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

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel
Redhat
  • Enterprise Linux

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Package CPE Advisory Released Date
Red Hat Enterprise Linux 8
kernel-rt-0:4.18.0-553.5.1.rt7.346.el8_10 cpe:/a:redhat:enterprise_linux:8::nfv RHSA-2024:3627 2024-06-05T00:00:00Z
kernel-0:4.18.0-553.5.1.el8_10 cpe:/o:redhat:enterprise_linux:8 RHSA-2024:3618 2024-06-05T00:00:00Z
References
Link Providers
https://git.kernel.org/stable/c/077259f5e777c3c8821f6b41dee709fcda27306b cve-icon cve-icon
https://git.kernel.org/stable/c/1e97743fd180981bef5f01402342bb54bf1c6366 cve-icon cve-icon
https://git.kernel.org/stable/c/5880afefe0cb9b2d5e801816acd58bfe91a96981 cve-icon cve-icon
https://git.kernel.org/stable/c/75ed985bd6c8ac1d4e673e93ea9d96c9908c1d37 cve-icon cve-icon
https://git.kernel.org/stable/c/7b6552719c0ccbbea29dde4be141da54fdb5877e cve-icon cve-icon
https://git.kernel.org/stable/c/9625b00cac6630479c0ff4b9fafa88bee636e1f0 cve-icon cve-icon
https://git.kernel.org/stable/c/a08799d3e8c8088640956237c183f83463c39668 cve-icon cve-icon
https://git.kernel.org/stable/c/f4d28d8b9b0e7c4ae04214b8d7e0b0466ec6bcaf cve-icon cve-icon
https://git.kernel.org/stable/c/f73b29819c6314c0ba8b7d5892dfb03487424bee cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2024022950-CVE-2021-47055-6927@gregkh/T/#u cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2021-47055 cve-icon
https://www.cve.org/CVERecord?id=CVE-2021-47055 cve-icon
History

Thu, 09 Jan 2025 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-667
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
Metrics cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Mon, 04 Nov 2024 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 16 Sep 2024 19:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 0.0, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:N'}

threat_severity

None

 cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'}

threat_severity

Moderate
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-02-29T22:37:30.071Z

Updated: 2024-12-19T07:34:24.689Z

Reserved: 2024-02-29T22:33:44.293Z

Link: CVE-2021-47055

cve-icon Vulnrichment

Updated: 2024-08-04T05:24:39.642Z

cve-icon NVD

Status : Analyzed

Published: 2024-02-29T23:15:07.473

Modified: 2025-01-09T15:34:43.780

Link: CVE-2021-47055

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-02-29T00:00:00Z

Links: CVE-2021-47055 - Bugzilla