CVE-2021-47612

Published: Jun 19, 2024

Modified: May 11, 2026

PUBLISHED

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

Vendor	Product	Versions
Linux	Linux	affected `4d12b8b129f170d0fc3188de1e51a2a1b0f87730 - < ea55b3797878752aa076b118afb727dcf79cac34` affected `4d12b8b129f170d0fc3188de1e51a2a1b0f87730 - < 214af18abbe39db05beb305b2d11e87d09a6529c` affected `4d12b8b129f170d0fc3188de1e51a2a1b0f87730 - < 6644989642844de830f9b072cd65c553cb55946c` affected `4d12b8b129f170d0fc3188de1e51a2a1b0f87730 - < 2a8845b9603c545fddd17862282dc4c4ce0971e3` affected `4d12b8b129f170d0fc3188de1e51a2a1b0f87730 - < d731ecc6f2eaec68f4ad1542283bbc7d07bd0112` +3 more versions
Linux	Linux	affected `3.1` unaffected `0 - < 3.1` unaffected `4.4.296 - <= 4.4.` unaffected `4.9.294 - <= 4.9.` unaffected `4.14.259 - <= 4.14.*` +5 more versions