CVE-2024-42140

Summary

In the Linux kernel, the following vulnerability has been resolved:

riscv: kexec: Avoid deadlock in kexec crash path

If the kexec crash code is called in the interrupt context, the machine_kexec_mask_interrupts() function will trigger a deadlock while trying to acquire the irqdesc spinlock and then deactivate irqchip in irq_set_irqchip_state() function.

Unlike arm64, riscv only requires irq_eoi handler to complete EOI and keeping irq_set_irqchip_state() will only leave this possible deadlock without any use. So we simply remove it.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux12f237200c169a8667cf9dca7a40df8d7917b9fd < bb80a7911218bbab2a69b5db7d2545643ab0073daffected
LinuxLinuxb17d19a5314a37f7197afd1a0200affd21a7227d < 653deee48a4682ea17a05b96fb6842795ab5943caffected
LinuxLinuxb17d19a5314a37f7197afd1a0200affd21a7227d < 7692c9b6baacdee378435f58f19baf0eb69e4155affected
LinuxLinuxb17d19a5314a37f7197afd1a0200affd21a7227d < 484dd545271d02d1571e1c6b62ea7df9dbe5e692affected
LinuxLinuxb17d19a5314a37f7197afd1a0200affd21a7227d < c562ba719df570c986caf0941fea2449150bcbc4affected
LinuxLinux7594956fec8902dfc18150bf1dca0940cd4ad025affected
LinuxLinux5.15.82 < 5.15.163affected
LinuxLinux6.0.12 < 6.1affected
LinuxLinux6.1affected
LinuxLinux0 < 6.1unaffected
LinuxLinux5.15.163 <= 5.15.*unaffected
LinuxLinux6.1.98 <= 6.1.*unaffected
LinuxLinux6.6.39 <= 6.6.*unaffected
LinuxLinux6.9.9 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References