CVE-2025-21655Published

io_uring/eventfd: ensure io_eventfd_signal() defers another RCU period

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2025-21655

Published

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "io_uring/eventfd.c"
                    ],
                    "versions": [
                        {
                            "version": "21a091b970cdbcf3e8ff829234b51be6f9192766",
                            "lessThan": "6b63308c28987c6010b1180c72a6db4df6c68033",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "21a091b970cdbcf3e8ff829234b51be6f9192766",
                            "lessThan": "8efff2aa2d95dc437ab67c5b4a9f1d3f367baa10",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "21a091b970cdbcf3e8ff829234b51be6f9192766",
                            "lessThan": "a7085c3ae43b86d4b3d1b8275e6a67f14257e3b7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "21a091b970cdbcf3e8ff829234b51be6f9192766",
                            "lessThan": "c9a40292a44e78f71258b8522655bffaf5753bdb",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "io_uring/eventfd.c"
                    ],
                    "versions": [
                        {
                            "version": "6.1",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.1",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.125",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.72",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.10",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.13",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON