{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80791",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.793Z",
        "datePublished": "2026-09-04T15:13:03.204Z",
        "dateUpdated": "2026-10-19T08:43:44.536Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:43:44.536Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-auth: zero the AUTH_RECEIVE response buffer\n\nnvmet_execute_auth_receive() allocates the response buffer with kmalloc()\nsized by the host-supplied AUTH_RECEIVE allocation length, but the\nDH-HMAC-CHAP builders write only a fixed-size message into it. The full\nallocation length is then copied to the wire by nvmet_copy_to_sgl(), so a\nremote initiator receives the bytes past the built message -- up to nearly\na page of uninitialized slab -- during the pre-authentication handshake.\n\nAllocate the buffer with kzalloc() so the unwritten tail is zeroed before\nit is sent; conforming responses are unaffected."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/nvme/target/fabrics-cmd-auth.c"
                    ],
                    "versions": [
                        {
                            "version": "db1312dd95488b5e6ff362ff66fcf953a46b1821",
                            "lessThan": "447b668faa14710f611e714031e3739ac3ec3a4f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "db1312dd95488b5e6ff362ff66fcf953a46b1821",
                            "lessThan": "8f6363c8d54dde95982f0ab45e77cf57ec0efd62",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "db1312dd95488b5e6ff362ff66fcf953a46b1821",
                            "lessThan": "dfcf013f77709ebdb282767edc2795a37cab5b57",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "db1312dd95488b5e6ff362ff66fcf953a46b1821",
                            "lessThan": "b26189d28442183a8b5edb754f4a6918f77ca84e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "db1312dd95488b5e6ff362ff66fcf953a46b1821",
                            "lessThan": "2dcc9226203da7275a9c29d20007da278d73d5e9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "db1312dd95488b5e6ff362ff66fcf953a46b1821",
                            "lessThan": "1d6837d98bf966a041af65de5f78de7409ff83bc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "db1312dd95488b5e6ff362ff66fcf953a46b1821",
                            "lessThan": "3ddcfb013322aa37eaa7a0d344b73079c38dfa21",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/nvme/target/fabrics-cmd-auth.c"
                    ],
                    "versions": [
                        {
                            "version": "6.0",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.185",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.154",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.106",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.47",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.11",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.1",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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": "6.0",
                                    "versionEndExcluding": "6.1.185"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.6.154"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.12.106"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "6.18.47"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "7.1.11"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "7.2.1"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.0",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/447b668faa14710f611e714031e3739ac3ec3a4f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8f6363c8d54dde95982f0ab45e77cf57ec0efd62"
                },
                {
                    "url": "https://git.kernel.org/stable/c/dfcf013f77709ebdb282767edc2795a37cab5b57"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b26189d28442183a8b5edb754f4a6918f77ca84e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2dcc9226203da7275a9c29d20007da278d73d5e9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1d6837d98bf966a041af65de5f78de7409ff83bc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3ddcfb013322aa37eaa7a0d344b73079c38dfa21"
                }
            ],
            "title": "nvmet-auth: zero the AUTH_RECEIVE response buffer",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}