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smb: client: harden POSIX SID length parsing

cve-program · CVE-2026-64380

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": [
                        "fs/smb/client/smb2pdu.c"
                    ],
                    "versions": [
                        {
                            "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
                            "lessThan": "171605aed68380c2fa75dff9b3a1ed427c50065b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
                            "lessThan": "4213c1208978483021d7d125c131de3985d38f61",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
                            "lessThan": "96e889bc1e759c83f25093e8c2f3da31b4973f30",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
                            "lessThan": "0de5b8e76847f5de26f364a82c6602c4881c30da",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
                            "lessThan": "427eb7eb46425fec845a43e861f3d6e2899cae59",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
                            "lessThan": "86c5d470f5d42e61123b2f4b4f0b91f4eee5b980",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
                            "lessThan": "46a84715a015cb48e1b9c219dc88c03d8a541ea4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
                            "lessThan": "7ad2bcf2441430bb2e918fb3ef9a90d775a6e422",
                            "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": [
                        "fs/smb/client/smb2pdu.c"
                    ],
                    "versions": [
                        {
                            "version": "5.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.261",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.212",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.178",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.96",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.39",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.4",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }

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

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Sources read 8 Nov 17:53 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current