CVEvulnerability

CVE-2021-47612

5.5 MEDIUM Published 2024-06-19 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2024-06-19
Last modified
2026-06-17
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

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

Affected configurations

• linux linux kernel (< 4.4.296) • linux linux kernel (>= 4.5 < 4.9.294) • linux linux kernel (>= 4.10 < 4.14.259) • linux linux kernel (>= 4.15 < 4.19.222) • linux linux kernel (>= 4.20 < 5.4.167) • linux linux kernel (>= 5.5 < 5.10.87) • linux linux kernel (>= 5.11 < 5.15.10)

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References