{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-22110",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-12-29T08:45:45.820Z",
        "datePublished": "2025-04-16T14:12:57.061Z",
        "dateUpdated": "2026-08-05T11:56:50.656Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T11:56:50.656Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error\n\nIt is possible that ctx in nfqnl_build_packet_message() could be used\nbefore it is properly initialize, which is only initialized\nby nfqnl_get_sk_secctx().\n\nThis patch corrects this problem by initializing the lsmctx to a safe\nvalue when it is declared.\n\nThis is similar to the commit 35fcac7a7c25\n(\"audit: Initialize lsmctx to avoid memory allocation error\")."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 9.8,
                        "baseSeverity": "CRITICAL"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:N - The uninitialized `lsm_context` is consumed in `nfqnl_build_packet_message()`, which runs in the softirq packet-receive path for every packet hitting an NFQUEUE verdict (`nf_hook_slow` → `nf_queue` → `nfqnl_enqueue_packet`). On an internet-facing host running an inline NFQUEUE-based IPS (Suricata/Snort IPS mode), remote packets alone drive the vulnerable code.\nAC:L - The uninitialized-memory use is unconditional and deterministic — it fires on every queued packet with no crafting required — and the attacker can repeat it millions of times while shaping the underlying stack through the preceding IP/conntrack/netfilter processing of their own packets.\nPR:N - In the inline-IPS deployment the remote attacker needs no credentials whatsoever; merely sending traffic to the host executes the vulnerable code. Even in the purely local model, the `NFQUEUE` rule and nfnetlink queue socket are gated only by `netlink_net_capable(CAP_NET_ADMIN)`/`ns_capable()`, which any unprivileged user obtains via `unshare -Urn`.\nUI:N - No victim action is required — the flaw triggers automatically during kernel packet processing as soon as traffic traverses the NFQUEUE rule.\nS:U - The invalid free and resulting slab corruption occur entirely within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Uninitialized stack memory is interpreted as a pointer and length, and the resulting wild `kfree()` yields slab corruption that can be groomed into an arbitrary-read primitive, so treat as high per use-after-free/uninitialized-memory guidance.\nI:H - `selinux_release_secctx()`/`apparmor_release_secctx()` call `kfree()` on an attacker-influenceable stale stack value, giving an arbitrary-free primitive that corrupts the slab allocator and is a well-established route to arbitrary write and control-flow hijack.\nA:H - Freeing a bogus pointer triggers slab metadata corruption, `BUG_ON`/oops, or panic, and the path is reached on every queued packet so it can be driven repeatedly until the kernel dies."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/netfilter/nfnetlink_queue.c"
                    ],
                    "versions": [
                        {
                            "version": "2d470c778120d3cdb8d8ab250329ca85f49f12b1",
                            "lessThan": "ddbf7e1d82a1d0c1d3425931a6cb1b83f8454759",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2d470c778120d3cdb8d8ab250329ca85f49f12b1",
                            "lessThan": "778b09d91baafb13408470c721d034d6515cfa5a",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/netfilter/nfnetlink_queue.c"
                    ],
                    "versions": [
                        {
                            "version": "6.14",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.14",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.14.2",
                            "lessThanOrEqual": "6.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.15",
                            "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": "6.14",
                                    "versionEndExcluding": "6.14.2"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.14",
                                    "versionEndExcluding": "6.15"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ddbf7e1d82a1d0c1d3425931a6cb1b83f8454759"
                },
                {
                    "url": "https://git.kernel.org/stable/c/778b09d91baafb13408470c721d034d6515cfa5a"
                }
            ],
            "title": "netfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}