High severity · published Sep 11, 2026
CVE-2026-89510
RDMA/cxgb4: Cancel reg_work before freeing device on remove
7.8
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Linux · Linux
1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 before e6e79e7be87c5ea92728060a3d7fb56890a91e45; 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 before 672ee1981db10569ec96030bddb322f18382ec04; 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 before 4681e731db07769846901cfabdd3e53f765eb9d3; 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 before 3265d558dfafab8f12f5fba06ebbf15cae9f3225; 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 before fe9c591026c576d8b1f72aab5e4cd67350530763; 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 before 85f438382a865a4dc4c50e6b884310bb2b60fc4d; +3 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89510
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-89510
git.kernel.org
https://git.kernel.org/stable/c/320e5258a53af0abc5abd9eb01519a48bab2dee8
git.kernel.org
https://git.kernel.org/stable/c/3265d558dfafab8f12f5fba06ebbf15cae9f3225
git.kernel.org
https://git.kernel.org/stable/c/4681e731db07769846901cfabdd3e53f765eb9d3
git.kernel.org
https://git.kernel.org/stable/c/672ee1981db10569ec96030bddb322f18382ec04
git.kernel.org
https://git.kernel.org/stable/c/85f438382a865a4dc4c50e6b884310bb2b60fc4d
git.kernel.org
https://git.kernel.org/stable/c/a7100601aa1a39f799a566acce10db20eaf4b7f2
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