CVE-2026-100075 RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters

What is CVE-2026-100075?

CVE-2026-100075 is a critical vulnerability in Linux kernel, published on 25 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Which versions are affected by CVE-2026-100075?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-100075?

Apply the vendor's patch.

Is CVE-2026-100075 being exploited?

There is no known exploitation of CVE-2026-100075 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-100075, DEBIAN-CVE-2026-100075, GHSA-6wcw-wcgc-6j9r, UBUNTU-CVE-2026-100075.