CVE-2023-52860

Summary

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]

Affected Software

VendorProductVersion RangeStatus
LinuxLinux66637ab137b44914356a9dc7a9b3f8ebcf0b0695 < 4589403a343bb0c72a6faf5898386ff964d4e01aaffected
LinuxLinux66637ab137b44914356a9dc7a9b3f8ebcf0b0695 < 3f5827371763f2d9c70719c270055a81d030f3d0affected
LinuxLinux66637ab137b44914356a9dc7a9b3f8ebcf0b0695 < d04ff5437a45f275db5530efb49b68d0ec851f6faffected
LinuxLinux66637ab137b44914356a9dc7a9b3f8ebcf0b0695 < 50b560783f7f71790bcf70e9e9855155fb0af8c1affected
LinuxLinux6.0affected
LinuxLinux0 < 6.0unaffected
LinuxLinux6.1.63 <= 6.1.*unaffected
LinuxLinux6.5.12 <= 6.5.*unaffected
LinuxLinux6.6.2 <= 6.6.*unaffected
LinuxLinux6.7 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References