CVE record · CVE-2021-47637

ubifs: Fix deadlock in concurrent rename whiteout and inode writeback

CVSS 5.5 MediumEPSS 0.0019 · 9th percentile

Published by the CVE Program (CNA: Linux) at 26 Feb 2025, 01:54 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Linux	Linux	affected 9e0a1fff8db56eaaebb74b4a3ef65f86811c4798 to before 9dddc8211430fb851ddf0b168e3a00c6f66cc185 git affected 9e0a1fff8db56eaaebb74b4a3ef65f86811c4798 to before 37bdf1ad592555ecda1d55b89f6e393e4c0589d1 git affected 9e0a1fff8db56eaaebb74b4a3ef65f86811c4798 to before 83e42a78428fc354f5e2049935b84c8d8d29b787 git affected 9e0a1fff8db56eaaebb74b4a3ef65f86811c4798 to before c58af8564a7b08757173009030b74baf4b2b762b git affected 9e0a1fff8db56eaaebb74b4a3ef65f86811c4798 to before 70e9090acc32348cedc5def0cd6d5c126efc97b9 git affected 9e0a1fff8db56eaaebb74b4a3ef65f86811c4798 to before 8b278c8dcfb565cb65eceb62a38cbf7a7c326db5 git affected 9e0a1fff8db56eaaebb74b4a3ef65f86811c4798 to before afd427048047e8efdedab30e8888044e2be5aa9c git Other versions: unaffected
Linux	Linux	affected 4.9 unaffected before 4.9 semver unaffected 4.19.238 to 4.19., inclusive semver unaffected 5.4.189 to 5.4., inclusive semver unaffected 5.10.110 to 5.10., inclusive semver unaffected 5.15.33 to 5.15., inclusive semver unaffected 5.16.19 to 5.16., inclusive semver unaffected 5.17.2 to 5.17., inclusive semver unaffected 5.18 to *, inclusive original_commit_for_fix Other versions: affected

Identifiers: CVE-2021-47637
CNA: Linux
Weakness (CWE): CWE-667
Tags: Linux kernel
CWE-667
Published: 26 Feb 2025
Updated: 11 May 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.5	Medium	3.1	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	ADP (CISA-ADP)

CISA KEV Not listed.
EPSS 0.0019, the 9th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 26 Feb 2025. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.