CVE-2026-89510high

CVE-2026-89510: high-severity vulnerability in Linux

RDMA/cxgb4: Cancel reg_work before freeing device on remove

Published · Updated

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.8epss 0.2%
exploitation probability
0.2%top 93% of all CVEs
observed exploitation
nono source reports it
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/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · Linux
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References
https://git.kernel.org/stable/c/320e5258a53af0abc5abd9eb01519a48bab2dee8https://git.kernel.org/stable/c/3265d558dfafab8f12f5fba06ebbf15cae9f3225https://git.kernel.org/stable/c/4681e731db07769846901cfabdd3e53f765eb9d3https://git.kernel.org/stable/c/672ee1981db10569ec96030bddb322f18382ec04https://git.kernel.org/stable/c/85f438382a865a4dc4c50e6b884310bb2b60fc4dhttps://git.kernel.org/stable/c/a7100601aa1a39f799a566acce10db20eaf4b7f2https://git.kernel.org/stable/c/e6e79e7be87c5ea92728060a3d7fb56890a91e45https://git.kernel.org/stable/c/fe9c591026c576d8b1f72aab5e4cd67350530763