CVE-2026-90411
nvme-fc: unmap cmd_iu DMA on rsp_iu mapping failure in init_request
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().
INFO
Published Date :
Sept. 17, 2026, 5:17 p.m.
Last Modified :
Sept. 17, 2026, 5:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the nvme-fc driver patch for kernel versions.
- Ensure cmd_iu is unmapped on rsp_iu mapping failure.
- Properly handle error paths in nvme-fc request initialization.
- Update the Linux kernel to the patched version.
References to Advisories, Solutions, and Tools
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CVE-2026-90411.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
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associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
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stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-90411
weaknesses.
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Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 17, 2026
Action Type Old Value New Value Added 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(). Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/90xxx/CVE-2026-90411.json">CVE-2026-90411</a> Added Reference https://git.kernel.org/stable/c/18c5781ed8bc2f423c26ec93e47e2057cd76a783 Added Reference https://git.kernel.org/stable/c/5e820d04c241c81a47e1940349018690e93d8167 Added Reference https://git.kernel.org/stable/c/acc173608ca7abe5dee8983086b44efd8b0dbc84 Added Reference https://git.kernel.org/stable/c/bb0251991420c25e3ceeac40ea09250d79ed7ef0 Added Reference https://git.kernel.org/stable/c/bd764baf82bb46e958a0bd0b481630dd71313055 Added Reference https://git.kernel.org/stable/c/be5eb47ee3fea338efae1a5b678d6bb5f0fcc931 Added Reference https://git.kernel.org/stable/c/c0892cfb60a75e2c86ba8e2127b133f6549c12b3 Added Reference https://git.kernel.org/stable/c/f49d0c3a8d56a7cda1628ae17341a4a42063563c