CVE-2021-47055 Details
Description
In the Linux kernel, the following vulnerability has been resolved: mtd: require write permissions for locking and badblock ioctls MEMLOCK, MEMUNLOCK and OTPLOCK modify protection bits. Thus require write permission. Depending on the hardware MEMLOCK might even be write-once, e.g. for SPI-NOR flashes with their WP# tied to GND. OTPLOCK is always write-once. MEMSETBADBLOCK modifies the bad block table.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 1, 2024References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-667 | Improper Locking | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 4.4.233, < 4.4.269 >= 4.9.233, < 4.9.269 >= 4.14.194, < 4.14.233 >= 4.19.139, < 4.19.191 >= 5.4.58, < 5.4.119 >= 5.9, < 5.10.37 >= 5.11, < 5.11.21 >= 5.12, < 5.12.4 |
CPE
Remediation
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Change History
8 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 4, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jan 9, 2025 | Initial Analysis | [email protected] |
| Nov 21, 2024 | CVE Modified | CVE |
| May 28, 2024 | CVE Modified | kernel.org |
| May 14, 2024 | CVE Modified | kernel.org |
| Feb 29, 2024 | New CVE Received | kernel.org |