{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-53274",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-06-09T07:44:35.395Z",
        "datePublished": "2026-06-25T08:39:58.478Z",
        "dateUpdated": "2026-06-25T08:39:58.478Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-25T08:39:58.478Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix sleep-inside-lock in __smc_setsockopt() causing local DoS\n\nA logic flaw in __smc_setsockopt() allows a local unprivileged user to\ncause a Denial of Service (DoS) by holding the socket lock indefinitely.\n\nThe function __smc_setsockopt() calls copy_from_sockptr() while holding\nlock_sock(sk). By passing a userfaultfd-monitored memory page (or\nFUSE-backed memory on systems where unprivileged userfaultfd is disabled)\nas the optval, an attacker can halt execution during the copy operation,\nkeeping the lock held.\n\nCombined with asynchronous tear-down operations like shutdown(), this\nexhausts the kernel wq (kworkers) and triggers the hung task watchdog.\n\n[  240.123456] INFO: task kworker/u8:2 blocked for more than 120 seconds.\n[  240.123489] Call Trace:\n[  240.123501]  smc_shutdown+...\n[  240.123512]  lock_sock_nested+...\n\nThis patch moves the user-space copy outside the lock_sock() critical\nsection to prevent the issue."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/smc/af_smc.c"
                    ],
                    "versions": [
                        {
                            "version": "a6a6fe27bab48f0d09a64b051e7bde432fcae081",
                            "lessThan": "35a22117839602bb52283de08894c5a7dde92420",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a6a6fe27bab48f0d09a64b051e7bde432fcae081",
                            "lessThan": "5d27d2ffe487df89ce28fda0410eafa05dbe03a0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a6a6fe27bab48f0d09a64b051e7bde432fcae081",
                            "lessThan": "89f6fbe0033c942cb790ffd53ca93a45eeaf1c91",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a6a6fe27bab48f0d09a64b051e7bde432fcae081",
                            "lessThan": "dcd90f42a33e4220385f27b515183d0c91b2fc4a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a6a6fe27bab48f0d09a64b051e7bde432fcae081",
                            "lessThan": "94d286fa5eedc550d42bcb9c85416af8f77736ff",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a6a6fe27bab48f0d09a64b051e7bde432fcae081",
                            "lessThan": "a3fdd924d88c30b9f488636ce0e4696012cf5511",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/smc/af_smc.c"
                    ],
                    "versions": [
                        {
                            "version": "5.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.176",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.143",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.94",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.36",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.13",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "6.1.176"
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                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.18",
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/35a22117839602bb52283de08894c5a7dde92420"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5d27d2ffe487df89ce28fda0410eafa05dbe03a0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/89f6fbe0033c942cb790ffd53ca93a45eeaf1c91"
                },
                {
                    "url": "https://git.kernel.org/stable/c/dcd90f42a33e4220385f27b515183d0c91b2fc4a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/94d286fa5eedc550d42bcb9c85416af8f77736ff"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a3fdd924d88c30b9f488636ce0e4696012cf5511"
                }
            ],
            "title": "net/smc: fix sleep-inside-lock in __smc_setsockopt() causing local DoS",
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