CVE-2026-93103

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/hfi1: Preserve unit 0 on allocation failure hfi1_free_devdata() assumes that the device was inserted into the unit table and unconditionally erases dd->unit. If xa_alloc_irq() fails, the zero-initialized unit remains zero, so full cleanup can remove an unrelated device from index 0. Release only the rdmavt allocation and return immediately while the unit table has not acquired the device.

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EPSS — Exploit Prediction

0.0018

Probability of exploitation

0.07%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/0feb29d434e6cc0ebefec4f77be014c85ad751b0 https://git.kernel.org/stable/c/2e3809ad8911f5d5581b3f046bd628417bface76 https://git.kernel.org/stable/c/3d0e5252b8d0345ef494763ca31e3ddd666e02cb https://git.kernel.org/stable/c/3f1e196eb66b8cd3882e373794d6cea46f150a20 https://git.kernel.org/stable/c/4204f5c0312ba136181a6e148ffa0bfaf95a4cc1 https://git.kernel.org/stable/c/4ff9d58d34758e9633078b37e8d5289b513ff80e https://git.kernel.org/stable/c/852637d3ee56aed8ea3ee8948eda21eca406c051 https://git.kernel.org/stable/c/fd4d3ad5f244a867166d1e2da7ece3d82878ec81

Frequently Asked Questions

What is CVE-2026-93103? +

In the Linux kernel, the following vulnerability has been resolved: RDMA/hfi1: Preserve unit 0 on allocation failure hfi1_free_devdata() assumes that the device was inserted into the unit table and unconditionally erases dd->unit. If xa_alloc_irq() fails, the zero-initialized unit remains zero, so full cleanup can remove an unrelated device from index 0. Release only the rdmavt allocation and return immediately while the unit table has not acquired the device.

How do I check if I'm vulnerable to CVE-2026-93103? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.