A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.
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This medium-severity CVE scores 4.7 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 95% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.
February 18, 2022
November 21, 2024
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | linux-image-unsigned-5.13.0-1008-gcp (5.13.0-1008.9) @ impish | 2026-05-26 | ubuntu |
| ubuntu | linux-virtual-hwe-16.04-edge (4.15.0.166.158) @ xenial | 2026-05-26 | ubuntu |
| ubuntu | linux-image-5.13.0-1026-oem (5.13.0-1026.32) @ focal | 2026-05-26 | ubuntu |
| ubuntu | linux-modules-extra-5.4.0-1059-gcp (5.4.0-1059.63) @ focal | 2026-05-26 | ubuntu |
| ubuntu | linux-image-lowlatency (4.4.0.242.248) @ xenial | 2026-05-26 | ubuntu |
| redhat | kernel-rt-0:4.18.0-348.7.1.rt7.137.el8_5 | 2021-12-21 | redhat |
| redhat | kernel-0:4.18.0-348.7.1.el8_5 | 2021-12-21 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.
RHSA-2021:5227 — Moderate
RHSA-2021:5241 — Moderate
Linux kernel vulnerabilities
Linux kernel vulnerabilities
Linux kernel vulnerabilities
Linux kernel (OEM) vulnerabilities
Linux kernel vulnerabilities
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msrc · redhat