In the Linux kernel, the following vulnerability has been resolved:

nfc: fix segfault in nfc_genl_dump_devices_done

When kmalloc in nfc_genl_dump_devices() fails then
nfc_genl_dump_devices_done() segfaults as below

KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 25 Comm: kworker/0:1 Not tainted 5.16.0-rc4-01180-g2a987e65025e-dirty #5
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-6.fc35 04/01/2014
Workqueue: events netlink_sock_destruct_work
RIP: 0010:klist_iter_exit+0x26/0x80
Call Trace:
<TASK>
class_dev_iter_exit+0x15/0x20
nfc_genl_dump_devices_done+0x3b/0x50
genl_lock_done+0x84/0xd0
netlink_sock_destruct+0x8f/0x270
__sk_destruct+0x64/0x3b0
sk_destruct+0xa8/0xd0
__sk_free+0x2e8/0x3d0
sk_free+0x51/0x90
netlink_sock_destruct_work+0x1c/0x20
process_one_work+0x411/0x710
worker_thread+0x6fd/0xa80

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00015.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

No data.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/214af18abbe39db05beb305b2d11e87d09a6529c cve-icon cve-icon
https://git.kernel.org/stable/c/2a8845b9603c545fddd17862282dc4c4ce0971e3 cve-icon cve-icon
https://git.kernel.org/stable/c/6644989642844de830f9b072cd65c553cb55946c cve-icon cve-icon
https://git.kernel.org/stable/c/c602863ad28ec86794cb4ab4edea5324f555f181 cve-icon cve-icon
https://git.kernel.org/stable/c/d731ecc6f2eaec68f4ad1542283bbc7d07bd0112 cve-icon cve-icon
https://git.kernel.org/stable/c/d89e4211b51752daf063d638af50abed2fd5f96d cve-icon cve-icon
https://git.kernel.org/stable/c/ea55b3797878752aa076b118afb727dcf79cac34 cve-icon cve-icon
https://git.kernel.org/stable/c/fd79a0cbf0b2e34bcc45b13acf962e2032a82203 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2024061908-CVE-2021-47612-1c98@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2021-47612 cve-icon
https://www.cve.org/CVERecord?id=CVE-2021-47612 cve-icon
History

Tue, 05 Nov 2024 08:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 27 Aug 2024 16:30:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-05-04T07:14:53.097Z

Reserved: 2024-06-19T14:55:32.795Z

Link: CVE-2021-47612

cve-icon Vulnrichment

Updated: 2024-08-04T05:47:40.566Z

cve-icon NVD

Status : Modified

Published: 2024-06-19T15:15:55.750

Modified: 2024-11-21T06:36:40.130

Link: CVE-2021-47612

cve-icon Redhat

Severity : Low

Publid Date: 2024-06-19T00:00:00Z

Links: CVE-2021-47612 - Bugzilla

cve-icon OpenCVE Enrichment

No data.