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CVE-2022-32250

27
FAUCET Score

CVE-2022-32250 is a high-severity use-after-free vulnerability in the Linux kernel's netfilter component (nf_tables_api.c), affecting versions through 5.18.1, including Debian, Fedora, and NetApp products. A local attacker with user/net namespace creation privileges can exploit this flaw to achieve root privilege escalation. With a CVSS score of 7.8, it has low attack complexity and can lead to complete compromise of confidentiality, integrity, and availability. While not listed on the KEV catalog or having public exploits in Metasploit or ExploitDB, there is community discussion, including a Reddit post detailing exploitation against Ubuntu 22.04 and kernel 5.15, indicating active research and potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.1, < 4.9.318CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.10, < 4.14.283CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.15, < 4.19.247CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.20, < 5.4.198CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.120CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.91%
Probability of exploitation in next 30 days
EPSS Percentile
85.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0291 is in the 97th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (34)

microsoftpatch availablevia msrc
Product: 18685-16820Fixed in: -
microsoftpatch availablevia msrc
Product: 18692-16823Fixed in: 5.15.45.1-2
microsoftpatch availablevia msrc
Product: cm1 kernel 5.10.123.1-1 on CBL Mariner 1.0Fixed in: -
microsoftpatch availablevia msrc
Product: cbl2 kernel 5.15.45.1-2 on CBL Mariner 2.0Fixed in: 5.15.45.1-2
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.3 Advanced Update SupportFixed in: kernel-0:3.10.0-514.104.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Advanced Update SupportFixed in: kernel-0:3.10.0-693.104.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Advanced Update Support(Disable again in 2026 - SPRHEL-7118)Fixed in: kernel-0:3.10.0-957.95.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Telco Extended Update SupportFixed in: kernel-0:3.10.0-957.95.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Update Services for SAP SolutionsFixed in: kernel-0:3.10.0-957.95.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Update Services for SAP SolutionsFixed in: kpatch-patch
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.7 Advanced Update SupportFixed in: kernel-0:3.10.0-1062.68.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.7 Telco Extended Update SupportFixed in: kernel-0:3.10.0-1062.68.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.7 Update Services for SAP SolutionsFixed in: kernel-0:3.10.0-1062.68.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.7 Update Services for SAP SolutionsFixed in: kpatch-patch
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt-0:4.18.0-372.19.1.rt7.176.el8_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-372.19.1.el8_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kpatch-patch
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsFixed in: kernel-0:4.18.0-147.70.1.el8_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsFixed in: kpatch-patch
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.2 Extended Update SupportFixed in: kernel-rt-0:4.18.0-193.87.1.rt13.137.el8_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.2 Extended Update SupportFixed in: kernel-0:4.18.0-193.87.1.el8_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.2 Extended Update SupportFixed in: kpatch-patch
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Extended Update SupportFixed in: kernel-rt-0:4.18.0-305.57.1.rt7.129.el8_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Extended Update SupportFixed in: kernel-0:4.18.0-305.57.1.el8_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Extended Update SupportFixed in: kpatch-patch
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-70.17.1.el9_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt-0:5.14.0-70.17.1.rt21.89.el9_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kpatch-patch
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: redhat-virtualization-host-0:4.3.23-20220622.0.el7_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-372.19.1.el8_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 8Fixed in: redhat-virtualization-host-0:4.5.2-202209140405_8.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-1160.71.1.rt56.1212.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kpatch-patch
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-1160.71.1.el7
View patch

Vendor Advisories (2)

microsoft2022-Jun/CVE-2022-32250Important

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.

Jun 14, 2022
redhatCVE-2022-32250Important

kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root

May 31, 2022

References

blog.theori.io / research/CVE-2022-32250-linux-kernel-lpe-2022
ExploitThird Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
github.com / theori-io/CVE-2022-32250-exploit
ExploitThird Party Advisory
git.kernel.org / pub/scm/linux/kernel/git/netdev/net.git/commit/net/netfilter
Mailing ListPatchVendor Advisory
lists.debian.org / debian-lts-announce/2022/07/msg00000.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/MO6Y3TC4WUUNKRP7OQA26OVTZTPCS6F2
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/UIZTJOJCVVEJVOQSCHE6IJQKMPISHQ5L
security.netapp.com / advisory/ntap-20220715-0005
Third Party Advisory
debian.org / security/2022/dsa-5161
Third Party Advisory
debian.org / security/2022/dsa-5173
Third Party Advisory
openwall.com / lists/oss-security/2022/05/31/1
ExploitMailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2022/06/03/1
ExploitMailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2022/06/04/1
Mailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2022/06/20/1
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2022/07/03/5
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2022/07/03/6
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2022/08/25/1
Mailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2022/09/02/9
Mailing ListThird Party Advisory