{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-45870",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-13T15:03:33.081Z",
        "datePublished": "2026-05-27T12:15:50.199Z",
        "dateUpdated": "2026-05-27T12:15:50.199Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-27T12:15:50.199Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: auth_gss: fix memory leaks in XDR decoding error paths\n\nThe gssx_dec_ctx(), gssx_dec_status(), and gssx_dec_name()\nfunctions allocate memory via gssx_dec_buffer(), which calls\nkmemdup(). When a subsequent decode operation fails, these\nfunctions return immediately without freeing previously\nallocated buffers, causing memory leaks.\n\nThe leak in gssx_dec_ctx() is particularly relevant because\nthe caller (gssp_accept_sec_context_upcall) initializes several\nbuffer length fields to non-zero values, resulting in memory\nallocation:\n\n    struct gssx_ctx rctxh = {\n        .exported_context_token.len = GSSX_max_output_handle_sz,\n        .mech.len = GSS_OID_MAX_LEN,\n        .src_name.display_name.len = GSSX_max_princ_sz,\n        .targ_name.display_name.len = GSSX_max_princ_sz\n    };\n\nIf, for example, gssx_dec_name() succeeds for src_name but\nfails for targ_name, the memory allocated for\nexported_context_token, mech, and src_name.display_name\nremains unreferenced and cannot be reclaimed.\n\nAdd error handling with goto-based cleanup to free any\npreviously allocated buffers before returning an error."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/sunrpc/auth_gss/gss_rpc_xdr.c"
                    ],
                    "versions": [
                        {
                            "version": "1d658336b05f8697d6445834f8867f8ad5e4f735",
                            "lessThan": "c81431b1b9fbd21e9a5a9211b5517b7295d18e6a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1d658336b05f8697d6445834f8867f8ad5e4f735",
                            "lessThan": "caf7eff432e91a9eba1c79fa545c2f54be15d62b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1d658336b05f8697d6445834f8867f8ad5e4f735",
                            "lessThan": "64303b92d94c0c7845a273acd8d84b796d6f1db7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1d658336b05f8697d6445834f8867f8ad5e4f735",
                            "lessThan": "df10f23defff22c8d55fe6db74f6e4ce927145bf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1d658336b05f8697d6445834f8867f8ad5e4f735",
                            "lessThan": "b4af3806846778799cd4ab0766dc18341e777264",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1d658336b05f8697d6445834f8867f8ad5e4f735",
                            "lessThan": "d79b9097a6a2b91471b40755f1225364be5d85ff",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1d658336b05f8697d6445834f8867f8ad5e4f735",
                            "lessThan": "3b56eb90feb8a3709417f5624f3871847d42bcb1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1d658336b05f8697d6445834f8867f8ad5e4f735",
                            "lessThan": "3e6397b056335cc56ef0e9da36c95946a19f5118",
                            "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/sunrpc/auth_gss/gss_rpc_xdr.c"
                    ],
                    "versions": [
                        {
                            "version": "3.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.10",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.252",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.202",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.165",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.128",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.75",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.14",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.4",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.10",
                                    "versionEndExcluding": "5.10.252"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.10",
                                    "versionEndExcluding": "5.15.202"
                                },
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/c81431b1b9fbd21e9a5a9211b5517b7295d18e6a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/caf7eff432e91a9eba1c79fa545c2f54be15d62b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/64303b92d94c0c7845a273acd8d84b796d6f1db7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/df10f23defff22c8d55fe6db74f6e4ce927145bf"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b4af3806846778799cd4ab0766dc18341e777264"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d79b9097a6a2b91471b40755f1225364be5d85ff"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3b56eb90feb8a3709417f5624f3871847d42bcb1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3e6397b056335cc56ef0e9da36c95946a19f5118"
                }
            ],
            "title": "SUNRPC: auth_gss: fix memory leaks in XDR decoding error paths",
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}