HIGH

CVE-2022-32250

Q: What is CVE-2022-32250?

net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.

Q: Is CVE-2022-32250 actively exploited?

Active exploitation of CVE-2022-32250 has not been confirmed. Its EPSS score was 2.9% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-32250?

CVE-2022-32250 has a CVSS v3 base score of 7.8 (HIGH severity).

CVSS v3

7.8

HIGH

EPSS Score

2.9 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

kernelAlmaLinux:8all versions · fixed in 4.18.0-372.19.1.el8_6and 19 other packages
kernel-rtAlmaLinux:8all versions · fixed in 4.18.0-372.19.1.rt7.176.el8_6and 11 other packages

Vendor advisories

CVE-2022-32250 Red Hat Product Security1,481 products fixed
kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root
ICSA-23-166-11 CISA1 known affected
Siemens SIMATIC S7-1500 TM MFP Linux Kernel
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
SSA-794697 Siemens ProductCERT1 known affected
SSA-794697: Vulnerabilities in the Additional GNU/Linux Subsystem of the SIMATIC S7-1500 TM MFP Before V1.1
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem < V1.1
RHSA-2022:6551 Red Hat Product Security2 products fixed
Red Hat Security Advisory: Red Hat Virtualization security update
RHSA-2022:6073 Red Hat Product Security106 products fixed
Red Hat Security Advisory: kernel security update
RHSA-2022:6075 Red Hat Product Security30 products fixed
Red Hat Security Advisory: kpatch-patch security update

22 more advisories

Full record on NVD

Description

net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.

Technical details

Published: 2022-06-02

Frequently asked questions

What is CVE-2022-32250?

Is CVE-2022-32250 actively exploited?

Active exploitation of CVE-2022-32250 has not been confirmed. Its EPSS score was 2.9% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-32250?

CVE-2022-32250 has a CVSS v3 base score of 7.8 (HIGH severity).

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