cvelist/2024/26xxx/CVE-2024-26689.json

{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-26689",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nceph: prevent use-after-free in encode_cap_msg()\n\nIn fs/ceph/caps.c, in encode_cap_msg(), \"use after free\" error was\ncaught by KASAN at this line - 'ceph_buffer_get(arg->xattr_buf);'. This\nimplies before the refcount could be increment here, it was freed.\n\nIn same file, in \"handle_cap_grant()\" refcount is decremented by this\nline - 'ceph_buffer_put(ci->i_xattrs.blob);'. It appears that a race\noccurred and resource was freed by the latter line before the former\nline could increment it.\n\nencode_cap_msg() is called by __send_cap() and __send_cap() is called by\nceph_check_caps() after calling __prep_cap(). __prep_cap() is where\narg->xattr_buf is assigned to ci->i_xattrs.blob. This is the spot where\nthe refcount must be increased to prevent \"use after free\" error."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "1da177e4c3f4",
                                            "version_value": "8180d0c27b93"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.10.210",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.15.149",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.1.79",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.6.18",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.7.6",
                                                        "lessThanOrEqual": "6.7.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.8",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/8180d0c27b93a6eb60da1b08ea079e3926328214",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/8180d0c27b93a6eb60da1b08ea079e3926328214"
            },
            {
                "url": "https://git.kernel.org/stable/c/70e329b440762390258a6fe8c0de93c9fdd56c77",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/70e329b440762390258a6fe8c0de93c9fdd56c77"
            },
            {
                "url": "https://git.kernel.org/stable/c/f3f98d7d84b31828004545e29fd7262b9f444139",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/f3f98d7d84b31828004545e29fd7262b9f444139"
            },
            {
                "url": "https://git.kernel.org/stable/c/ae20db45e482303a20e56f2db667a9d9c54ac7e7",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/ae20db45e482303a20e56f2db667a9d9c54ac7e7"
            },
            {
                "url": "https://git.kernel.org/stable/c/7958c1bf5b03c6f1f58e724dbdec93f8f60b96fc",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/7958c1bf5b03c6f1f58e724dbdec93f8f60b96fc"
            },
            {
                "url": "https://git.kernel.org/stable/c/cda4672da1c26835dcbd7aec2bfed954eda9b5ef",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/cda4672da1c26835dcbd7aec2bfed954eda9b5ef"
            }
        ]
    },
    "generator": {
        "engine": "bippy-9e1c9544281a"
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