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CVE-2026-93103

Unknown

Last modified

CVE-2026-93103 is a vulnerability of currently unknown severity. 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..

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 03b92789e5cfdac66805c1a98f1ec67336199d56, < 852637d3ee56aed8ea3ee8948eda21eca406c051; >= 03b92789e5cfdac66805c1a98f1ec67336199d56, < 3d0e5252b8d0345ef494763ca31e3ddd666e02cb; >= 03b92789e5cfdac66805c1a98f1ec67336199d56, < 0feb29d434e6cc0ebefec4f77be014c85ad751b0; >= 03b92789e5cfdac66805c1a98f1ec67336199d56, < 3f1e196eb66b8cd3882e373794d6cea46f150a20; >= 03b92789e5cfdac66805c1a98f1ec67336199d56, < 4ff9d58d34758e9633078b37e8d5289b513ff80e; >= 03b92789e5cfdac66805c1a98f1ec67336199d56, < fd4d3ad5f244a867166d1e2da7ece3d82878ec81; >= 03b92789e5cfdac66805c1a98f1ec67336199d56, < 4204f5c0312ba136181a6e148ffa0bfaf95a4cc1; >= 03b92789e5cfdac66805c1a98f1ec67336199d56, < 2e3809ad8911f5d5581b3f046bd628417bface76
LinuxLinux5.2

References

Timeline

Published
Last Modified
Status
Received

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 severe is CVE-2026-93103?
Severity scoring for CVE-2026-93103 is pending analysis.
How do I fix CVE-2026-93103?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST