CVE-2024-43868

Summary

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

riscv/purgatory: align riscv_kernel_entry

When alignment handling is delegated to the kernel, everything must be word-aligned in purgatory, since the trap handler is then set to the kexec one. Without the alignment, hitting the exception would ultimately crash. On other occasions, the kernel's handler would take care of exceptions. This has been tested on a JH7110 SoC with oreboot and its SBI delegating unaligned access exceptions and the kernel configured to handle them.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux736e30af583fb6e0e2b8211b894ff99dea0f1ee7 < 10ffafb456f293976c42f700578ef740467cb569affected
LinuxLinux736e30af583fb6e0e2b8211b894ff99dea0f1ee7 < 6e62dab357eea12db0fc62dea94c7a892888e6e8affected
LinuxLinux736e30af583fb6e0e2b8211b894ff99dea0f1ee7 < 5d4aaf16a8255f7c71790e211724ba029609c5ffaffected
LinuxLinux736e30af583fb6e0e2b8211b894ff99dea0f1ee7 < fb197c5d2fd24b9af3d4697d0cf778645846d6d5affected
LinuxLinux5.19affected
LinuxLinux0 < 5.19unaffected
LinuxLinux6.1.117 <= 6.1.*unaffected
LinuxLinux6.6.61 <= 6.6.*unaffected
LinuxLinux6.10.4 <= 6.10.*unaffected
LinuxLinux6.11 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References