CVE-2026-89510

RDMA/cxgb4: Cancel reg_work before freeing device on remove

State: Published
Severity: 7.8 High
Published: Sep 11, 2026
Updated: Oct 19, 2026
Reserved: Sep 11, 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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before e6e79e7be87c5ea92728060a3d7fb56890a91e45Affected 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before 672ee1981db10569ec96030bddb322f18382ec04Affected 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before 4681e731db07769846901cfabdd3e53f765eb9d3Affected 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before 3265d558dfafab8f12f5fba06ebbf15cae9f3225Affected 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before fe9c591026c576d8b1f72aab5e4cd67350530763Affected 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before 85f438382a865a4dc4c50e6b884310bb2b60fc4dAffected 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before 320e5258a53af0abc5abd9eb01519a48bab2dee8Affected 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before a7100601aa1a39f799a566acce10db20eaf4b7f2Affected
LinuxLinux	4.15Affected before 4.15Not affected 5.10.270 through 5.10.Not affected 5.15.221 through 5.15.Not affected 6.1.188 through 6.1.Not affected 6.6.157 through 6.6.Not affected 6.12.109 through 6.12.Not affected 6.18.50 through 6.18.Not affected 7.2.4 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before e6e79e7be87c5ea92728060a3d7fb56890a91e45Affected
1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before 672ee1981db10569ec96030bddb322f18382ec04Affected
1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before 4681e731db07769846901cfabdd3e53f765eb9d3Affected
1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before 3265d558dfafab8f12f5fba06ebbf15cae9f3225Affected
1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before fe9c591026c576d8b1f72aab5e4cd67350530763Affected
1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before 85f438382a865a4dc4c50e6b884310bb2b60fc4dAffected
1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before 320e5258a53af0abc5abd9eb01519a48bab2dee8Affected
1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 to before a7100601aa1a39f799a566acce10db20eaf4b7f2Affected

LinuxLinux

4.15Affected
before 4.15Not affected
5.10.270 through 5.10.*Not affected
5.15.221 through 5.15.*Not affected
6.1.188 through 6.1.*Not affected
6.6.157 through 6.6.*Not affected
6.12.109 through 6.12.*Not affected
6.18.50 through 6.18.*Not affected
7.2.4 through 7.2.*Not affected
7.3 and laterNot affected

References

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