CVE-2021-47019

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47019
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

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/b13cbc536990ff609afa878b6211cd6f6265ba60 Patch
https://git.kernel.org/stable/c/fe3fccde8870764ba3e60610774bd7bc9f8faeff Patch
https://git.kernel.org/stable/c/b13cbc536990ff609afa878b6211cd6f6265ba60 Patch
https://git.kernel.org/stable/c/fe3fccde8870764ba3e60610774bd7bc9f8faeff Patch
Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

08 Jan 2025, 17:01

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE NVD-CWE-noinfo
References () https://git.kernel.org/stable/c/b13cbc536990ff609afa878b6211cd6f6265ba60 - () https://git.kernel.org/stable/c/b13cbc536990ff609afa878b6211cd6f6265ba60 - Patch
References () https://git.kernel.org/stable/c/fe3fccde8870764ba3e60610774bd7bc9f8faeff - () https://git.kernel.org/stable/c/fe3fccde8870764ba3e60610774bd7bc9f8faeff - Patch
First Time Linux
Linux linux Kernel

21 Nov 2024, 06:35

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/b13cbc536990ff609afa878b6211cd6f6265ba60 - () https://git.kernel.org/stable/c/b13cbc536990ff609afa878b6211cd6f6265ba60 -
References () https://git.kernel.org/stable/c/fe3fccde8870764ba3e60610774bd7bc9f8faeff - () https://git.kernel.org/stable/c/fe3fccde8870764ba3e60610774bd7bc9f8faeff -
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mt76: mt7921: corrige un posible acceso no válido al registro. Deshabilite la interrupción y la sincronización de los controladores irq pendientes para garantizar que el tasklet irq no se programe después de la suspensión para evitar el posible acceso no válido al registro. actúa cuando el controlador pcie del host está suspendido. [17932.910534] mt7921e 0000:01:00.0: pci_pm_suspend+0x0/0x22c devolvió 0 después de 21375 usos [17932.910590] pcieport 0000:00:00.0: llamando a pci_pm_suspend+0x0/0x22c @ 18565, padre: pci0000:00 [17932.910602] pcieport 0000: 00:00.0: pci_pm_suspend+0x0/0x22c devolvió 0 después de 8 usos [17932.910671] mtk-pcie 11230000.pcie: llamando a platform_pm_suspend+0x0/0x60 @ 22783, padre: soc [17932.910674] mtk-pcie 11230 000.pcie: plataforma_pm_suspend+0x0/ 0x60 devolvió 0 después de 0 usos... 17933.615352] x1: 00000000000d4200 x0: ffffff8269ca2300 [17933.620666] Rastreo de llamadas: [17933.623127] mt76_mmio_rr+0x28/0xf0 [mt76] [1 7933.627234] 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 [17933.648 082] irq_exit+0xa8/0xac [17933.651224] planificador_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] c puidle_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] Código: aa0003f5 d5032 01f f953eaa8 8b344108 (b9400113) [17933.697373] ---[ final de seguimiento a24b8e26ffbda3c5 ]- -- [17933.767846] Pánico del kernel: no se sincroniza: excepción fatal en la interrupción

28 Feb 2024, 09:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-02-28 09:15

Updated : 2025-01-08 17:01

NVD link : CVE-2021-47019

Mitre link : CVE-2021-47019

CVE.ORG link : CVE-2021-47019

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo