310 lines
15 KiB
JSON
310 lines
15 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-2022-49300",
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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": "2025-02-26T02:08:31.534Z",
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"datePublished": "2025-02-26T02:10:35.594Z",
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"dateUpdated": "2026-05-11T18:57:00.337Z"
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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": "2026-05-11T18:57:00.337Z"
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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\nnbd: fix race between nbd_alloc_config() and module removal\n\nWhen nbd module is being removing, nbd_alloc_config() may be\ncalled concurrently by nbd_genl_connect(), although try_module_get()\nwill return false, but nbd_alloc_config() doesn't handle it.\n\nThe race may lead to the leak of nbd_config and its related\nresources (e.g, recv_workq) and oops in nbd_read_stat() due\nto the unload of nbd module as shown below:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000040\n Oops: 0000 [#1] SMP PTI\n CPU: 5 PID: 13840 Comm: kworker/u17:33 Not tainted 5.14.0+ #1\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)\n Workqueue: knbd16-recv recv_work [nbd]\n RIP: 0010:nbd_read_stat.cold+0x130/0x1a4 [nbd]\n Call Trace:\n recv_work+0x3b/0xb0 [nbd]\n process_one_work+0x1ed/0x390\n worker_thread+0x4a/0x3d0\n kthread+0x12a/0x150\n ret_from_fork+0x22/0x30\n\nFixing it by checking the return value of try_module_get()\nin nbd_alloc_config(). As nbd_alloc_config() may return ERR_PTR(-ENODEV),\nassign nbd->config only when nbd_alloc_config() succeeds to ensure\nthe value of nbd->config is binary (valid or NULL).\n\nAlso adding a debug message to check the reference counter\nof nbd_config during module removal."
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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/block/nbd.c"
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],
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"versions": [
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{
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"version": "5ea8d10802ec4c153a6e21eebaf412e2abd29736",
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"lessThan": "165cf2e0019fa6cedc75b456490c41494c34abb4",
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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": "5ea8d10802ec4c153a6e21eebaf412e2abd29736",
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"lessThan": "2573f2375b64280be977431701ed5d33b75b9ad0",
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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": "5ea8d10802ec4c153a6e21eebaf412e2abd29736",
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"lessThan": "8a7da4ced236ce6637fe70f14ca18e718d4bf9e9",
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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": "5ea8d10802ec4c153a6e21eebaf412e2abd29736",
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"lessThan": "122e4adaff2439f1cc18cc7e931980fa7560df5c",
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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": "5ea8d10802ec4c153a6e21eebaf412e2abd29736",
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"lessThan": "71c142f910da44421213ade601bcbd23ceae19fa",
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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": "5ea8d10802ec4c153a6e21eebaf412e2abd29736",
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"lessThan": "2888fa41985f93ed0a6837cfbb06bcbfd7fa2314",
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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": "5ea8d10802ec4c153a6e21eebaf412e2abd29736",
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"lessThan": "d09525720dd5201756f698bee1076de9aefd4602",
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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": "5ea8d10802ec4c153a6e21eebaf412e2abd29736",
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"lessThan": "c55b2b983b0fa012942c3eb16384b2b722caa810",
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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/block/nbd.c"
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],
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"versions": [
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{
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"version": "4.12",
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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": "4.12",
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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": "4.14.283",
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"lessThanOrEqual": "4.14.*",
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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": "4.19.247",
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"lessThanOrEqual": "4.19.*",
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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": "5.4.198",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.122",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.47",
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"lessThanOrEqual": "5.15.*",
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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": "5.17.15",
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"lessThanOrEqual": "5.17.*",
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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": "5.18.4",
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"lessThanOrEqual": "5.18.*",
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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": "5.19",
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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": "4.12",
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"versionEndExcluding": "4.14.283"
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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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"versionEndExcluding": "5.10.122"
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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/165cf2e0019fa6cedc75b456490c41494c34abb4"
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},
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{
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"url": "https://git.kernel.org/stable/c/2573f2375b64280be977431701ed5d33b75b9ad0"
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},
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{
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"url": "https://git.kernel.org/stable/c/8a7da4ced236ce6637fe70f14ca18e718d4bf9e9"
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},
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{
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"url": "https://git.kernel.org/stable/c/122e4adaff2439f1cc18cc7e931980fa7560df5c"
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},
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{
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"url": "https://git.kernel.org/stable/c/71c142f910da44421213ade601bcbd23ceae19fa"
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},
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{
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"url": "https://git.kernel.org/stable/c/2888fa41985f93ed0a6837cfbb06bcbfd7fa2314"
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},
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{
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"url": "https://git.kernel.org/stable/c/d09525720dd5201756f698bee1076de9aefd4602"
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},
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{
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"url": "https://git.kernel.org/stable/c/c55b2b983b0fa012942c3eb16384b2b722caa810"
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}
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],
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"title": "nbd: fix race between nbd_alloc_config() and module removal",
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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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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 4.7,
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"attackVector": "LOCAL",
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"integrityImpact": "NONE",
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"userInteraction": "NONE",
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"attackComplexity": "HIGH",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "NONE"
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}
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},
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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-2022-49300",
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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": "2025-10-01T19:44:48.211252Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-476",
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"description": "CWE-476 NULL Pointer Dereference"
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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": "2025-10-01T19:46:59.286Z"
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}
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}
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]
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}
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} |