{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-23056",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:37:45.951Z",
        "datePublished": "2026-02-04T16:07:34.787Z",
        "dateUpdated": "2026-05-11T21:59:08.964Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:59:08.964Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nuacce: implement mremap in uacce_vm_ops to return -EPERM\n\nThe current uacce_vm_ops does not support the mremap operation of\nvm_operations_struct. Implement .mremap to return -EPERM to remind\nusers.\n\nThe reason we need to explicitly disable mremap is that when the\ndriver does not implement .mremap, it uses the default mremap\nmethod. This could lead to a risk scenario:\n\nAn application might first mmap address p1, then mremap to p2,\nfollowed by munmap(p1), and finally munmap(p2). Since the default\nmremap copies the original vma's vm_private_data (i.e., q) to the\nnew vma, both munmap operations would trigger vma_close, causing\nq->qfr to be freed twice(qfr will be set to null here, so repeated\nrelease is ok)."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/misc/uacce/uacce.c"
                    ],
                    "versions": [
                        {
                            "version": "015d239ac0142ad0e26567fd890ef8d171f13709",
                            "lessThan": "78d99f062d42e3af2ca46bde1a8e46e0dfd372e3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "015d239ac0142ad0e26567fd890ef8d171f13709",
                            "lessThan": "ebfa85658a39b49ec3901ceea7535b73aa0429e6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "015d239ac0142ad0e26567fd890ef8d171f13709",
                            "lessThan": "75b29bdc935ff93b8e8bf6f6b4d8a4810b26e06f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "015d239ac0142ad0e26567fd890ef8d171f13709",
                            "lessThan": "4c042bc71474dbe417c268f4bfb8ec196f802f07",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "015d239ac0142ad0e26567fd890ef8d171f13709",
                            "lessThan": "a407ddd61b3e6afc5ccfcd1478797171cf5686ee",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "015d239ac0142ad0e26567fd890ef8d171f13709",
                            "lessThan": "ba29b59d124e725e0377f09b2044909c91d657a1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "015d239ac0142ad0e26567fd890ef8d171f13709",
                            "lessThan": "02695347be532b628f22488300d40c4eba48b9b7",
                            "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/misc/uacce/uacce.c"
                    ],
                    "versions": [
                        {
                            "version": "5.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.249",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.199",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.162",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.122",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.68",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.8",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19",
                            "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": "5.7",
                                    "versionEndExcluding": "5.10.249"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "5.15.199"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.1.162"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.6.122"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.12.68"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.18.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.19"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/78d99f062d42e3af2ca46bde1a8e46e0dfd372e3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ebfa85658a39b49ec3901ceea7535b73aa0429e6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/75b29bdc935ff93b8e8bf6f6b4d8a4810b26e06f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4c042bc71474dbe417c268f4bfb8ec196f802f07"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a407ddd61b3e6afc5ccfcd1478797171cf5686ee"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ba29b59d124e725e0377f09b2044909c91d657a1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/02695347be532b628f22488300d40c4eba48b9b7"
                }
            ],
            "title": "uacce: implement mremap in uacce_vm_ops to return -EPERM",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}