CVE-2025-39815

Summary

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

RISC-V: KVM: fix stack overrun when loading vlenb

The userspace load can put up to 2048 bits into an xlen bit stack buffer. We want only xlen bits, so check the size beforehand.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2fa290372dfe7dd248b1c16f943f273a3e674f22 < c76bf8359188a11f8fd790e5bbd6077894a245ccaffected
LinuxLinux2fa290372dfe7dd248b1c16f943f273a3e674f22 < 6d28659b692a0212f360f8bd8a58712b339f9aacaffected
LinuxLinux2fa290372dfe7dd248b1c16f943f273a3e674f22 < 799766208f09f95677a9ab111b93872d414fbad7affected
LinuxLinux6.8affected
LinuxLinux0 < 6.8unaffected
LinuxLinux6.12.45 <= 6.12.*unaffected
LinuxLinux6.16.5 <= 6.16.*unaffected
LinuxLinux6.17 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References