{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90313",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.801Z",
        "datePublished": "2026-09-17T16:08:32.932Z",
        "dateUpdated": "2026-10-19T09:01:29.794Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:01:29.794Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, cgroup: Fix invalid storage access after __cgroup_bpf_attach failed\n\nA potential invalid storage access issue can occur after replacing a\ncgroup bpf prog.\n\nThis occurs in the following scenario:\n1. prog1 with storage is attached to a cgroup in multi-attach mode.\n2. prog1 is replaced with prog2 using BPF_F_REPLACE in multi-attach\n   mode, but fails midway (e.g. in bpf_trampoline_link_cgroup_shim or\n   update_effective_progs).\n3. A new prog3 is attached to the cgroup in multi-attach mode.\n\nThe reason is that __cgroup_bpf_attach overwrites pl->storage with the\nnew storage prior to attachment completion. When attachment fails\nmidway, the cleanup path calls bpf_cgroup_storages_free(new_storage) to\nfree the newly allocated storage, but fails to restore pl->storage back\nto old_storage.\n\nConsequently, the still-active prog1 holds invalid or dangling storage\npointers, leading to an invalid memory access when prog1 executes and\ncalls bpf_get_local_storage. Additionally, original pl->flags and\ncgrp->bpf.flags[atype] are left unrestored.\n\nFix this by saving old_pl_flags, old_storage, and old_flags prior to the\nupdate, and properly restoring all of them in the cleanup path on error."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/bpf/cgroup.c"
                    ],
                    "versions": [
                        {
                            "version": "7d9c3427894fe70d1347b4820476bf37736d2ff0",
                            "lessThan": "e26db0d636e4c24a6b16683ea95cf5077c64d74b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7d9c3427894fe70d1347b4820476bf37736d2ff0",
                            "lessThan": "aaca16e042527f7efe48b50799bc662f1a191ce1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7d9c3427894fe70d1347b4820476bf37736d2ff0",
                            "lessThan": "86ead176301109b78e1d14c0e9d0d9ff9723c769",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7d9c3427894fe70d1347b4820476bf37736d2ff0",
                            "lessThan": "2c2218560b6e28a63ff7834ba26d09ff8efdee39",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7d9c3427894fe70d1347b4820476bf37736d2ff0",
                            "lessThan": "6655c409707ec8ce9ce0850ffe4fe02331fd4d9c",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/bpf/cgroup.c"
                    ],
                    "versions": [
                        {
                            "version": "5.9",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.9",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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": "5.9",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.9",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/e26db0d636e4c24a6b16683ea95cf5077c64d74b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/aaca16e042527f7efe48b50799bc662f1a191ce1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/86ead176301109b78e1d14c0e9d0d9ff9723c769"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2c2218560b6e28a63ff7834ba26d09ff8efdee39"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6655c409707ec8ce9ce0850ffe4fe02331fd4d9c"
                }
            ],
            "title": "bpf, cgroup: Fix invalid storage access after __cgroup_bpf_attach failed",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}