CVE-2026-89510

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.

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-25)

Published

2026-09-11

Modified

2026-10-19

Record from

the NVD, synced 2026-10-19

References

• https://git.kernel.org/stable/c/320e5258a53af0abc5abd9eb01519a48bab2dee8
• https://git.kernel.org/stable/c/3265d558dfafab8f12f5fba06ebbf15cae9f3225
• https://git.kernel.org/stable/c/4681e731db07769846901cfabdd3e53f765eb9d3
• https://git.kernel.org/stable/c/672ee1981db10569ec96030bddb322f18382ec04
• https://git.kernel.org/stable/c/85f438382a865a4dc4c50e6b884310bb2b60fc4d

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