/26735dfdd8930d9ef1fa92e590a9bf77726efdf6 - () https://git.kernel.org/stable/c/26735dfdd8930d9ef1fa92e590a9bf77726efdf6 - Patch
References () https://git.kernel.org/stable/c/361518a26e4434e879db6ff43bf364795dcbfbff - () https://git.kernel.org/stable/c/361518a26e4434e879db6ff43bf364795dcbfbff - Patch
References () https://git.kernel.org/stable/c/51a7dd9cbae9210335ce398642ecaaa52c939eb5 - () https://git.kernel.org/stable/c/51a7dd9cbae9210335ce398642ecaaa52c939eb5 - Patch
References () https://git.kernel.org/stable/c/52e485ed0dcb5496864003ba9ffcef7d5b613f83 - () https://git.kernel.org/stable/c/52e485ed0dcb5496864003ba9ffcef7d5b613f83 - Patch
References () https://git.kernel.org/stable/c/707cb5df3eab32ddc52979418f7ace62941e6381 - () https://git.kernel.org/stable/c/707cb5df3eab32ddc52979418f7ace62941e6381 - Patch
References () https://git.kernel.org/stable/c/8d44391a7f29e4601e8243f13498d0219bab2576 - () https://git.kernel.org/stable/c/8d44391a7f29e4601e8243f13498d0219bab2576 - Patch
References () https://git.kernel.org/stable/c/98b8104978474d381256a2b2fb0e7ca8e05a7bfa - () https://git.kernel.org/stable/c/98b8104978474d381256a2b2fb0e7ca8e05a7bfa - Patch
References () https://git.kernel.org/stable/c/e8f8dad44f024a5c99e54a48ad5c943fa8e54319 - () https://git.kernel.org/stable/c/e8f8dad44f024a5c99e54a48ad5c943fa8e54319 - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*

19 Jun 2026, 13:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/52e485ed0dcb5496864003ba9ffcef7d5b613f83 -
  • () https://git.kernel.org/stable/c/98b8104978474d381256a2b2fb0e7ca8e05a7bfa -
  • () https://git.kernel.org/stable/c/e8f8dad44f024a5c99e54a48ad5c943fa8e54319 -

08 Jun 2026, 17:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-06-08 17:16

Updated : 2026-07-23 08:10

NVD link : CVE-2026-46292

Mitre link : CVE-2026-46292

CVE.ORG link : CVE-2026-46292

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-772

Missing Release of Resource after Effective Lifetime