# CVE-2026-89510

## Summary

- **CVE ID:** CVE-2026-89510
- **Severity:** HIGH
- **CVSS Score:** 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** N/A
- **Published:** Sep 11, 2026
- **Last Modified:** Sep 14, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:

RDMA/cxgb4: Cancel reg_work before freeing device on remove

c4iw_uld_state_change() queues reg_work to register the RDMA device.
c4iw_remove() can free ctx->dev while this work is pending or running,
leaving c4iw_register_device() accessing the freed device.

Cancel reg_work before removing the device.  The registration work can
tear down ctx->dev when registration fails, so do not unregister or
deallocate it again in that case.

This issue was found by an in-house static analysis tool.

## Affected Products

- Linux — Linux (1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5)
- Linux — Linux (4.15)
- Linux — Linux (0)
- Linux — Linux (6.12.109)
- Linux — Linux (6.18.50)
- Linux — Linux (7.2.4)
- Linux — Linux (7.3-rc1)
- Linux — Linux (5.10.270)
- Linux — Linux (5.15.221)
- Linux — Linux (6.1.188)
- Linux — Linux (6.6.157)

## References

- [CNA](https://git.kernel.org/stable/c/fe9c591026c576d8b1f72aab5e4cd67350530763)
- [CNA](https://git.kernel.org/stable/c/85f438382a865a4dc4c50e6b884310bb2b60fc4d)
- [CNA](https://git.kernel.org/stable/c/320e5258a53af0abc5abd9eb01519a48bab2dee8)
- [CNA](https://git.kernel.org/stable/c/a7100601aa1a39f799a566acce10db20eaf4b7f2)
- [CNA](https://git.kernel.org/stable/c/e6e79e7be87c5ea92728060a3d7fb56890a91e45)
- [CNA](https://git.kernel.org/stable/c/672ee1981db10569ec96030bddb322f18382ec04)
- [CNA](https://git.kernel.org/stable/c/4681e731db07769846901cfabdd3e53f765eb9d3)
- [CNA](https://git.kernel.org/stable/c/3265d558dfafab8f12f5fba06ebbf15cae9f3225)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.18%
- **EPSS Percentile:** 7.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._