CVE-2026-89510
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.
How to fix
- Linux Linuxe6e79e7be87c5ea92728060a3d7fb56890a91e45, 672ee1981db10569ec96030bddb322f18382ec04, 4681e731db07769846901cfabdd3e53f765eb9d3, 3265d558dfafab8f12f5fba06ebbf15cae9f3225, fe9c591026c576d8b1f72aab5e4cd67350530763, 85f438382a865a4dc4c50e6b884310bb2b60fc4d, 320e5258a53af0abc5abd9eb01519a48bab2dee8, a7100601aa1a39f799a566acce10db20eaf4b7f2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 ≤ v < e6e79e7be87c5ea92728060a3d7fb56890a91e45, 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 ≤ v < 672ee1981db10569ec96030bddb322f18382ec04, 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 ≤ v < 4681e731db07769846901cfabdd3e53f765eb9d3, 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 ≤ v < 3265d558dfafab8f12f5fba06ebbf15cae9f3225, 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 ≤ v < fe9c591026c576d8b1f72aab5e4cd67350530763, 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 ≤ v < 85f438382a865a4dc4c50e6b884310bb2b60fc4d, 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 ≤ v < 320e5258a53af0abc5abd9eb01519a48bab2dee8, 1c8f1da5d851b92aeb81dbbb9ebd516f6e2588f5 ≤ v < a7100601aa1a39f799a566acce10db20eaf4b7f2, 4.15 | e6e79e7be87c5ea92728060a3d7fb56890a91e45, 672ee1981db10569ec96030bddb322f18382ec04, 4681e731db07769846901cfabdd3e53f765eb9d3, 3265d558dfafab8f12f5fba06ebbf15cae9f3225, fe9c591026c576d8b1f72aab5e4cd67350530763, 85f438382a865a4dc4c50e6b884310bb2b60fc4d, 320e5258a53af0abc5abd9eb01519a48bab2dee8, a7100601aa1a39f799a566acce10db20eaf4b7f2 |
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