CVE-2021-47612

Advisory lineage Upstream: 0 Downstream: 11
Modified
Published: 19 Jun 2024, 14:58
Last modified:11 May 2026, 13:57

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.03% LOW
0% probability +0.01%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

19 Jun 2024, 14:58
Published
Vulnerability first disclosed
11 May 2026, 13:57
Last Modified
Vulnerability information updated

Description

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

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.03%• Percentile: 8%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

  • linux•linux

    ≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < ea55b3797878752aa076b118afb727dcf79cac34 | ≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < 214af18abbe39db05beb305b2d11e87d09a6529c | ≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < 6644989642844de830f9b072cd65c553cb55946c | ≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < 2a8845b9603c545fddd17862282dc4c4ce0971e3 | ≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < d731ecc6f2eaec68f4ad1542283bbc7d07bd0112 | ≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < c602863ad28ec86794cb4ab4edea5324f555f181 | ≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < d89e4211b51752daf063d638af50abed2fd5f96d | ≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < fd79a0cbf0b2e34bcc45b13acf962e2032a82203 | 3.1

  • linux•linux_kernel

    < 4.4.296 | ≥ 4.5, < 4.9.294 | ≥ 4.10, < 4.14.259 | ≥ 4.15, < 4.19.222 | ≥ 4.20, < 5.4.167 | ≥ 5.5, < 5.10.87 | ≥ 5.11, < 5.15.10

References (8)