184 lines
9.5 KiB
JSON
184 lines
9.5 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-2022-49901",
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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": "2025-05-01T14:05:17.245Z",
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"datePublished": "2025-05-01T14:10:46.974Z",
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"dateUpdated": "2026-05-11T19:08:54.911Z"
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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": "2026-05-11T19:08:54.911Z"
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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\nblk-mq: Fix kmemleak in blk_mq_init_allocated_queue\n\nThere is a kmemleak caused by modprobe null_blk.ko\n\nunreferenced object 0xffff8881acb1f000 (size 1024):\n comm \"modprobe\", pid 836, jiffies 4294971190 (age 27.068s)\n hex dump (first 32 bytes):\n 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N..........\n ff ff ff ff ff ff ff ff 00 53 99 9e ff ff ff ff .........S......\n backtrace:\n [<000000004a10c249>] kmalloc_node_trace+0x22/0x60\n [<00000000648f7950>] blk_mq_alloc_and_init_hctx+0x289/0x350\n [<00000000af06de0e>] blk_mq_realloc_hw_ctxs+0x2fe/0x3d0\n [<00000000e00c1872>] blk_mq_init_allocated_queue+0x48c/0x1440\n [<00000000d16b4e68>] __blk_mq_alloc_disk+0xc8/0x1c0\n [<00000000d10c98c3>] 0xffffffffc450d69d\n [<00000000b9299f48>] 0xffffffffc4538392\n [<0000000061c39ed6>] do_one_initcall+0xd0/0x4f0\n [<00000000b389383b>] do_init_module+0x1a4/0x680\n [<0000000087cf3542>] load_module+0x6249/0x7110\n [<00000000beba61b8>] __do_sys_finit_module+0x140/0x200\n [<00000000fdcfff51>] do_syscall_64+0x35/0x80\n [<000000003c0f1f71>] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThat is because q->ma_ops is set to NULL before blk_release_queue is\ncalled.\n\nblk_mq_init_queue_data\n blk_mq_init_allocated_queue\n blk_mq_realloc_hw_ctxs\n for (i = 0; i < set->nr_hw_queues; i++) {\n old_hctx = xa_load(&q->hctx_table, i);\n if (!blk_mq_alloc_and_init_hctx(.., i, ..))\t\t[1]\n if (!old_hctx)\n\t break;\n\n xa_for_each_start(&q->hctx_table, j, hctx, j)\n blk_mq_exit_hctx(q, set, hctx, j); \t\t\t[2]\n\n if (!q->nr_hw_queues)\t\t\t\t\t[3]\n goto err_hctxs;\n\n err_exit:\n q->mq_ops = NULL;\t\t\t \t\t\t[4]\n\n blk_put_queue\n blk_release_queue\n if (queue_is_mq(q))\t\t\t\t\t[5]\n blk_mq_release(q);\n\n[1]: blk_mq_alloc_and_init_hctx failed at i != 0.\n[2]: The hctxs allocated by [1] are moved to q->unused_hctx_list and\nwill be cleaned up in blk_mq_release.\n[3]: q->nr_hw_queues is 0.\n[4]: Set q->mq_ops to NULL.\n[5]: queue_is_mq returns false due to [4]. And blk_mq_release\nwill not be called. The hctxs in q->unused_hctx_list are leaked.\n\nTo fix it, call blk_release_queue in exception path."
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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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"block/blk-mq.c"
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],
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"versions": [
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{
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"version": "2f8f1336a48bd5186de3476da0a3e2ec06d0533a",
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"lessThan": "2dc97e15a54b7bdf457848aa8c663c98a24e58a6",
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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": "2f8f1336a48bd5186de3476da0a3e2ec06d0533a",
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"lessThan": "943f45b9399ed8b2b5190cbc797995edaa97f58f",
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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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"block/blk-mq.c"
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],
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"versions": [
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{
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"version": "5.2",
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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": "5.2",
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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": "6.0.8",
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"lessThanOrEqual": "6.0.*",
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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": "6.1",
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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": "5.2",
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"versionEndExcluding": "6.0.8"
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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": "5.2",
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"versionEndExcluding": "6.1"
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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/2dc97e15a54b7bdf457848aa8c663c98a24e58a6"
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},
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{
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"url": "https://git.kernel.org/stable/c/943f45b9399ed8b2b5190cbc797995edaa97f58f"
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}
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],
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"title": "blk-mq: Fix kmemleak in blk_mq_init_allocated_queue",
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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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"problemTypes": [
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{
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"descriptions": [
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{
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"type": "CWE",
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"cweId": "CWE-401",
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"lang": "en",
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"description": "CWE-401 Missing Release of Memory after Effective Lifetime"
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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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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 5.5,
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"attackVector": "LOCAL",
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:L/AC:L/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": "LOW",
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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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"timestamp": "2025-10-01T14:59:17.778258Z",
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"id": "CVE-2022-49901",
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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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"role": "CISA Coordinator",
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"version": "2.0.3"
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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": "2025-10-01T20:16:35.594Z"
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}
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}
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]
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}
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} |