CVE-2026-100075 (CVSS 9.8)

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.

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CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0042

Probability of exploitation

0.35%

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/717ab4d0614e9446bf8e2de6229464499e4008d6 https://git.kernel.org/stable/c/af00051dbc9f467d4840ec709680660a3f8990fa https://git.kernel.org/stable/c/af073bd245180393bcb15d33d3990a6bdc32593a https://git.kernel.org/stable/c/b38f98e176050850f41bb6415f3a71400056623e https://git.kernel.org/stable/c/bd02d644bd19a2795c018635d273d91e45d2bb95 https://git.kernel.org/stable/c/be1478849e1abb1e12dc12e14cdbf800cc6fa99a https://git.kernel.org/stable/c/f1f2252da52cdda912da9993f39f58783b01b38f https://git.kernel.org/stable/c/f65f45dfa1e6e2eaa9e11c8b8ce8857799cb189d

Frequently Asked Questions

What is CVE-2026-100075? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-100075? +

CVE-2026-100075 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0042, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-100075? +

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.

CVE-2026-100075