CVE-2023-52860
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…
Does this matter?
Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.
Description
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]
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/3f5827371763f2d9c70719c270055a81d030f3d0Patch
- https://git.kernel.org/stable/c/4589403a343bb0c72a6faf5898386ff964d4e01aPatch
- https://git.kernel.org/stable/c/50b560783f7f71790bcf70e9e9855155fb0af8c1Patch
- https://git.kernel.org/stable/c/d04ff5437a45f275db5530efb49b68d0ec851f6fPatch
- https://git.kernel.org/stable/c/3f5827371763f2d9c70719c270055a81d030f3d0Patch
- https://git.kernel.org/stable/c/4589403a343bb0c72a6faf5898386ff964d4e01aPatch
- https://git.kernel.org/stable/c/50b560783f7f71790bcf70e9e9855155fb0af8c1Patch
- https://git.kernel.org/stable/c/d04ff5437a45f275db5530efb49b68d0ec851f6fPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.