CVE-2023-54302: RDMA/irdma: Fix data race on CQP completion stats

Published Dec 30, 2025
·
Updated

In the Linux kernel, the following vulnerability has been resolved:

RDMA/irdma: Fix data race on CQP completion stats

CQP completion statistics is read lockesly in irdmawaitevent and irdmacheckcqpprogress while it can be updated in the completion thread irdmascccqgetcqeinfo on another CPU as KCSAN reports.

Make completion statistics an atomic variable to reflect coherent updates to it. This will also avoid load/store tearing logic bug potentially possible by compiler optimizations.

[77346.170861] BUG: KCSAN: data-race in irdmahandlecqpop [irdma] / irdmascccqgetcqeinfo [irdma]

[77346.171383] write to 0xffff8a3250b108e0 of 8 bytes by task 9544 on cpu 4: [77346.171483] irdmascccqgetcqeinfo+0x27a/0x370 [irdma] [77346.171658] irdmacqpcehandler+0x164/0x270 [irdma] [77346.171835] cqpcomplworker+0x1b/0x20 [irdma] [77346.172009] processonework+0x4d1/0xa40 [77346.172024] workerthread+0x319/0x700 [77346.172037] kthread+0x180/0x1b0 [77346.172054] retfromfork+0x22/0x30

[77346.172136] read to 0xffff8a3250b108e0 of 8 bytes by task 9838 on cpu 2: [77346.172234] irdmahandlecqpop+0xf4/0x4b0 [irdma] [77346.172413] irdmacqpaeqcmd+0x75/0xa0 [irdma] [77346.172592] irdmacreateaeq+0x390/0x45a [irdma] [77346.172769] irdmartinithw.cold+0x212/0x85d [irdma] [77346.172944] irdmaprobe+0x54f/0x620 [irdma] [77346.173122] auxiliarybusprobe+0x66/0xa0 [77346.173137] reallyprobe+0x140/0x540 [77346.173154] driverprobedevice+0xc7/0x220 [77346.173173] driverprobedevice+0x5f/0x140 [77346.173190] driverattach+0xf0/0x2c0 [77346.173208] busforeachdev+0xa8/0xf0 [77346.173225] driverattach+0x29/0x30 [77346.173240] busadddriver+0x29c/0x2f0 [77346.173255] driverregister+0x10f/0x1a0 [77346.173272] auxiliarydriverregister+0xbc/0x140 [77346.173287] irdmainitmodule+0x55/0x1000 [irdma] [77346.173460] dooneinitcall+0x7d/0x410 [77346.173475] doinitmodule+0x81/0x2c0 [77346.173491] loadmodule+0x1232/0x12c0 [77346.173506] dosysfinitmodule+0x101/0x180 [77346.173522] x64sysfinitmodule+0x3c/0x50 [77346.173538] dosyscall64+0x39/0x90 [77346.173553] entrySYSCALL64afterhwframe+0x63/0xcd

[77346.173634] value changed: 0x0000000000000094 -> 0x0000000000000095

Affected Software

120 affected componentsFixes available
linux_kernel
ubuntu/linux-hwe-edge*
ubuntu/linux-aws-5.0*
ubuntu/linux-aws-5.3*
ubuntu/linux-azure*
ubuntu/linux-azure-5.3*
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-5.3*
ubuntu/linux-gke-4.15*
ubuntu/linux-gke-5.4*
ubuntu/linux-gkeop-5.4*
ubuntu/linux-hwe*
ubuntu/linux-hwe-edge*
ubuntu/linux-oem*
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-aws-5.15<5.15.0-1049.54~20.04.1
5.15.0-1049.54~20.04.1
ubuntu/linux-azure-5.15<5.15.0-1051.59~20.04.1
5.15.0-1051.59~20.04.1
ubuntu/linux-gcp-5.15<5.15.0-1046.54~20.04.1
5.15.0-1046.54~20.04.1
ubuntu/linux-hwe-5.15<5.15.0-88.98~20.04.1
5.15.0-88.98~20.04.1
ubuntu/linux-ibm-5.15<5.15.0-1042.45~20.04.1
5.15.0-1042.45~20.04.1
ubuntu/linux-intel-iotg-5.15<5.15.0-1045.51~20.04.1
5.15.0-1045.51~20.04.1
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-88.98~20.04.1
5.15.0-88.98~20.04.1
ubuntu/linux-nvidia-tegra-5.15<5.15.0-1019.19~20.04.1
5.15.0-1019.19~20.04.1
ubuntu/linux-oracle-5.15<5.15.0-1047.53~20.04.1
5.15.0-1047.53~20.04.1
ubuntu/linux-riscv-5.15<5.15.0-1045.49~20.04.1
5.15.0-1045.49~20.04.1
ubuntu/linux-aws-5.11*
ubuntu/linux-aws-5.13*
ubuntu/linux-aws-5.8*
ubuntu/linux-azure-5.11*
ubuntu/linux-azure-5.13*
ubuntu/linux-azure-5.8*
ubuntu/linux-azure-fde*
ubuntu/linux-gcp-5.11*
ubuntu/linux-gcp-5.13*
ubuntu/linux-gcp-5.8*
ubuntu/linux-gke*
ubuntu/linux-gke-5.15*
ubuntu/linux-gkeop*
ubuntu/linux-gkeop-5.15*
ubuntu/linux-hwe-5.11*
ubuntu/linux-hwe-5.13*
ubuntu/linux-hwe-5.8*
ubuntu/linux-intel-5.13*
ubuntu/linux-oem-5.10*
ubuntu/linux-oem-5.13*
ubuntu/linux-oem-5.6*
ubuntu/linux-oracle-5.11*
ubuntu/linux-oracle-5.13*
ubuntu/linux-oracle-5.8*
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.11*
ubuntu/linux-riscv-5.8*
ubuntu/linux<5.15.0-88.98
5.15.0-88.98
ubuntu/linux-allwinner-5.19*
ubuntu/linux-aws<5.15.0-1049.54
5.15.0-1049.54
ubuntu/linux-aws-5.19*
ubuntu/linux-aws-6.2*
ubuntu/linux-aws-6.5*
ubuntu/linux-azure<5.15.0-1051.59
5.15.0-1051.59
ubuntu/linux-azure-5.19*
ubuntu/linux-azure-6.2*
ubuntu/linux-azure-6.5*
ubuntu/linux-azure-fde<5.15.0-1051.59.1
5.15.0-1051.59.1
ubuntu/linux-azure-fde-5.19*
ubuntu/linux-azure-fde-6.2*
ubuntu/linux-gcp<5.15.0-1046.54
5.15.0-1046.54
ubuntu/linux-gcp-5.19*
ubuntu/linux-gcp-6.2*
ubuntu/linux-gcp-6.5*
ubuntu/linux-gke<5.15.0-1046.51
5.15.0-1046.51
ubuntu/linux-gkeop<5.15.0-1032.38
5.15.0-1032.38
ubuntu/linux-hwe-5.19*
ubuntu/linux-hwe-6.2*
ubuntu/linux-hwe-6.5*
ubuntu/linux-ibm<5.15.0-1042.45
5.15.0-1042.45
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-intel-iotg<5.15.0-1045.51
5.15.0-1045.51
ubuntu/linux-kvm<5.15.0-1046.51
5.15.0-1046.51
ubuntu/linux-lowlatency<5.15.0-88.98
5.15.0-88.98
ubuntu/linux-lowlatency-hwe-5.19*
ubuntu/linux-lowlatency-hwe-6.2*
ubuntu/linux-lowlatency-hwe-6.5*
ubuntu/linux-nvidia<5.15.0-1040.40
5.15.0-1040.40
ubuntu/linux-nvidia-6.2*
ubuntu/linux-nvidia-6.5*
ubuntu/linux-nvidia-tegra<5.15.0-1019.19
5.15.0-1019.19
ubuntu/linux-nvidia-tegra-igx<5.15.0-1006.6
5.15.0-1006.6
ubuntu/linux-oem-5.17*
ubuntu/linux-oem-6.0*
ubuntu/linux-oem-6.1*
ubuntu/linux-oem-6.5*
ubuntu/linux-oracle<5.15.0-1047.53
5.15.0-1047.53
ubuntu/linux-oracle-6.5*
ubuntu/linux-raspi<5.15.0-1042.45
5.15.0-1042.45
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.19*
ubuntu/linux-riscv-6.5*
ubuntu/linux-starfive-5.19*
ubuntu/linux-starfive-6.2*
ubuntu/linux-starfive-6.5*
ubuntu/linux-xilinx-zynqmp<5.15.0-1025.29
5.15.0-1025.29
ubuntu/linux-bluefield<5.15.0-1031.33
5.15.0-1031.33
ubuntu/linux-intel-iot-realtime<5.15.0-1042.44
5.15.0-1042.44
ubuntu/linux-realtime<5.15.0-1050.56
5.15.0-1050.56
ubuntu/linux-fips*
ubuntu/linux-azure-6.11*
ubuntu/linux-gcp-6.11*
ubuntu/linux-hwe-6.11*
ubuntu/linux-lowlatency-hwe-6.11*
ubuntu/linux-nvidia-6.11*
ubuntu/linux-oem-6.11*
ubuntu/linux-oem-6.8*
ubuntu/linux-raspi-realtime*
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-6.14*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1049.54~20.04.1
  2. Upgrade

    Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1051.59~20.04.1
  3. Upgrade

    Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1046.54~20.04.1
  4. Upgrade

    Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-88.98~20.04.1
  5. Upgrade

    Upgrade ubuntu/linux-ibm-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1042.45~20.04.1
  6. Upgrade

    Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1045.51~20.04.1
  7. Upgrade

    Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-88.98~20.04.1
  8. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1019.19~20.04.1
  9. Upgrade

    Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1047.53~20.04.1
  10. Upgrade

    Upgrade ubuntu/linux-riscv-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1045.49~20.04.1
  11. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 5.15.0-88.98
  12. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 5.15.0-1049.54
  13. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 5.15.0-1051.59
  14. Upgrade

    Upgrade ubuntu/linux-azure-fde to a version that resolves this vulnerability.

    Fixed in 5.15.0-1051.59.1
  15. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 5.15.0-1046.54
  16. Upgrade

    Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.

    Fixed in 5.15.0-1046.51
  17. Upgrade

    Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.

    Fixed in 5.15.0-1032.38
  18. Upgrade

    Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.

    Fixed in 5.15.0-1042.45
  19. Upgrade

    Upgrade ubuntu/linux-intel-iotg to a version that resolves this vulnerability.

    Fixed in 5.15.0-1045.51
  20. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 5.15.0-1046.51
  21. Upgrade

    Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.15.0-88.98
  22. Upgrade

    Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.

    Fixed in 5.15.0-1040.40
  23. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra to a version that resolves this vulnerability.

    Fixed in 5.15.0-1019.19
  24. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra-igx to a version that resolves this vulnerability.

    Fixed in 5.15.0-1006.6
  25. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 5.15.0-1047.53
  26. Upgrade

    Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.

    Fixed in 5.15.0-1042.45
  27. Upgrade

    Upgrade ubuntu/linux-xilinx-zynqmp to a version that resolves this vulnerability.

    Fixed in 5.15.0-1025.29
  28. Upgrade

    Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.

    Fixed in 5.15.0-1031.33
  29. Upgrade

    Upgrade ubuntu/linux-intel-iot-realtime to a version that resolves this vulnerability.

    Fixed in 5.15.0-1042.44
  30. Upgrade

    Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.

    Fixed in 5.15.0-1050.56
  31. Compensating control

    Modify the Linux RDMA/irdma driver so that CQP completion statistics are stored and accessed as an atomic variable, ensuring coherent updates between irdma_wait_event, irdma_check_cqp_progress, and irdma_sc_ccq_get_cqe_info.

Event History

Dec 30, 2025
CVE Published
via MITRE·12:23 PM
Data Sourced
via MITRE·12:23 PM
Description
Data Sourced
via OSV·01:16 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·01:16 PM
Description

Frequently Asked Questions

1

What is the severity of CVE-2023-54302?

CVE-2023-54302 is categorized as a medium severity vulnerability in the Linux kernel.

2

How do I fix CVE-2023-54302?

To fix CVE-2023-54302, you should update your Linux kernel to the latest patched version that addresses this vulnerability.

3

What systems are affected by CVE-2023-54302?

CVE-2023-54302 affects versions of the Linux kernel that utilize the RDMA/irdma subsystem.

4

What are the potential impacts of CVE-2023-54302?

The potential impacts of CVE-2023-54302 could lead to data inconsistency in completion statistics, which may affect application performance.

5

Is CVE-2023-54302 a local or remote vulnerability?

CVE-2023-54302 is considered a local vulnerability, requiring access to the affected system to exploit.

Company

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