{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2022-48969",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-08-22T01:27:53.629Z",
        "datePublished": "2024-10-21T20:05:51.051Z",
        "dateUpdated": "2024-10-22T13:28:38.112Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2024-10-21T20:05:51.051Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen-netfront: Fix NULL sring after live migration\n\nA NAPI is setup for each network sring to poll data to kernel\nThe sring with source host is destroyed before live migration and\nnew sring with target host is setup after live migration.\nThe NAPI for the old sring is not deleted until setup new sring\nwith target host after migration. With busy_poll/busy_read enabled,\nthe NAPI can be polled before got deleted when resume VM.\n\nBUG: unable to handle kernel NULL pointer dereference at\n0000000000000008\nIP: xennet_poll+0xae/0xd20\nPGD 0 P4D 0\nOops: 0000 [#1] SMP PTI\nCall Trace:\n finish_task_switch+0x71/0x230\n timerqueue_del+0x1d/0x40\n hrtimer_try_to_cancel+0xb5/0x110\n xennet_alloc_rx_buffers+0x2a0/0x2a0\n napi_busy_loop+0xdb/0x270\n sock_poll+0x87/0x90\n do_sys_poll+0x26f/0x580\n tracing_map_insert+0x1d4/0x2f0\n event_hist_trigger+0x14a/0x260\n\n finish_task_switch+0x71/0x230\n __schedule+0x256/0x890\n recalc_sigpending+0x1b/0x50\n xen_sched_clock+0x15/0x20\n __rb_reserve_next+0x12d/0x140\n ring_buffer_lock_reserve+0x123/0x3d0\n event_triggers_call+0x87/0xb0\n trace_event_buffer_commit+0x1c4/0x210\n xen_clocksource_get_cycles+0x15/0x20\n ktime_get_ts64+0x51/0xf0\n SyS_ppoll+0x160/0x1a0\n SyS_ppoll+0x160/0x1a0\n do_syscall_64+0x73/0x130\n entry_SYSCALL_64_after_hwframe+0x41/0xa6\n...\nRIP: xennet_poll+0xae/0xd20 RSP: ffffb4f041933900\nCR2: 0000000000000008\n---[ end trace f8601785b354351c ]---\n\nxen frontend should remove the NAPIs for the old srings before live\nmigration as the bond srings are destroyed\n\nThere is a tiny window between the srings are set to NULL and\nthe NAPIs are disabled, It is safe as the NAPI threads are still\nfrozen at that time"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/xen-netfront.c"
                    ],
                    "versions": [
                        {
                            "version": "4ec2411980d0",
                            "lessThan": "99859947517e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4ec2411980d0",
                            "lessThan": "ed773dd798bf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4ec2411980d0",
                            "lessThan": "e6860c889f4a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4ec2411980d0",
                            "lessThan": "e6e897d4fe2f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4ec2411980d0",
                            "lessThan": "f2dd60fd3fe9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4ec2411980d0",
                            "lessThan": "d50b7914fae0",
                            "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/xen-netfront.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.24",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.24",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "4.19.269",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.4.227",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.10.159",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.15.83",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.0.13",
                            "lessThanOrEqual": "6.0.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/99859947517e446058ad7243ee81d2f9801fa3dd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ed773dd798bf720756d20021b8d8a4a3d7184bda"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e6860c889f4ad50b6ab696f5ea154295d72cf27a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e6e897d4fe2f89c0bd94600a40bedf5e6e75e050"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f2dd60fd3fe98bd36a91b0c6e10bfe9d66258f84"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d50b7914fae04d840ce36491d22133070b18cca9"
                }
            ],
            "title": "xen-netfront: Fix NULL sring after live migration",
            "x_generator": {
                "engine": "bippy-c9c4e1df01b2"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2022-48969",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-10-22T13:19:22.834399Z"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-10-22T13:28:38.112Z"
                }
            }
        ]
    }
}