What is CVE-2021-47019?

CVE-2021-47019 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.12 onward and patched in 5.12.4 and 5.13. CVE-2021-47019 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47019?

CVE-2021-47019 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2021-47019?

Yes, CVE-2021-47019 has been patched. Fixed versions include 5.12.4 and 5.13. If you are running Linux kernel 5.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47019 actively exploited?

CVE-2021-47019 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47019

Medium

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

Package Linux Kernel

Published 2024-02-28

Last modified 2025-01-08

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 5.12 and later are affected. Fixed in 5.12.4, 5.13 and their respective stable series.

Affected from

≥ 5.12

Fixed in

✓ 5.12.4 5.12.x ✓ 5.13

References

2 total

Kernel Git
https://git.kernel.org/stable/c/b13cbc536990ff609afa878b6211cd6f6265ba60

Patch
Kernel Git
https://git.kernel.org/stable/c/fe3fccde8870764ba3e60610774bd7bc9f8faeff

Patch

Details

CVE ID CVE-2021-47019

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-02-28

Modified 2025-01-08

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47019?

CVE-2021-47019 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.12 onward and has been patched in 5.12.4 and 5.13. CVE-2021-47019 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47019?

CVE-2021-47019 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2021-47019?

Yes. CVE-2021-47019 has been patched. Fixed versions include 5.12.4 and 5.13. If you are running Linux kernel 5.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47019 actively exploited?

No. CVE-2021-47019 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.