| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen/balloon: use a kernel thread instead a workqueue\n\nToday the Xen ballooning is done via delayed work in a workqueue. This\nmight result in workqueue hangups being reported in case of large\namounts of memory are being ballooned in one go (here 16GB):\n\nBUG: workqueue lockup - pool cpus=6 node=0 flags=0x0 nice=0 stuck for 64s!\nShowing busy workqueues and worker pools:\nworkqueue events: flags=0x0\n pwq 12: cpus=6 node=0 flags=0x0 nice=0 active=2/256 refcnt=3\n in-flight: 229:balloon_process\n pending: cache_reap\nworkqueue events_freezable_power_: flags=0x84\n pwq 12: cpus=6 node=0 flags=0x0 nice=0 active=1/256 refcnt=2\n pending: disk_events_workfn\nworkqueue mm_percpu_wq: flags=0x8\n pwq 12: cpus=6 node=0 flags=0x0 nice=0 active=1/256 refcnt=2\n pending: vmstat_update\npool 12: cpus=6 node=0 flags=0x0 nice=0 hung=64s workers=3 idle: 2222 43\n\nThis can easily be avoided by using a dedicated kernel thread for doing\nthe ballooning work." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "versions": [ |
| { |
| "version": "1da177e4c3f4", |
| "lessThan": "c5d5a43dd2b6", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "1da177e4c3f4", |
| "lessThan": "6bba79c6a073", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "1da177e4c3f4", |
| "lessThan": "29917bbb07c3", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "1da177e4c3f4", |
| "lessThan": "372d3e6ea1e1", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "1da177e4c3f4", |
| "lessThan": "922fd5b6bb13", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "1da177e4c3f4", |
| "lessThan": "8480ed9c2bbd", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "versions": [ |
| { |
| "version": "4.14.249", |
| "lessThanOrEqual": "4.14.*", |
| "status": "unaffected", |
| "versionType": "custom" |
| }, |
| { |
| "version": "4.19.209", |
| "lessThanOrEqual": "4.19.*", |
| "status": "unaffected", |
| "versionType": "custom" |
| }, |
| { |
| "version": "5.4.150", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "custom" |
| }, |
| { |
| "version": "5.10.70", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "custom" |
| }, |
| { |
| "version": "5.14.9", |
| "lessThanOrEqual": "5.14.*", |
| "status": "unaffected", |
| "versionType": "custom" |
| }, |
| { |
| "version": "5.15", |
| "lessThanOrEqual": "*", |
| "status": "unaffected", |
| "versionType": "original_commit_for_fix" |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/c5d5a43dd2b649a0a290bfed00fb76d1aff89be6" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/6bba79c6a073741b672b0bf86a1f03c0fe47f973" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/29917bbb07c30be295dece245c7c21872e1a6fbb" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/372d3e6ea1e115942fdfb4b25f7003d822d071be" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/922fd5b6bb13ad31ff36e86e2eba2f26d8135272" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/8480ed9c2bbd56fc86524998e5f2e3e22f5038f6" |
| } |
| ], |
| "title": "xen/balloon: use a kernel thread instead a workqueue", |
| "x_generator": { |
| "engine": "bippy-d175d3acf727" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2021-47377", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
