{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47027", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-27T18:42:55.961Z", "datePublished": "2024-02-28T08:13:38.385Z", "dateUpdated": "2026-05-11T13:46:32.579Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:46:32.579Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmt76: mt7921: fix kernel crash when the firmware fails to download\n\nFix kernel crash when the firmware is missing or fails to download.\n\n[ 9.444758] kernel BUG at drivers/pci/msi.c:375!\n[ 9.449363] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP\n[ 9.501033] pstate: a0400009 (NzCv daif +PAN -UAO)\n[ 9.505814] pc : free_msi_irqs+0x180/0x184\n[ 9.509897] lr : free_msi_irqs+0x40/0x184\n[ 9.513893] sp : ffffffc015193870\n[ 9.517194] x29: ffffffc015193870 x28: 00000000f0e94fa2\n[ 9.522492] x27: 0000000000000acd x26: 000000000000009a\n[ 9.527790] x25: ffffffc0152cee58 x24: ffffffdbb383e0d8\n[ 9.533087] x23: ffffffdbb38628d0 x22: 0000000000040200\n[ 9.538384] x21: ffffff8cf7de7318 x20: ffffff8cd65a2480\n[ 9.543681] x19: ffffff8cf7de7000 x18: 0000000000000000\n[ 9.548979] x17: ffffff8cf9ca03b4 x16: ffffffdc13ad9a34\n[ 9.554277] x15: 0000000000000000 x14: 0000000000080800\n[ 9.559575] x13: ffffff8cd65a2980 x12: 0000000000000000\n[ 9.564873] x11: ffffff8cfa45d820 x10: ffffff8cfa45d6d0\n[ 9.570171] x9 : 0000000000000040 x8 : ffffff8ccef1b780\n[ 9.575469] x7 : aaaaaaaaaaaaaaaa x6 : 0000000000000000\n[ 9.580766] x5 : ffffffdc13824900 x4 : ffffff8ccefe0000\n[ 9.586063] x3 : 0000000000000000 x2 : 0000000000000000\n[ 9.591362] x1 : 0000000000000125 x0 : ffffff8ccefe0000\n[ 9.596660] Call trace:\n[ 9.599095] free_msi_irqs+0x180/0x184\n[ 9.602831] pci_disable_msi+0x100/0x130\n[ 9.606740] pci_free_irq_vectors+0x24/0x30\n[ 9.610915] mt7921_pci_probe+0xbc/0x250 [mt7921e]\n[ 9.615693] pci_device_probe+0xd4/0x14c\n[ 9.619604] really_probe+0x134/0x2ec\n[ 9.623252] driver_probe_device+0x64/0xfc\n[ 9.627335] device_driver_attach+0x4c/0x6c\n[ 9.631506] __driver_attach+0xac/0xc0\n[ 9.635243] bus_for_each_dev+0x8c/0xd4\n[ 9.639066] driver_attach+0x2c/0x38\n[ 9.642628] bus_add_driver+0xfc/0x1d0\n[ 9.646365] driver_register+0x64/0xf8\n[ 9.650101] __pci_register_driver+0x6c/0x7c\n[ 9.654360] init_module+0x28/0xfdc [mt7921e]\n[ 9.658704] do_one_initcall+0x13c/0x2d0\n[ 9.662615] do_init_module+0x58/0x1e8\n[ 9.666351] load_module+0xd80/0xeb4\n[ 9.669912] __arm64_sys_finit_module+0xa8/0xe0\n[ 9.674430] el0_svc_common+0xa4/0x16c\n[ 9.678168] el0_svc_compat_handler+0x2c/0x40\n[ 9.682511] el0_svc_compat+0x8/0x10\n[ 9.686076] Code: a94257f6 f9400bf7 a8c47bfd d65f03c0 (d4210000)\n[ 9.692155] ---[ end trace 7621f966afbf0a29 ]---\n[ 9.697385] Kernel panic - not syncing: Fatal exception\n[ 9.702599] SMP: stopping secondary CPUs\n[ 9.706549] Kernel Offset: 0x1c03600000 from 0xffffffc010000000\n[ 9.712456] PHYS_OFFSET: 0xfffffff440000000\n[ 9.716625] CPU features: 0x080026,2a80aa18\n[ 9.720795] Memory Limit: none" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/wireless/mediatek/mt76/mt7921/pci.c" ], "versions": [ { "version": "5c14a5f944b91371961548b1907802f74a4d2e5c", "lessThan": "a46b536cd60c0dbd4bf767c62a8774dec52bf099", "status": "affected", "versionType": "git" }, { "version": "5c14a5f944b91371961548b1907802f74a4d2e5c", "lessThan": "e230f0c44f011f3270680a506b19b7e84c5e8923", "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/net/wireless/mediatek/mt76/mt7921/pci.c" ], "versions": [ { "version": "5.12", "status": "affected" }, { "version": "0", "lessThan": "5.12", "status": "unaffected", "versionType": "semver" }, { "version": "5.12.4", "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": "5.12", "versionEndExcluding": "5.12.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "5.13" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/a46b536cd60c0dbd4bf767c62a8774dec52bf099" }, { "url": "https://git.kernel.org/stable/c/e230f0c44f011f3270680a506b19b7e84c5e8923" } ], "title": "mt76: mt7921: fix kernel crash when the firmware fails to download", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2021-47027", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-02-28T20:24:56.227062Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:15:24.166Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:24:39.870Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/a46b536cd60c0dbd4bf767c62a8774dec52bf099", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/e230f0c44f011f3270680a506b19b7e84c5e8923", "tags": [ "x_transferred" ] } ] } ] } }