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CVE-2026-93132: ACPI: RISC-V: Fix riscv_acpi_add_prt_dep() loop handling

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-17 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: ACPI: RISC-V: Fix riscv_acpi_add_prt_dep() loop handling The loop in riscv_acpi_add_prt_dep() includes error conditions that are handled in a dubious - if not outright wrong - way, by continuining the loop (which skips and misses the entry pointer update to point to the next entry). Rewrite the loop as a for loop (that handles the continuation correctly) and wrap the condition and update statements using helper functions to make it cleaner.

Affected products

• Linux kernel: 6.12 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3a56321d0aceee2a0bd80d23366401c131ff8350
• https://git.kernel.org/stable/c/3fd86a5d6facb6618f63a76d499f28007cef878f
• https://git.kernel.org/stable/c/41652ca8c6ff2b77b9780cbbb2f20f1551b9ff80
• https://git.kernel.org/stable/c/c9729ced165d6c5b57d99141b6632bb8711efec9

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