205 lines
11 KiB
JSON
205 lines
11 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2021-47349",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-05-21T14:28:16.983Z",
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"datePublished": "2024-05-21T14:35:54.314Z",
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"dateUpdated": "2026-05-11T13:52:58.952Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T13:52:58.952Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmwifiex: bring down link before deleting interface\n\nWe can deadlock when rmmod'ing the driver or going through firmware\nreset, because the cfg80211_unregister_wdev() has to bring down the link\nfor us, ... which then grab the same wiphy lock.\n\nnl80211_del_interface() already handles a very similar case, with a nice\ndescription:\n\n /*\n * We hold RTNL, so this is safe, without RTNL opencount cannot\n * reach 0, and thus the rdev cannot be deleted.\n *\n * We need to do it for the dev_close(), since that will call\n * the netdev notifiers, and we need to acquire the mutex there\n * but don't know if we get there from here or from some other\n * place (e.g. \"ip link set ... down\").\n */\n mutex_unlock(&rdev->wiphy.mtx);\n...\n\nDo similarly for mwifiex teardown, by ensuring we bring the link down\nfirst.\n\nSample deadlock trace:\n\n[ 247.103516] INFO: task rmmod:2119 blocked for more than 123 seconds.\n[ 247.110630] Not tainted 5.12.4 #5\n[ 247.115796] \"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n[ 247.124557] task:rmmod state:D stack: 0 pid: 2119 ppid: 2114 flags:0x00400208\n[ 247.133905] Call trace:\n[ 247.136644] __switch_to+0x130/0x170\n[ 247.140643] __schedule+0x714/0xa0c\n[ 247.144548] schedule_preempt_disabled+0x88/0xf4\n[ 247.149714] __mutex_lock_common+0x43c/0x750\n[ 247.154496] mutex_lock_nested+0x5c/0x68\n[ 247.158884] cfg80211_netdev_notifier_call+0x280/0x4e0 [cfg80211]\n[ 247.165769] raw_notifier_call_chain+0x4c/0x78\n[ 247.170742] call_netdevice_notifiers_info+0x68/0xa4\n[ 247.176305] __dev_close_many+0x7c/0x138\n[ 247.180693] dev_close_many+0x7c/0x10c\n[ 247.184893] unregister_netdevice_many+0xfc/0x654\n[ 247.190158] unregister_netdevice_queue+0xb4/0xe0\n[ 247.195424] _cfg80211_unregister_wdev+0xa4/0x204 [cfg80211]\n[ 247.201816] cfg80211_unregister_wdev+0x20/0x2c [cfg80211]\n[ 247.208016] mwifiex_del_virtual_intf+0xc8/0x188 [mwifiex]\n[ 247.214174] mwifiex_uninit_sw+0x158/0x1b0 [mwifiex]\n[ 247.219747] mwifiex_remove_card+0x38/0xa0 [mwifiex]\n[ 247.225316] mwifiex_pcie_remove+0xd0/0xe0 [mwifiex_pcie]\n[ 247.231451] pci_device_remove+0x50/0xe0\n[ 247.235849] device_release_driver_internal+0x110/0x1b0\n[ 247.241701] driver_detach+0x5c/0x9c\n[ 247.245704] bus_remove_driver+0x84/0xb8\n[ 247.250095] driver_unregister+0x3c/0x60\n[ 247.254486] pci_unregister_driver+0x2c/0x90\n[ 247.259267] cleanup_module+0x18/0xcdc [mwifiex_pcie]"
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/wireless/marvell/mwifiex/main.c"
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],
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"versions": [
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{
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"version": "a05829a7222e9d10c416dd2dbbf3929fe6646b89",
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"lessThan": "a3041d39d3c14da97fa3476835aba043ba810cf0",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "a05829a7222e9d10c416dd2dbbf3929fe6646b89",
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"lessThan": "35af69c7c0490fdccfc159c6a87e4d1dc070838a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "a05829a7222e9d10c416dd2dbbf3929fe6646b89",
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"lessThan": "1f9482aa8d412b4ba06ce6ab8e333fb8ca29a06e",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/wireless/marvell/mwifiex/main.c"
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],
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"versions": [
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{
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"version": "5.12",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.12",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.12.18",
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"lessThanOrEqual": "5.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.13.3",
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"lessThanOrEqual": "5.13.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.14",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.12",
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"versionEndExcluding": "5.12.18"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.12",
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"versionEndExcluding": "5.13.3"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.12",
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"versionEndExcluding": "5.14"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/a3041d39d3c14da97fa3476835aba043ba810cf0"
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},
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{
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"url": "https://git.kernel.org/stable/c/35af69c7c0490fdccfc159c6a87e4d1dc070838a"
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},
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{
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"url": "https://git.kernel.org/stable/c/1f9482aa8d412b4ba06ce6ab8e333fb8ca29a06e"
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}
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],
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"title": "mwifiex: bring down link before deleting interface",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2024-08-04T05:32:08.509Z"
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},
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/a3041d39d3c14da97fa3476835aba043ba810cf0",
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"tags": [
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"x_transferred"
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]
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},
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{
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"url": "https://git.kernel.org/stable/c/35af69c7c0490fdccfc159c6a87e4d1dc070838a",
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"tags": [
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"x_transferred"
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]
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},
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{
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"url": "https://git.kernel.org/stable/c/1f9482aa8d412b4ba06ce6ab8e333fb8ca29a06e",
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"tags": [
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"x_transferred"
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]
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}
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]
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},
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2021-47349",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2024-09-10T15:38:43.542695Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-09-11T17:32:57.818Z"
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}
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}
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]
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}
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} |