205 lines
10 KiB
JSON
205 lines
10 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-2021-46970",
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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": "2024-02-27T18:42:55.943Z",
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"datePublished": "2024-02-27T18:47:06.071Z",
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"dateUpdated": "2026-05-11T13:45:27.179Z"
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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": "2026-05-11T13:45:27.179Z"
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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\nbus: mhi: pci_generic: Remove WQ_MEM_RECLAIM flag from state workqueue\n\nA recent change created a dedicated workqueue for the state-change work\nwith WQ_HIGHPRI (no strong reason for that) and WQ_MEM_RECLAIM flags,\nbut the state-change work (mhi_pm_st_worker) does not guarantee forward\nprogress under memory pressure, and will even wait on various memory\nallocations when e.g. creating devices, loading firmware, etc... The\nwork is then not part of a memory reclaim path...\n\nMoreover, this causes a warning in check_flush_dependency() since we end\nup in code that flushes a non-reclaim workqueue:\n\n[ 40.969601] workqueue: WQ_MEM_RECLAIM mhi_hiprio_wq:mhi_pm_st_worker [mhi] is flushing !WQ_MEM_RECLAIM events_highpri:flush_backlog\n[ 40.969612] WARNING: CPU: 4 PID: 158 at kernel/workqueue.c:2607 check_flush_dependency+0x11c/0x140\n[ 40.969733] Call Trace:\n[ 40.969740] __flush_work+0x97/0x1d0\n[ 40.969745] ? wake_up_process+0x15/0x20\n[ 40.969749] ? insert_work+0x70/0x80\n[ 40.969750] ? __queue_work+0x14a/0x3e0\n[ 40.969753] flush_work+0x10/0x20\n[ 40.969756] rollback_registered_many+0x1c9/0x510\n[ 40.969759] unregister_netdevice_queue+0x94/0x120\n[ 40.969761] unregister_netdev+0x1d/0x30\n[ 40.969765] mhi_net_remove+0x1a/0x40 [mhi_net]\n[ 40.969770] mhi_driver_remove+0x124/0x250 [mhi]\n[ 40.969776] device_release_driver_internal+0xf0/0x1d0\n[ 40.969778] device_release_driver+0x12/0x20\n[ 40.969782] bus_remove_device+0xe1/0x150\n[ 40.969786] device_del+0x17b/0x3e0\n[ 40.969791] mhi_destroy_device+0x9a/0x100 [mhi]\n[ 40.969796] ? mhi_unmap_single_use_bb+0x50/0x50 [mhi]\n[ 40.969799] device_for_each_child+0x5e/0xa0\n[ 40.969804] mhi_pm_st_worker+0x921/0xf50 [mhi]"
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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/bus/mhi/core/init.c"
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],
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"versions": [
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{
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"version": "8f70397876872789b2a5deba804eb6216fb5deb7",
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"lessThan": "abd1510c08a13c88d24b622a83c82e87ff1d3135",
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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": "8f70397876872789b2a5deba804eb6216fb5deb7",
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"lessThan": "ed541cff35cbdb695f0c98ef506dd7218883fc07",
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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": "8f70397876872789b2a5deba804eb6216fb5deb7",
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"lessThan": "0fccbf0a3b690b162f53b13ed8bc442ea33437dc",
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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/bus/mhi/core/init.c"
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],
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"versions": [
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{
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"version": "5.11",
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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": "5.11",
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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": "5.11.20",
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"lessThanOrEqual": "5.11.*",
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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": "5.12.3",
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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",
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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": "5.11",
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"versionEndExcluding": "5.11.20"
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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": "5.11",
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"versionEndExcluding": "5.12.3"
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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": "5.11",
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"versionEndExcluding": "5.13"
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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/abd1510c08a13c88d24b622a83c82e87ff1d3135"
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},
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{
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"url": "https://git.kernel.org/stable/c/ed541cff35cbdb695f0c98ef506dd7218883fc07"
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},
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{
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"url": "https://git.kernel.org/stable/c/0fccbf0a3b690b162f53b13ed8bc442ea33437dc"
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}
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],
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"title": "bus: mhi: pci_generic: Remove WQ_MEM_RECLAIM flag from state workqueue",
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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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"title": "CISA ADP Vulnrichment",
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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-2021-46970",
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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": "2024-03-05T22:31:16.861503Z"
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}
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}
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}
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],
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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": "2024-06-04T17:13:05.954Z"
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}
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},
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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": "2024-08-04T05:17:42.997Z"
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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/abd1510c08a13c88d24b622a83c82e87ff1d3135",
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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/ed541cff35cbdb695f0c98ef506dd7218883fc07",
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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/0fccbf0a3b690b162f53b13ed8bc442ea33437dc",
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"tags": [
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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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} |