CVE-2021-47019— mt76: mt7921: fix possible invalid register access
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I. Basic Information for CVE-2021-47019
Vulnerability Information
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Vulnerability Title
mt76: mt7921: fix possible invalid register access
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mt76: mt7921: fix possible invalid register access Disable the interrupt and synchronze for the pending irq handlers to ensure the irq tasklet is not being scheduled after the suspend to avoid the possible invalid register access acts when the host pcie controller is suspended. [17932.910534] mt7921e 0000:01:00.0: pci_pm_suspend+0x0/0x22c returned 0 after 21375 usecs [17932.910590] pcieport 0000:00:00.0: calling pci_pm_suspend+0x0/0x22c @ 18565, parent: pci0000:00 [17932.910602] pcieport 0000:00:00.0: pci_pm_suspend+0x0/0x22c returned 0 after 8 usecs [17932.910671] mtk-pcie 11230000.pcie: calling platform_pm_suspend+0x0/0x60 @ 22783, parent: soc [17932.910674] mtk-pcie 11230000.pcie: platform_pm_suspend+0x0/0x60 returned 0 after 0 usecs ... 17933.615352] x1 : 00000000000d4200 x0 : ffffff8269ca2300 [17933.620666] Call trace: [17933.623127] mt76_mmio_rr+0x28/0xf0 [mt76] [17933.627234] mt7921_rr+0x38/0x44 [mt7921e] [17933.631339] mt7921_irq_tasklet+0x54/0x1d8 [mt7921e] [17933.636309] tasklet_action_common+0x12c/0x16c [17933.640754] tasklet_action+0x24/0x2c [17933.644418] __do_softirq+0x16c/0x344 [17933.648082] irq_exit+0xa8/0xac [17933.651224] scheduler_ipi+0xd4/0x148 [17933.654890] handle_IPI+0x164/0x2d4 [17933.658379] gic_handle_irq+0x140/0x178 [17933.662216] el1_irq+0xb8/0x180 [17933.665361] cpuidle_enter_state+0xf8/0x204 [17933.669544] cpuidle_enter+0x38/0x4c [17933.673122] do_idle+0x1a4/0x2a8 [17933.676352] cpu_startup_entry+0x24/0x28 [17933.680276] rest_init+0xd4/0xe0 [17933.683508] arch_call_rest_init+0x10/0x18 [17933.687606] start_kernel+0x340/0x3b4 [17933.691279] Code: aa0003f5 d503201f f953eaa8 8b344108 (b9400113) [17933.697373] ---[ end trace a24b8e26ffbda3c5 ]--- [17933.767846] Kernel panic - not syncing: Fatal exception in interrupt
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于主机 PCIe 控制器挂起时会出现无效的寄存器访问行为。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2021-47019
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Same Patch Batch · Linux · 2024-02-28 · 86 CVEs total
| CVE-2021-46995 | can: mcp251xfd: mcp251xfd_probe(): fix an error pointer dereference in probe | |
| CVE-2021-46998 | ethernet:enic: Fix a use after free bug in enic_hard_start_xmit | |
| CVE-2021-46999 | sctp: do asoc update earlier in sctp_sf_do_dupcook_a | |
| CVE-2021-47001 | xprtrdma: Fix cwnd update ordering | |
| CVE-2021-47004 | f2fs: fix to avoid touching checkpointed data in get_victim() | |
| CVE-2021-47003 | dmaengine: idxd: Fix potential null dereference on pointer status | |
| CVE-2021-47005 | PCI: endpoint: Fix NULL pointer dereference for ->get_features() | |
| CVE-2021-47007 | f2fs: fix panic during f2fs_resize_fs() | |
| CVE-2021-47006 | ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook | |
| CVE-2021-47002 | SUNRPC: Fix null pointer dereference in svc_rqst_free() | |
| CVE-2021-46997 | arm64: entry: always set GIC_PRIO_PSR_I_SET during entry | |
| CVE-2021-46996 | netfilter: nftables: Fix a memleak from userdata error path in new objects | |
| CVE-2021-46994 | can: mcp251x: fix resume from sleep before interface was brought up | |
| CVE-2021-46992 | netfilter: nftables: avoid overflows in nft_hash_buckets() | |
| CVE-2021-46993 | sched: Fix out-of-bound access in uclamp | |
| CVE-2021-46990 | powerpc/64s: Fix crashes when toggling entry flush barrier | |
| CVE-2021-46991 | i40e: Fix use-after-free in i40e_client_subtask() | |
| CVE-2021-46989 | hfsplus: prevent corruption in shrinking truncate | |
| CVE-2021-46987 | btrfs: fix deadlock when cloning inline extents and using qgroups | |
| CVE-2021-46988 | userfaultfd: release page in error path to avoid BUG_ON |
Showing top 20 of 86 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2021-47019
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