In the Linux kernel, the following vulnerability has been resolved:
drivers/perf: hisi: use cpuhp_state_remove_instance_nocalls() for hisi_hns3_pmu uninit process
When tearing down a 'hisi_hns3' PMU, we mistakenly run the CPU hotplug
callbacks after the device has been unregistered, leading to fireworks
when we try to execute empty function callbacks within the driver:
| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
| CPU: 0 PID: 15 Comm: cpuhp/0 Tainted: G W O 5.12.0-rc4+ #1
| Hardware name: , BIOS KpxxxFPGA 1P B600 V143 04/22/2021
| pstate: 80400009 (Nzcv daif +PAN -UAO -TCO BTYPE=--)
| pc : perf_pmu_migrate_context+0x98/0x38c
| lr : perf_pmu_migrate_context+0x94/0x38c
|
| Call trace:
| perf_pmu_migrate_context+0x98/0x38c
| hisi_hns3_pmu_offline_cpu+0x104/0x12c [hisi_hns3_pmu]
Use cpuhp_state_remove_instance_nocalls() instead of
cpuhp_state_remove_instance() so that the notifiers don't execute after
the PMU device has been unregistered.
[will: Rewrote commit message]
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MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-05-21T15:31:53.194Z
Updated: 2024-11-04T14:54:02.941Z
Reserved: 2024-05-21T15:19:24.261Z
Link: CVE-2023-52860
Vulnrichment
Updated: 2024-08-02T23:11:36.033Z
NVD
Status : Awaiting Analysis
Published: 2024-05-21T16:15:23.003
Modified: 2024-11-21T08:40:44.493
Link: CVE-2023-52860
Redhat