High 7.8Published Sep 11, 2026

CVE-2026-89510RDMA/cxgb4: Cancel reg_work before freeing device on remove

Updated under an hour ago (Oct 28, 2026, 4:00 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 before e6e79e7be87c5ea92728060a3d7fb56890a91e45; from 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 before 672ee1981db10569ec96030bddb322f18382ec04; from 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 before 4681e731db07769846901cfabdd3e53f765eb9d3; from 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 before 3265d558dfafab8f12f5fba06ebbf15cae9f3225; from 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 before fe9c591026c576d8b1f72aab5e4cd67350530763; from 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 before 85f438382a865a4dc4c50e6b884310bb2b60fc4d; from 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 before 320e5258a53af0abc5abd9eb01519a48bab2dee8; from 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 before a7100601aa1a39f799a566acce10db20eaf4b7f2	CNA record

References

References

https://git.kernel.org/stable/c/e6e79e7be87c5ea92728060a3d7fb56890a91e45
https://git.kernel.org/stable/c/672ee1981db10569ec96030bddb322f18382ec04
https://git.kernel.org/stable/c/4681e731db07769846901cfabdd3e53f765eb9d3
https://git.kernel.org/stable/c/3265d558dfafab8f12f5fba06ebbf15cae9f3225
https://git.kernel.org/stable/c/fe9c591026c576d8b1f72aab5e4cd67350530763
https://git.kernel.org/stable/c/85f438382a865a4dc4c50e6b884310bb2b60fc4d
https://git.kernel.org/stable/c/320e5258a53af0abc5abd9eb01519a48bab2dee8
https://git.kernel.org/stable/c/a7100601aa1a39f799a566acce10db20eaf4b7f2

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.