5.5

CVE-2021-47612: nfc: fix segfault in nfc_genl_dump_devices_done

Modified
AliasesUBUNTU-CVE-2021-47612DEBIAN-CVE-2021-47612
Published 19-06-2024Last modified 11-05-2026

Vulnerability summary

CVE-2021-47612 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 13.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.22%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 9 · Related 9
SUSE-SU-2024:2362-1SUSE-SU-2024:2372-1SUSE-SU-2024:2384-1SUSE-SU-2024:2394-1SUSE-SU-2024:2902-1SUSE-SU-2024:2929-1

Timeline

  1. 19-06-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability 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

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.22% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu89 products
  • linuxAll versions (No fix recorded) | < 4.15.0-169.177 | < 5.4.0-105.119
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1121.129 | < 5.4.0-1069.73
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < ea55b3797878752aa076b118afb727dcf79cac34 | ≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < 214af18abbe39db05beb305b2d11e87d09a6529c | ≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < 6644989642844de830f9b072cd65c553cb55946c | ≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < 2a8845b9603c545fddd17862282dc4c4ce0971e3 | ≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < d731ecc6f2eaec68f4ad1542283bbc7d07bd0112 | ≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < c602863ad28ec86794cb4ab4edea5324f555f181 | ≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < d89e4211b51752daf063d638af50abed2fd5f96d | ≥ 4d12b8b129f170d0fc3188de1e51a2a1b0f87730, < fd79a0cbf0b2e34bcc45b13acf962e2032a82203 | 3.1
  • 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
Debian1 product
  • linux< 5.15.15-1

3 vendors · 92 products

References

12 links
Show all 12 references