CVE-2021-47564

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

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/03e5203d2161a00afe4d97d206d2293e40b2f253	Patch
https://git.kernel.org/stable/c/5dca8eff4627315df98feec09fff9dfe3356325e	Patch
https://git.kernel.org/stable/c/e8d032507cb7912baf1d3e0af54516f823befefd	Patch
https://git.kernel.org/stable/c/03e5203d2161a00afe4d97d206d2293e40b2f253	Patch
https://git.kernel.org/stable/c/5dca8eff4627315df98feec09fff9dfe3356325e	Patch
https://git.kernel.org/stable/c/e8d032507cb7912baf1d3e0af54516f823befefd	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:5.16:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.16:rc2::::::

History

No history.

Information

Published : 2024-05-24 15:15

Updated : 2025-01-06 20:52

NVD link : CVE-2021-47564

Mitre link : CVE-2021-47564

CVE.ORG link : CVE-2021-47564

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-415

Double Free

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