{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-53189",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-09-15T13:59:19.066Z",
        "datePublished": "2025-09-15T14:05:26.685Z",
        "dateUpdated": "2026-08-04T09:13:41.359Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-04T09:13:41.359Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6/addrconf: fix a potential refcount underflow for idev\n\nNow in addrconf_mod_rs_timer(), reference idev depends on whether\nrs_timer is not pending. Then modify rs_timer timeout.\n\nThere is a time gap in [1], during which if the pending rs_timer\nbecomes not pending. It will miss to hold idev, but the rs_timer\nis activated. Thus rs_timer callback function addrconf_rs_timer()\nwill be executed and put idev later without holding idev. A refcount\nunderflow issue for idev can be caused by this.\n\n\tif (!timer_pending(&idev->rs_timer))\n\t\tin6_dev_hold(idev);\n\t\t  <--------------[1]\n\tmod_timer(&idev->rs_timer, jiffies + when);\n\nTo fix the issue, hold idev if mod_timer() return 0."
                }
            ],
            "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"
                    }
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ipv6/addrconf.c"
                    ],
                    "versions": [
                        {
                            "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
                            "lessThan": "c6395e32935d35e6f935e7caf1c2dac5a95943b4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
                            "lessThan": "df62fdcd004afa72ecbed0e862ebb983acd3aa57",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
                            "lessThan": "c7eeba47058532f6077d6a658e38b6698f6ae71a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
                            "lessThan": "2ad31ce40e8182860b631e37209e93e543790b7c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
                            "lessThan": "82abd1c37d3bf2a2658b34772c17a25a6f9cca42",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
                            "lessThan": "436b7cc7eae7851c184b671ed7a4a64c750b86f7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
                            "lessThan": "1f656e483eb4733d62f18dfb206a49b78f60f495",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
                            "lessThan": "06a0716949c22e2aefb648526580671197151acc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "973d5956f754cfc306f5e274d71503498f4b0324",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3.10.105",
                            "lessThan": "3.11",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ipv6/addrconf.c"
                    ],
                    "versions": [
                        {
                            "version": "3.11",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.11",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.322",
                            "lessThanOrEqual": "4.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.291",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.251",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.188",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.121",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.40",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.4.5",
                            "lessThanOrEqual": "6.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.5",
                            "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": "3.11",
                                    "versionEndExcluding": "4.14.322"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.11",
                                    "versionEndExcluding": "4.19.291"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.11",
                                    "versionEndExcluding": "5.4.251"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.11",
                                    "versionEndExcluding": "5.10.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.11",
                                    "versionEndExcluding": "5.15.121"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.11",
                                    "versionEndExcluding": "6.1.40"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.11",
                                    "versionEndExcluding": "6.4.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.11",
                                    "versionEndExcluding": "6.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.10.105"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/c6395e32935d35e6f935e7caf1c2dac5a95943b4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/df62fdcd004afa72ecbed0e862ebb983acd3aa57"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c7eeba47058532f6077d6a658e38b6698f6ae71a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2ad31ce40e8182860b631e37209e93e543790b7c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/82abd1c37d3bf2a2658b34772c17a25a6f9cca42"
                },
                {
                    "url": "https://git.kernel.org/stable/c/436b7cc7eae7851c184b671ed7a4a64c750b86f7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1f656e483eb4733d62f18dfb206a49b78f60f495"
                },
                {
                    "url": "https://git.kernel.org/stable/c/06a0716949c22e2aefb648526580671197151acc"
                }
            ],
            "title": "ipv6/addrconf: fix a potential refcount underflow for idev",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}