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CVE-2021-47055

UNKNOWN
Published 2024-02-29T22:37:30.071Z
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No CVSS data available

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Linux

Linux

Affected Versions:

1c9f9125892a43901438bf704ada6b7019e2a884 583d42400532fbd6228b0254d7c732b771e4750d 389c74c218d3b182e9cd767e98cee0e0fd0dabaa ab1a602a9cea98aa37b2e6851b168d2a2633a58d 9a53e8bd59d9f070505e51d3fd19606a270e6b93 f7e6b19bc76471ba03725fe58e0c218a3d6266c3 f7e6b19bc76471ba03725fe58e0c218a3d6266c3 f7e6b19bc76471ba03725fe58e0c218a3d6266c3 f7e6b19bc76471ba03725fe58e0c218a3d6266c3 36a8b2f49235e63ab3f901fe12e1b6732f075c2e eb3d82abc335624a5e8ecfb75aba0b684e2dc4db
Linux

Linux

Affected Versions:

5.9 0 4.4.269 4.9.269 4.14.233 4.19.191 5.4.119 5.10.37 5.11.21 5.12.4 5.13

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-x2mc-jwgp-h2fq

Advisory Details

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.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-47055
WEB https://git.kernel.org/stable/c/077259f5e777c3c8821f6b41dee709fcda27306b
WEB https://git.kernel.org/stable/c/1e97743fd180981bef5f01402342bb54bf1c6366
WEB https://git.kernel.org/stable/c/5880afefe0cb9b2d5e801816acd58bfe91a96981
WEB https://git.kernel.org/stable/c/75ed985bd6c8ac1d4e673e93ea9d96c9908c1d37
WEB https://git.kernel.org/stable/c/7b6552719c0ccbbea29dde4be141da54fdb5877e
WEB https://git.kernel.org/stable/c/9625b00cac6630479c0ff4b9fafa88bee636e1f0
WEB https://git.kernel.org/stable/c/a08799d3e8c8088640956237c183f83463c39668
WEB https://git.kernel.org/stable/c/f4d28d8b9b0e7c4ae04214b8d7e0b0466ec6bcaf
WEB https://git.kernel.org/stable/c/f73b29819c6314c0ba8b7d5892dfb03487424bee

Advisory provided by GitHub Security Advisory Database. Published: March 1, 2024, Modified: January 9, 2025

References

https://git.kernel.org/stable/c/f4d28d8b9b0e7c4ae04214b8d7e0b0466ec6bcaf
https://git.kernel.org/stable/c/9625b00cac6630479c0ff4b9fafa88bee636e1f0
https://git.kernel.org/stable/c/f73b29819c6314c0ba8b7d5892dfb03487424bee
https://git.kernel.org/stable/c/75ed985bd6c8ac1d4e673e93ea9d96c9908c1d37
https://git.kernel.org/stable/c/5880afefe0cb9b2d5e801816acd58bfe91a96981
https://git.kernel.org/stable/c/7b6552719c0ccbbea29dde4be141da54fdb5877e
https://git.kernel.org/stable/c/077259f5e777c3c8821f6b41dee709fcda27306b
https://git.kernel.org/stable/c/a08799d3e8c8088640956237c183f83463c39668
https://git.kernel.org/stable/c/1e97743fd180981bef5f01402342bb54bf1c6366
Published: 2024-02-29T22:37:30.071Z
Last Modified: 2025-05-04T12:40:58.929Z
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