CVE-2021-47055
Apache Linux Kernel Memory Access Permissions Denial of Service
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.
INFO
Published Date :
Feb. 29, 2024, 11:15 p.m.
Last Modified :
March 1, 2024, 2:04 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47055.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2021-47055 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47055 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 29, 2024
Action Type Old Value New Value Added 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. Added Reference Linux https://git.kernel.org/stable/c/f4d28d8b9b0e7c4ae04214b8d7e0b0466ec6bcaf [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/9625b00cac6630479c0ff4b9fafa88bee636e1f0 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/f73b29819c6314c0ba8b7d5892dfb03487424bee [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/75ed985bd6c8ac1d4e673e93ea9d96c9908c1d37 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/5880afefe0cb9b2d5e801816acd58bfe91a96981 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/7b6552719c0ccbbea29dde4be141da54fdb5877e [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/077259f5e777c3c8821f6b41dee709fcda27306b [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/a08799d3e8c8088640956237c183f83463c39668 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/1e97743fd180981bef5f01402342bb54bf1c6366 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47055 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47055
weaknesses.