What is CVE-2021-47564?

CVE-2021-47564 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2021-47564 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47564?

CVE-2021-47564 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2021-47564?

No patch is currently available for CVE-2021-47564. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-47564 actively exploited?

CVE-2021-47564 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47564

High

In the Linux kernel, the following vulnerability has been resolved: net: marvell: prestera: fix double free issue on err path fix error path handling in prestera_bridge_port_join() that cases prestera driver to crash (see below). Trace: Internal error: Oops: 96000044 [#1] SMP Modules linked in: prestera_pci prestera uio_pdrv_genirq CPU: 1 PID: 881 Comm: ip Not tainted 5.15.0 #1 pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : prestera_bridge_destroy+0x2c/0xb0 [prestera] lr : prestera_bridge_port_join+0x2cc/0x350 [prestera] sp : ffff800011a1b0f0 ... x2 : ffff000109ca6c80 x1 : dead000000000100 x0 : dead000000000122 Call trace: prestera_bridge_destroy+0x2c/0xb0 [prestera] prestera_bridge_port_join+0x2cc/0x350 [prestera] prestera_netdev_port_event.constprop.0+0x3c4/0x450 [prestera] prestera_netdev_event_handler+0xf4/0x110 [prestera] raw_notifier_call_chain+0x54/0x80 call_netdevice_notifiers_info+0x54/0xa0 __netdev_upper_dev_link+0x19c/0x380

Package Linux Kernel

Published 2024-05-24

Last modified 2025-01-06

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-415

CVE-2021-47564 is classified as CWE-415

See CWE-415 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2021-47564 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/03e5203d2161a00afe4d97d206d2293e40b2f253
Patch
Kernel patch commit
https://git.kernel.org/stable/c/5dca8eff4627315df98feec09fff9dfe3356325e
Patch
Kernel patch commit
https://git.kernel.org/stable/c/e8d032507cb7912baf1d3e0af54516f823befefd
Patch

Details

CVE ID CVE-2021-47564

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-05-24

Modified 2025-01-06

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-47564?

CVE-2021-47564 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2021-47564 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47564?

CVE-2021-47564 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2021-47564?

No patch is currently available for CVE-2021-47564. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-47564 actively exploited?

No — CVE-2021-47564 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.