CVE-2026-90411

Description

In the Linux kernel, the following vulnerability has been resolved: nvme-fc: unmap cmd_iu DMA on rsp_iu mapping failure in init_request __nvme_fc_init_request() maps cmd_iu and then rsp_iu for DMA. If the rsp_iu mapping fails, the original code only recorded the error and fell through: it left the already-mapped cmd_iu unmapped and still marked the op as FCPOP_STATE_IDLE before returning. Since blk-mq does not call .exit_request() when .init_request() fails, the cmd_iu mapping is leaked for every op whose rsp_iu mapping fails. Jump to an error path on rsp_iu mapping failure that unmaps cmd_iu and returns the error without marking the op idle, so it stays in the FCPOP_STATE_UNINIT state set by the initial memset().

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EPSS — Exploit Prediction

0.0021

Probability of exploitation

0.11%

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/18c5781ed8bc2f423c26ec93e47e2057cd76a783 https://git.kernel.org/stable/c/5e820d04c241c81a47e1940349018690e93d8167 https://git.kernel.org/stable/c/acc173608ca7abe5dee8983086b44efd8b0dbc84 https://git.kernel.org/stable/c/bb0251991420c25e3ceeac40ea09250d79ed7ef0 https://git.kernel.org/stable/c/bd764baf82bb46e958a0bd0b481630dd71313055 https://git.kernel.org/stable/c/be5eb47ee3fea338efae1a5b678d6bb5f0fcc931 https://git.kernel.org/stable/c/c0892cfb60a75e2c86ba8e2127b133f6549c12b3 https://git.kernel.org/stable/c/f49d0c3a8d56a7cda1628ae17341a4a42063563c

Frequently Asked Questions

What is CVE-2026-90411? +

In the Linux kernel, the following vulnerability has been resolved: nvme-fc: unmap cmd_iu DMA on rsp_iu mapping failure in init_request __nvme_fc_init_request() maps cmd_iu and then rsp_iu for DMA. If the rsp_iu mapping fails, the original code only recorded the error and fell through: it left the already-mapped cmd_iu unmapped and still marked the op as FCPOP_STATE_IDLE before returning. Since blk-mq does not call .exit_request() when .init_request() fails, the cmd_iu mapping is leaked for every op whose rsp_iu mapping fails. Jump to an error path on rsp_iu mapping failure that unmaps cmd_iu and returns the error without marking the op idle, so it stays in the FCPOP_STATE_UNINIT state set by the initial memset().

How do I check if I'm vulnerable to CVE-2026-90411? +

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.