CVE-2022-32250 — Use After Free in Kernel

CWE-416 — Use After FreeCWE-843 — Type ConfusionCWE-1025 — Comparison Using Wrong Factors20 documents10 sources
Severity
7.8HIGHNVD
EPSS
1.9%
top 16.84%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
10
Linux KernelDebian LinuxCanonical Ubuntu Linux+7 more
Timeline
PublishedJun 2
Latest updateOct 25

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages8 packages

▶NVDlinux/linux_kernel4.1 — 4.14.316+13
▶Debianlinux/linux_kernel< 5.10.127-2+7
▶debiandebian/linux< linux 5.18.2-1 (bookworm)+1

Also affects: Debian Linux 10.0, 11.0, 9.0, Ubuntu Linux 14.04, 16.04, 18.04, 20.04, 22.04, Fedora 35, 36

Patches

Patch: www.openwall.com ↗Patch: www.openwall.com ↗Patch: www.openwall.com ↗

🔴Vulnerability Details

5
GHSA
GHSA-9v26-h3ph-p8v7: An issue was discovered in the Linux kernel through 5↗2022-07-05
▶
OSV
CVE-2022-34918: An issue was discovered in the Linux kernel through 5↗2022-07-04
▶
GHSA
GHSA-rv6g-4442-j26r: net/netfilter/nf_tables_api↗2022-06-03
▶
OSV
CVE-2022-32250: net/netfilter/nf_tables_api↗2022-06-02
▶
VulnCheck
Linux Kernel Access of Resource Using Incompatible Type ('Type Confusion')↗2022
▶

📋Vendor Advisories

10
CISA ICS
Siemens SCALANCE XCM-/XRM-300↗2024-02-15
▶
Palo Alto
PAN-SA-2024-0001 Informational Bulletin: Impact of OSS CVEs in PAN-OS↗2024-02-14
▶
CISA ICS
Siemens SIMATIC S7-1500 TM MFP Linux Kernel↗2023-06-15
▶
Microsoft
An issue was discovered in the Linux kernel through 5.18.9. A type confusion bug in nft_set_elem_init (leading to a buffer overflow) could be used by a local attacker to escalate privileges a differen↗2022-07-12
▶
Red Hat
kernel: heap overflow in nft_set_elem_init()↗2022-07-02
▶

📄Research Papers

3
arXiv
PortGPT: Towards Automated Backporting Using Large Language Models↗2025-10-25
▶
arXiv
KernJC: Automated Vulnerable Environment Generation for Linux Kernel Vulnerabilities↗2024-09-24
▶
arXiv
S2malloc: Statistically Secure Allocator for Use-After-Free Protection And More↗2024-05-29
▶