{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2022-48842", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-16T11:38:08.910Z", "datePublished": "2024-07-16T12:25:12.499Z", "dateUpdated": "2024-09-11T17:34:09.633Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-07-16T12:25:12.499Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: Fix race condition during interface enslave\n\nCommit 5dbbbd01cbba83 (\"ice: Avoid RTNL lock when re-creating\nauxiliary device\") changes a process of re-creation of aux device\nso ice_plug_aux_dev() is called from ice_service_task() context.\nThis unfortunately opens a race window that can result in dead-lock\nwhen interface has left LAG and immediately enters LAG again.\n\nReproducer:\n```\n#!/bin/sh\n\nip link add lag0 type bond mode 1 miimon 100\nip link set lag0\n\nfor n in {1..10}; do\n echo Cycle: $n\n ip link set ens7f0 master lag0\n sleep 1\n ip link set ens7f0 nomaster\ndone\n```\n\nThis results in:\n[20976.208697] Workqueue: ice ice_service_task [ice]\n[20976.213422] Call Trace:\n[20976.215871] __schedule+0x2d1/0x830\n[20976.219364] schedule+0x35/0xa0\n[20976.222510] schedule_preempt_disabled+0xa/0x10\n[20976.227043] __mutex_lock.isra.7+0x310/0x420\n[20976.235071] enum_all_gids_of_dev_cb+0x1c/0x100 [ib_core]\n[20976.251215] ib_enum_roce_netdev+0xa4/0xe0 [ib_core]\n[20976.256192] ib_cache_setup_one+0x33/0xa0 [ib_core]\n[20976.261079] ib_register_device+0x40d/0x580 [ib_core]\n[20976.266139] irdma_ib_register_device+0x129/0x250 [irdma]\n[20976.281409] irdma_probe+0x2c1/0x360 [irdma]\n[20976.285691] auxiliary_bus_probe+0x45/0x70\n[20976.289790] really_probe+0x1f2/0x480\n[20976.298509] driver_probe_device+0x49/0xc0\n[20976.302609] bus_for_each_drv+0x79/0xc0\n[20976.306448] __device_attach+0xdc/0x160\n[20976.310286] bus_probe_device+0x9d/0xb0\n[20976.314128] device_add+0x43c/0x890\n[20976.321287] __auxiliary_device_add+0x43/0x60\n[20976.325644] ice_plug_aux_dev+0xb2/0x100 [ice]\n[20976.330109] ice_service_task+0xd0c/0xed0 [ice]\n[20976.342591] process_one_work+0x1a7/0x360\n[20976.350536] worker_thread+0x30/0x390\n[20976.358128] kthread+0x10a/0x120\n[20976.365547] ret_from_fork+0x1f/0x40\n...\n[20976.438030] task:ip state:D stack: 0 pid:213658 ppid:213627 flags:0x00004084\n[20976.446469] Call Trace:\n[20976.448921] __schedule+0x2d1/0x830\n[20976.452414] schedule+0x35/0xa0\n[20976.455559] schedule_preempt_disabled+0xa/0x10\n[20976.460090] __mutex_lock.isra.7+0x310/0x420\n[20976.464364] device_del+0x36/0x3c0\n[20976.467772] ice_unplug_aux_dev+0x1a/0x40 [ice]\n[20976.472313] ice_lag_event_handler+0x2a2/0x520 [ice]\n[20976.477288] notifier_call_chain+0x47/0x70\n[20976.481386] __netdev_upper_dev_link+0x18b/0x280\n[20976.489845] bond_enslave+0xe05/0x1790 [bonding]\n[20976.494475] do_setlink+0x336/0xf50\n[20976.502517] __rtnl_newlink+0x529/0x8b0\n[20976.543441] rtnl_newlink+0x43/0x60\n[20976.546934] rtnetlink_rcv_msg+0x2b1/0x360\n[20976.559238] netlink_rcv_skb+0x4c/0x120\n[20976.563079] netlink_unicast+0x196/0x230\n[20976.567005] netlink_sendmsg+0x204/0x3d0\n[20976.570930] sock_sendmsg+0x4c/0x50\n[20976.574423] ____sys_sendmsg+0x1eb/0x250\n[20976.586807] ___sys_sendmsg+0x7c/0xc0\n[20976.606353] __sys_sendmsg+0x57/0xa0\n[20976.609930] do_syscall_64+0x5b/0x1a0\n[20976.613598] entry_SYSCALL_64_after_hwframe+0x65/0xca\n\n1. Command 'ip link ... set nomaster' causes that ice_plug_aux_dev()\n is called from ice_service_task() context, aux device is created\n and associated device->lock is taken.\n2. Command 'ip link ... set master...' calls ice's notifier under\n RTNL lock and that notifier calls ice_unplug_aux_dev(). That\n function tries to take aux device->lock but this is already taken\n by ice_plug_aux_dev() in step 1\n3. Later ice_plug_aux_dev() tries to take RTNL lock but this is already\n taken in step 2\n4. Dead-lock\n\nThe patch fixes this issue by following changes:\n- Bit ICE_FLAG_PLUG_AUX_DEV is kept to be set during ice_plug_aux_dev()\n call in ice_service_task()\n- The bit is checked in ice_clear_rdma_cap() and only if it is not set\n then ice_unplug_aux_dev() is called. If it is set (in other words\n plugging of aux device was requested and ice_plug_aux_dev() is\n potentially running) then the function only clears the\n---truncated---" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/intel/ice/ice.h", "drivers/net/ethernet/intel/ice/ice_main.c" ], "versions": [ { "version": "1da177e4c3f4", "lessThan": "a9bbacc53d1f", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f4", "lessThan": "e1014fc55723", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f4", "lessThan": "5cb1ebdbc434", "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/ethernet/intel/ice/ice.h", "drivers/net/ethernet/intel/ice/ice_main.c" ], "versions": [ { "version": "5.15.30", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.16.16", "lessThanOrEqual": "5.16.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.17", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/a9bbacc53d1f5ed8febbfdf31401d20e005f49ef" }, { "url": "https://git.kernel.org/stable/c/e1014fc5572375658fa421531cedb6e084f477dc" }, { "url": "https://git.kernel.org/stable/c/5cb1ebdbc4342b1c2ce89516e19808d64417bdbc" } ], "title": "ice: Fix race condition during interface enslave", "x_generator": { "engine": "bippy-c9c4e1df01b2" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T15:25:01.534Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/a9bbacc53d1f5ed8febbfdf31401d20e005f49ef", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/e1014fc5572375658fa421531cedb6e084f477dc", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/5cb1ebdbc4342b1c2ce89516e19808d64417bdbc", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2022-48842", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T16:56:50.883714Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:34:09.633Z" } } ] } }