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.
References
Configurations
Configuration 1 (hide)
|
History
06 Oct 2025, 20:31
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-362 | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| First Time |
Linux
Linux linux Kernel |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| References | () https://git.kernel.org/stable/c/03e7b2f7ae4c0ae5fb8e4e2454ba4008877f196a - Patch | |
| References | () https://git.kernel.org/stable/c/58bfd311c93d66d8282bf21ebbf35cc3bb8ad9db - Patch | |
| References | () https://git.kernel.org/stable/c/70aa1f2dec46b6fdb5f6b9f37b6bfa4a4dee0d3a - Patch | |
| References | () https://git.kernel.org/stable/c/9fd8ddd23793a50dbcd11c6ba51f437f1ea7d344 - Patch | |
| References | () https://git.kernel.org/stable/c/a421cc7a6a001b70415aa4f66024fa6178885a14 - Patch | |
| References | () https://git.kernel.org/stable/c/bdbc4ca77f5eaac15de7230814253cddfed273b1 - Patch |
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')