What’s Vulnerable › Vulnerabilities

CVE-2022-1184

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-08-29 · updated 2026-10-14
• Weakness: CWE-416

Description

A use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the Linux kernel’s filesystem sub-component. This flaw allows a local attacker with a user privilege to cause a denial of service.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 20.04
• Debian Linux: 10.0, 11.0
• Linux kernel: from 2.6.12 (excl.) before 4.9.138; from 4.14 (excl.) before 4.14.283; from 4.19 (excl.) before 4.19.247; from 5.4 (excl.) before 5.4.198; from 5.10 (excl.) before 5.10.121; from 5.15 (excl.) before 5.15.46 — fixed in 4.14.283, 4.19.247, 4.9.138, 5.10.121, 5.15.46, 5.17.14
• Red Hat Enterprise Linux: 8.0, 9.0

How to fix

Upgrade to a fixed version: Linux kernel 4.14.283, 4.19.247, 4.9.138, 5.10.121. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/security/cve/CVE-2022-1184
• https://bugzilla.redhat.com/show_bug.cgi?id=2070205
• https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
• https://ubuntu.com/security/CVE-2022-1184
• https://www.debian.org/security/2022/dsa-5257
• https://access.redhat.com/security/cve/CVE-2022-1184
• https://bugzilla.redhat.com/show_bug.cgi?id=2070205
• https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
• https://ubuntu.com/security/CVE-2022-1184
• https://www.debian.org/security/2022/dsa-5257
• https://cert-portal.siemens.com/productcert/html/ssa-794697.html

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