{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-31490",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-03-09T15:48:24.102Z",
        "datePublished": "2026-04-22T13:54:14.241Z",
        "dateUpdated": "2026-08-05T12:23:02.564Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T12:23:02.564Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/pf: Fix use-after-free in migration restore\n\nWhen an error is returned from xe_sriov_pf_migration_restore_produce(),\nthe data pointer is not set to NULL, which can trigger use-after-free\nin subsequent .write() calls.\nSet the pointer to NULL upon error to fix the problem.\n\n(cherry picked from commit 4f53d8c6d23527d734fe3531d08e15cb170a0819)"
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 7.8,
                        "baseSeverity": "HIGH"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:L - The vulnerable restore write path is reached through local kernel interfaces, primarily the Xe VFIO migration resume data fd and also PF debugfs migration_data, not by network packets.\nAC:L - An attacker with access to the migration write interface can deliberately write a malformed complete packet, get an error from restore production, and then issue a subsequent write against the stale pending pointer.\nPR:L - The debugfs path is root-only, but the same helper is exposed through xe-vfio-pci migration to a process with an assigned VFIO device fd, which is commonly delegated to an unprivileged VMM user.\nUI:N - No victim action is needed once the attacker can operate the local VFIO/debugfs migration interface; the attacker directly performs the state transition and writes restore data.\nS:U - The bug corrupts host kernel memory from a host kernel driver path, so the impact remains within the same kernel security authority.\nC:H - This is a kernel use-after-free on a packet object containing attacker-influenced header and buffer pointer state, which can plausibly be shaped into disclosure of kernel memory.\nI:H - The stale packet pointer is reused on later writes, including copy_from_user through fields from freed/reallocated memory, making arbitrary kernel memory corruption defensible.\nA:H - At minimum the dangling pointer can be triggered repeatedly to cause kernel oops, panic, or device/host instability."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/xe/xe_sriov_packet.c"
                    ],
                    "versions": [
                        {
                            "version": "1ed30397c0b92b97381dbd11362fdbbf93e046d2",
                            "lessThan": "e28552b4ddea5cb4725380dd08237831af835124",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1ed30397c0b92b97381dbd11362fdbbf93e046d2",
                            "lessThan": "87997b6c6516e049cbaf2fc6810b213d587a06b1",
                            "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/gpu/drm/xe/xe_sriov_packet.c"
                    ],
                    "versions": [
                        {
                            "version": "6.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.11",
                            "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": "6.19",
                                    "versionEndExcluding": "6.19.11"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.19",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/e28552b4ddea5cb4725380dd08237831af835124"
                },
                {
                    "url": "https://git.kernel.org/stable/c/87997b6c6516e049cbaf2fc6810b213d587a06b1"
                }
            ],
            "title": "drm/xe/pf: Fix use-after-free in migration restore",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}