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CVE-2026-100075

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters When srpt_alloc_rw_ctxs() fails partway through a multi-buffer indirect des…

Published Sep 25, 2026linuxEPSS 0.43%

Overview

CVE-2026-100075 is a critical-severity vulnerability affecting linux linux_kernel. It was published on September 25, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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

RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters

When srpt_alloc_rw_ctxs() fails partway through a multi-buffer indirect

descriptor, the unwind path destroys RDMA contexts but leaves stale

n_rw_ctx and n_rdma values (and a dangling rw_ctxs pointer). Later

sq_wr_avail accounting in srpt_queue_response() or srpt_write_pending()

can then subtract the wrong number of send queue credits.

Reset the counters and clear rw_ctxs after freeing the heap

allocation before returning an error.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
linuxlinux_kernel>= 4.7, < 5.10.270Affected

References

Refgit.kernel.org/stable/c/717ab4d0614e9446bf8e2de6229464499e4008d6Refgit.kernel.org/stable/c/af00051dbc9f467d4840ec709680660a3f8990faRefgit.kernel.org/stable/c/af073bd245180393bcb15d33d3990a6bdc32593aRefgit.kernel.org/stable/c/b38f98e176050850f41bb6415f3a71400056623eRefgit.kernel.org/stable/c/bd02d644bd19a2795c018635d273d91e45d2bb95Refgit.kernel.org/stable/c/be1478849e1abb1e12dc12e14cdbf800cc6fa99aRefgit.kernel.org/stable/c/f1f2252da52cdda912da9993f39f58783b01b38fRefgit.kernel.org/stable/c/f65f45dfa1e6e2eaa9e11c8b8ce8857799cb189d

How CyberStrike helps

Frequently asked questions

What is CVE-2026-100075?

CVE-2026-100075 is a critical-severity vulnerability affecting linux linux_kernel. It was published on September 25, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-100075?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-100075?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-100075?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-100075 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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