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Fencer Vulns
medium 4.1

CVE-2022-1974 json

A use-after-free flaw was found in the Linux kernel's NFC core functionality due to a race condition between kobject creation and delete.

published 2022-08-31 4 y ago modified 2026-11-02 6 d ago also EUVD-2022-25242

cvss
4.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 4%
public exploits
0
none known

Summary

A use-after-free flaw was found in the Linux kernel's NFC core functionality due to a race condition between kobject creation and delete. This vulnerability allows a local attacker with CAP_NET_ADMIN privilege to leak kernel information.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 5.17.11-1

debian advisories DEBIAN-CVE-2022-1974

  • linux Ubuntu 18.04 LTS 4.15.0-192.203
  • linux Ubuntu 20.04 LTS 5.4.0-126.142
  • linux Ubuntu 22.04 LTS 5.15.0-47.51
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1140.151
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1085.92
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1019.23
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1089.97
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1017.23

ubuntu advisories UBUNTU-CVE-2022-1974

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-rt SLE Real Time 12 SP5 4.12.14-10.94.1
  • kernel-syms-rt SLE Real Time 12 SP5 4.12.14-10.94.1
  • kernel-rt_debug SLE Real Time 12 SP5 4.12.14-10.94.1
  • kernel-source-rt SLE Real Time 12 SP5 4.12.14-10.94.1
  • kernel-azure SLE Module for Public Cloud 15 SP4, openSUSE Leap 15.4 5.14.21-150400.14.7.1
  • kernel-syms-azure SLE Module for Public Cloud 15 SP4, openSUSE Leap 15.4 5.14.21-150400.14.7.1
  • kernel-source-azure SLE Module for Public Cloud 15 SP4, openSUSE Leap 15.4 5.14.21-150400.14.7.1
  • dtb-aarch64 openSUSE Leap 15.4 5.14.21-150400.24.11.1

suse advisories SUSE-SU-2022:2629-1SUSE-SU-2022:2615-1SUSE-SU-2022:2520-1SUSE-SU-2022:2393-1SUSE-SU-2022:2177-1SUSE-SU-2022:2173-1

  • kernel-rt openSUSE Leap Micro 5.2 5.3.18-150300.93.1
  • kernel-default openSUSE Leap Micro 5.2 5.3.18-150300.59.76.1
  • kernel-default-base openSUSE Leap Micro 5.2 5.3.18-150300.59.76.1.150300.18.45.2

opensuse advisories openSUSE-SU-2022:2177-1openSUSE-SU-2022:2173-1

  • linux Arch Linux 5.18.2-1
  • linux-hardened Arch Linux 5.17.13.hardened1-1
  • linux-zen Arch Linux 5.18.2.zen1-1
  • linux-lts Arch Linux 5.15.45-1

arch linux advisories AVG-2751AVG-2752AVG-2753AVG-2754

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-1974 updated cvss 6.8

kernel: use-after-free in /net/nfc/core.c causes kernel crash by simulating nfc device from user-space

  • Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more
    affected: no fix available
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-23-075-01 updated cvss 4.1

Siemens SCALANCE, RUGGEDCOM Third-Party

  • Siemens RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2) <V7.2 Siemens RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2) <V7.2 Siemens SCALANCE M804PB (6GK5804-0AP00-2AA2) <V7.2 Siemens SCALANCE M812-1 ADSL-Router (Annex A) (6GK5812-1AA00-2AA2) <V7.2 Siemens SCALANCE M812-1 ADSL-Router (Annex B) (6GK5812-1BA00-2AA2) <V7.2 Siemens SCALANCE M816-1 ADSL-Router (Annex A) (6GK5816-1AA00-2AA2) <V7.2
    +14 more products
    Siemens SCALANCE M816-1 ADSL-Router (Annex B) (6GK5816-1BA00-2AA2) <V7.2 Siemens SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2) <V7.2 Siemens SCALANCE M874-2 (6GK5874-2AA00-2AA2) <V7.2 Siemens SCALANCE M874-3 (6GK5874-3AA00-2AA2) <V7.2 Siemens SCALANCE M876-3 (EVDO) (6GK5876-3AA02-2BA2) <V7.2 Siemens SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2) <V7.2 Siemens SCALANCE M876-4 (6GK5876-4AA10-2BA2) <V7.2 Siemens SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2) <V7.2 Siemens SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2) <V7.2 Siemens SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1) <V7.2 Siemens SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1) <V7.2 Siemens SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1) <V7.2 Siemens SCALANCE S615 (6GK5615-0AA00-2AA2) <V7.2 Siemens SCALANCE S615 EEC (6GK5615-0AA01-2AA2) <V7.2
    affected: fixed in V7.2 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
31 d ago

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 4.1 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N

Affected products

  • n/a Linux kernel

Classification

Weakness
  • CWE-416 Use After Free
  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.