CVE-2024-40976

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-40976
In the Linux kernel, the following vulnerability has been resolved: drm/lima: mask irqs in timeout path before hard reset There is a race condition in which a rendering job might take just long enough to trigger the drm sched job timeout handler but also still complete before the hard reset is done by the timeout handler. This runs into race conditions not expected by the timeout handler. In some very specific cases it currently may result in a refcount imbalance on lima_pm_idle, with a stack dump such as: [10136.669170] WARNING: CPU: 0 PID: 0 at drivers/gpu/drm/lima/lima_devfreq.c:205 lima_devfreq_record_idle+0xa0/0xb0 ... [10136.669459] pc : lima_devfreq_record_idle+0xa0/0xb0 ... [10136.669628] Call trace: [10136.669634] lima_devfreq_record_idle+0xa0/0xb0 [10136.669646] lima_sched_pipe_task_done+0x5c/0xb0 [10136.669656] lima_gp_irq_handler+0xa8/0x120 [10136.669666] __handle_irq_event_percpu+0x48/0x160 [10136.669679] handle_irq_event+0x4c/0xc0 We can prevent that race condition entirely by masking the irqs at the beginning of the timeout handler, at which point we give up on waiting for that job entirely. The irqs will be enabled again at the next hard reset which is already done as a recovery by the timeout handler.

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/03e7b2f7ae4c0ae5fb8e4e2454ba4008877f196a Patch
https://git.kernel.org/stable/c/58bfd311c93d66d8282bf21ebbf35cc3bb8ad9db Patch
https://git.kernel.org/stable/c/70aa1f2dec46b6fdb5f6b9f37b6bfa4a4dee0d3a Patch
https://git.kernel.org/stable/c/9fd8ddd23793a50dbcd11c6ba51f437f1ea7d344 Patch
https://git.kernel.org/stable/c/a421cc7a6a001b70415aa4f66024fa6178885a14 Patch
https://git.kernel.org/stable/c/bdbc4ca77f5eaac15de7230814253cddfed273b1 Patch
https://git.kernel.org/stable/c/03e7b2f7ae4c0ae5fb8e4e2454ba4008877f196a Patch
https://git.kernel.org/stable/c/58bfd311c93d66d8282bf21ebbf35cc3bb8ad9db Patch
https://git.kernel.org/stable/c/70aa1f2dec46b6fdb5f6b9f37b6bfa4a4dee0d3a Patch
https://git.kernel.org/stable/c/9fd8ddd23793a50dbcd11c6ba51f437f1ea7d344 Patch
https://git.kernel.org/stable/c/a421cc7a6a001b70415aa4f66024fa6178885a14 Patch
https://git.kernel.org/stable/c/bdbc4ca77f5eaac15de7230814253cddfed273b1 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:*:*:*:*:*:*:*:*
History

06 Oct 2025, 20:31

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux linux Kernel
Linux
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-362
References () https://git.kernel.org/stable/c/03e7b2f7ae4c0ae5fb8e4e2454ba4008877f196a - () https://git.kernel.org/stable/c/03e7b2f7ae4c0ae5fb8e4e2454ba4008877f196a - Patch
References () https://git.kernel.org/stable/c/58bfd311c93d66d8282bf21ebbf35cc3bb8ad9db - () https://git.kernel.org/stable/c/58bfd311c93d66d8282bf21ebbf35cc3bb8ad9db - Patch
References () https://git.kernel.org/stable/c/70aa1f2dec46b6fdb5f6b9f37b6bfa4a4dee0d3a - () https://git.kernel.org/stable/c/70aa1f2dec46b6fdb5f6b9f37b6bfa4a4dee0d3a - Patch
References () https://git.kernel.org/stable/c/9fd8ddd23793a50dbcd11c6ba51f437f1ea7d344 - () https://git.kernel.org/stable/c/9fd8ddd23793a50dbcd11c6ba51f437f1ea7d344 - Patch
References () https://git.kernel.org/stable/c/a421cc7a6a001b70415aa4f66024fa6178885a14 - () https://git.kernel.org/stable/c/a421cc7a6a001b70415aa4f66024fa6178885a14 - Patch
References () https://git.kernel.org/stable/c/bdbc4ca77f5eaac15de7230814253cddfed273b1 - () https://git.kernel.org/stable/c/bdbc4ca77f5eaac15de7230814253cddfed273b1 - Patch

21 Nov 2024, 09:31

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/lima: enmascara irqs en la ruta de tiempo de espera antes del restablecimiento completo. Existe una condición de ejecución en la que un trabajo de renderizado puede tardar el tiempo suficiente para activar el controlador de tiempo de espera del trabajo programado drm, pero también completar antes de que el controlador de tiempo de espera realice el restablecimiento completo. Esto se encuentra con condiciones de ejecución que el controlador de tiempo de espera no esperaba. En algunos casos muy específicos, actualmente puede resultar en un desequilibrio de recuento en lima_pm_idle, con un volcado de pila como: [10136.669170] ADVERTENCIA: CPU: 0 PID: 0 en drivers/gpu/drm/lima/lima_devfreq.c:205 lima_devfreq_record_idle+ 0xa0/0xb0... [10136.669459] pc: lima_devfreq_record_idle+0xa0/0xb0... [10136.669628] Rastreo de llamadas: [10136.669634] lima_devfreq_record_idle+0xa0/0xb0 [10136.669646] lima_sched_pipe_tas k_done+0x5c/0xb0 [10136.669656] lima_gp_irq_handler+0xa8/0x120 [ 10136.669666] __handle_irq_event_percpu+0x48/0x160 [10136.669679] handle_irq_event+0x4c/0xc0 Podemos evitar esa condición de ejecución por completo enmascarando los irqs al comienzo del controlador de tiempo de espera, momento en el cual renunciamos a esperar por ese trabajo por completo. Los irqs se habilitarán nuevamente en el próximo restablecimiento completo, que ya se realiza como recuperación mediante el controlador de tiempo de espera.
References () https://git.kernel.org/stable/c/03e7b2f7ae4c0ae5fb8e4e2454ba4008877f196a - () https://git.kernel.org/stable/c/03e7b2f7ae4c0ae5fb8e4e2454ba4008877f196a -
References () https://git.kernel.org/stable/c/58bfd311c93d66d8282bf21ebbf35cc3bb8ad9db - () https://git.kernel.org/stable/c/58bfd311c93d66d8282bf21ebbf35cc3bb8ad9db -
References () https://git.kernel.org/stable/c/70aa1f2dec46b6fdb5f6b9f37b6bfa4a4dee0d3a - () https://git.kernel.org/stable/c/70aa1f2dec46b6fdb5f6b9f37b6bfa4a4dee0d3a -
References () https://git.kernel.org/stable/c/9fd8ddd23793a50dbcd11c6ba51f437f1ea7d344 - () https://git.kernel.org/stable/c/9fd8ddd23793a50dbcd11c6ba51f437f1ea7d344 -
References () https://git.kernel.org/stable/c/a421cc7a6a001b70415aa4f66024fa6178885a14 - () https://git.kernel.org/stable/c/a421cc7a6a001b70415aa4f66024fa6178885a14 -
References () https://git.kernel.org/stable/c/bdbc4ca77f5eaac15de7230814253cddfed273b1 - () https://git.kernel.org/stable/c/bdbc4ca77f5eaac15de7230814253cddfed273b1 -

12 Jul 2024, 13:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-07-12 13:15

Updated : 2025-10-06 20:31

NVD link : CVE-2024-40976

Mitre link : CVE-2024-40976

CVE.ORG link : CVE-2024-40976

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-362

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