{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2024-49980",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-10-21T12:17:06.052Z",
        "datePublished": "2024-10-21T18:02:26.494Z",
        "dateUpdated": "2024-10-22T13:38:44.524Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2024-10-21T18:02:26.494Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvrf: revert \"vrf: Remove unnecessary RCU-bh critical section\"\n\nThis reverts commit 504fc6f4f7f681d2a03aa5f68aad549d90eab853.\n\ndev_queue_xmit_nit is expected to be called with BH disabled.\n__dev_queue_xmit has the following:\n\n        /* Disable soft irqs for various locks below. Also\n         * stops preemption for RCU.\n         */\n        rcu_read_lock_bh();\n\nVRF must follow this invariant. The referenced commit removed this\nprotection. Which triggered a lockdep warning:\n\n\t================================\n\tWARNING: inconsistent lock state\n\t6.11.0 #1 Tainted: G        W\n\t--------------------------------\n\tinconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.\n\tbtserver/134819 [HC0[0]:SC0[0]:HE1:SE1] takes:\n\tffff8882da30c118 (rlock-AF_PACKET){+.?.}-{2:2}, at: tpacket_rcv+0x863/0x3b30\n\t{IN-SOFTIRQ-W} state was registered at:\n\t  lock_acquire+0x19a/0x4f0\n\t  _raw_spin_lock+0x27/0x40\n\t  packet_rcv+0xa33/0x1320\n\t  __netif_receive_skb_core.constprop.0+0xcb0/0x3a90\n\t  __netif_receive_skb_list_core+0x2c9/0x890\n\t  netif_receive_skb_list_internal+0x610/0xcc0\n          [...]\n\n\tother info that might help us debug this:\n\t Possible unsafe locking scenario:\n\n\t       CPU0\n\t       ----\n\t  lock(rlock-AF_PACKET);\n\t  <Interrupt>\n\t    lock(rlock-AF_PACKET);\n\n\t *** DEADLOCK ***\n\n\tCall Trace:\n\t <TASK>\n\t dump_stack_lvl+0x73/0xa0\n\t mark_lock+0x102e/0x16b0\n\t __lock_acquire+0x9ae/0x6170\n\t lock_acquire+0x19a/0x4f0\n\t _raw_spin_lock+0x27/0x40\n\t tpacket_rcv+0x863/0x3b30\n\t dev_queue_xmit_nit+0x709/0xa40\n\t vrf_finish_direct+0x26e/0x340 [vrf]\n\t vrf_l3_out+0x5f4/0xe80 [vrf]\n\t __ip_local_out+0x51e/0x7a0\n          [...]"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/vrf.c"
                    ],
                    "versions": [
                        {
                            "version": "504fc6f4f7f6",
                            "lessThan": "718a752bd746",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "504fc6f4f7f6",
                            "lessThan": "8c9381b31382",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "504fc6f4f7f6",
                            "lessThan": "e61f8c4d179b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "504fc6f4f7f6",
                            "lessThan": "b04c4d9eb4f2",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/vrf.c"
                    ],
                    "versions": [
                        {
                            "version": "6.6",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.6",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.6.55",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.10.14",
                            "lessThanOrEqual": "6.10.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.11.3",
                            "lessThanOrEqual": "6.11.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.12-rc2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/718a752bd746b3f4dd62516bb437baf73d548415"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8c9381b3138246d46536db93ed696832abd70204"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e61f8c4d179b2ffc0d3b7f821c3734be738643d0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b04c4d9eb4f25b950b33218e33b04c94e7445e51"
                }
            ],
            "title": "vrf: revert \"vrf: Remove unnecessary RCU-bh critical section\"",
            "x_generator": {
                "engine": "bippy-c9c4e1df01b2"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2024-49980",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-10-22T13:32:37.764586Z"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-10-22T13:38:44.524Z"
                }
            }
        ]
    }
}