CVE-2022-32250

CVE-2022-32250 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

• Severity: High (CVSS 3.x base score 7.8)
• CVSS v2: 7.2
• EPSS exploit prediction: 3% (85th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-416
• Affected product: Linux Linux Kernel
• Published: 2022-06-02
• Last modified: 2026-06-17

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.

Frequently asked questions

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.

How severe is CVE-2022-32250?

CVE-2022-32250 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-32250 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-32250?

CVE-2022-32250 primarily affects Linux Linux Kernel. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-32250?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-32250 published?

CVE-2022-32250 was published on 2022-06-02 and last updated on 2026-06-17.

References

• http://www.openwall.com/lists/oss-security/2022/06/03/1
• http://www.openwall.com/lists/oss-security/2022/06/04/1
• http://www.openwall.com/lists/oss-security/2022/06/20/1
• http://www.openwall.com/lists/oss-security/2022/07/03/5
• http://www.openwall.com/lists/oss-security/2022/07/03/6
• http://www.openwall.com/lists/oss-security/2022/08/25/1
• http://www.openwall.com/lists/oss-security/2022/09/02/9
• https://blog.theori.io/research/CVE-2022-32250-linux-kernel-lpe-2022/
• https://bugzilla.redhat.com/show_bug.cgi?id=2092427
• https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/net/netfilter?id=520778042ccca019f3ffa136dd0ca565c486cedd
• https://github.com/theori-io/CVE-2022-32250-exploit
• https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MO6Y3TC4WUUNKRP7OQA26OVTZTPCS6F2/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UIZTJOJCVVEJVOQSCHE6IJQKMPISHQ5L/
• https://security.netapp.com/advisory/ntap-20220715-0005/
• https://www.debian.org/security/2022/dsa-5161
• https://www.debian.org/security/2022/dsa-5173
• https://www.openwall.com/lists/oss-security/2022/05/31/1

Affected products (10)

• cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
• cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*

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