{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-23326",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:37:45.996Z",
        "datePublished": "2026-03-25T10:27:19.021Z",
        "dateUpdated": "2026-05-11T22:04:42.016Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:04:42.016Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: Fix fragment node deletion to prevent buffer leak\n\nAfter commit b692bf9a7543 (\"xsk: Get rid of xdp_buff_xsk::xskb_list_node\"),\nthe list_node field is reused for both the xskb pool list and the buffer\nfree list, this causes a buffer leak as described below.\n\nxp_free() checks if a buffer is already on the free list using\nlist_empty(&xskb->list_node). When list_del() is used to remove a node\nfrom the xskb pool list, it doesn't reinitialize the node pointers.\nThis means list_empty() will return false even after the node has been\nremoved, causing xp_free() to incorrectly skip adding the buffer to the\nfree list.\n\nFix this by using list_del_init() instead of list_del() in all fragment\nhandling paths, this ensures the list node is reinitialized after removal,\nallowing the list_empty() to work correctly."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/net/xdp_sock_drv.h",
                        "net/xdp/xsk.c"
                    ],
                    "versions": [
                        {
                            "version": "560c974b7ccd95bb9ff20df77f6654283e45c9c6",
                            "lessThan": "5172adf9efb8298a52f4dcdc3f98d4d9d1e06a6d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fd5614763805d6f386bd07cc53558f88b1b1eb62",
                            "lessThan": "2a9ea988465ece5b6896b1bdc144170a64e84c35",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b692bf9a7543af7ad11a59d182a3757578f0ba53",
                            "lessThan": "645c6d8376ad4913cbffe0e0c2cca0c4febbe596",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b692bf9a7543af7ad11a59d182a3757578f0ba53",
                            "lessThan": "b38cbd4af5034635cff109e08788c63f956f3a69",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b692bf9a7543af7ad11a59d182a3757578f0ba53",
                            "lessThan": "60abb0ac11dccd6b98fd9182bc5f85b621688861",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/net/xdp_sock_drv.h",
                        "net/xdp/xsk.c"
                    ],
                    "versions": [
                        {
                            "version": "6.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.17",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.7",
                            "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": "6.13",
                                    "versionEndExcluding": "6.18.17"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.13",
                                    "versionEndExcluding": "6.19.7"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.13",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/5172adf9efb8298a52f4dcdc3f98d4d9d1e06a6d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2a9ea988465ece5b6896b1bdc144170a64e84c35"
                },
                {
                    "url": "https://git.kernel.org/stable/c/645c6d8376ad4913cbffe0e0c2cca0c4febbe596"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b38cbd4af5034635cff109e08788c63f956f3a69"
                },
                {
                    "url": "https://git.kernel.org/stable/c/60abb0ac11dccd6b98fd9182bc5f85b621688861"
                }
            ],
            "title": "xsk: Fix fragment node deletion to prevent buffer leak",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}