{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47080", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-29T22:33:44.298Z", "datePublished": "2024-03-01T21:15:15.942Z", "dateUpdated": "2026-05-11T13:47:41.858Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:47:41.858Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Prevent divide-by-zero error triggered by the user\n\nThe user_entry_size is supplied by the user and later used as a\ndenominator to calculate number of entries. The zero supplied by the user\nwill trigger the following divide-by-zero error:\n\n divide error: 0000 [#1] SMP KASAN PTI\n CPU: 4 PID: 497 Comm: c_repro Not tainted 5.13.0-rc1+ #281\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\n RIP: 0010:ib_uverbs_handler_UVERBS_METHOD_QUERY_GID_TABLE+0x1b1/0x510\n Code: 87 59 03 00 00 e8 9f ab 1e ff 48 8d bd a8 00 00 00 e8 d3 70 41 ff 44 0f b7 b5 a8 00 00 00 e8 86 ab 1e ff 31 d2 4c 89 f0 31 ff <49> f7 f5 48 89 d6 48 89 54 24 10 48 89 04 24 e8 1b ad 1e ff 48 8b\n RSP: 0018:ffff88810416f828 EFLAGS: 00010246\n RAX: 0000000000000008 RBX: 1ffff1102082df09 RCX: ffffffff82183f3d\n RDX: 0000000000000000 RSI: ffff888105f2da00 RDI: 0000000000000000\n RBP: ffff88810416fa98 R08: 0000000000000001 R09: ffffed102082df5f\n R10: ffff88810416faf7 R11: ffffed102082df5e R12: 0000000000000000\n R13: 0000000000000000 R14: 0000000000000008 R15: ffff88810416faf0\n FS: 00007f5715efa740(0000) GS:ffff88811a700000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000000020000840 CR3: 000000010c2e0001 CR4: 0000000000370ea0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n Call Trace:\n ? ib_uverbs_handler_UVERBS_METHOD_INFO_HANDLES+0x4b0/0x4b0\n ib_uverbs_cmd_verbs+0x1546/0x1940\n ib_uverbs_ioctl+0x186/0x240\n __x64_sys_ioctl+0x38a/0x1220\n do_syscall_64+0x3f/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/core/uverbs_std_types_device.c" ], "versions": [ { "version": "9f85cbe50aa044a46f0a22fda323fa27b80c82da", "lessThan": "66ab7fcdac34b890017f04f391507ef5b2b89a13", "status": "affected", "versionType": "git" }, { "version": "9f85cbe50aa044a46f0a22fda323fa27b80c82da", "lessThan": "e6871b4270c05f8b212e7d98aee82b357972c80a", "status": "affected", "versionType": "git" }, { "version": "9f85cbe50aa044a46f0a22fda323fa27b80c82da", "lessThan": "54d87913f147a983589923c7f651f97de9af5be1", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/core/uverbs_std_types_device.c" ], "versions": [ { "version": "5.10", "status": "affected" }, { "version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.40", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.12.7", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.13", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.10.40" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.12.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.13" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/66ab7fcdac34b890017f04f391507ef5b2b89a13" }, { "url": "https://git.kernel.org/stable/c/e6871b4270c05f8b212e7d98aee82b357972c80a" }, { "url": "https://git.kernel.org/stable/c/54d87913f147a983589923c7f651f97de9af5be1" } ], "title": "RDMA/core: Prevent divide-by-zero error triggered by the user", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2021-47080", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-03-04T20:26:31.423427Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:14:01.469Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:24:40.137Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/66ab7fcdac34b890017f04f391507ef5b2b89a13", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/e6871b4270c05f8b212e7d98aee82b357972c80a", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/54d87913f147a983589923c7f651f97de9af5be1", "tags": [ "x_transferred" ] } ] } ] } }