{"dataType":"CVE_RECORD","dataVersion":"5.1","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":"2025-05-04T07:02:34.973Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:02:34.973Z"},"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"]}]}]}}