CVE-2021-47055
mtd: require write permissions for locking and badblock ioctls
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
En el kernel de Linux se ha solucionado la siguiente vulnerabilidad: mtd: requiere permisos de escritura para bloqueo y badblock ioctls MEMLOCK, MEMUNLOCK y OTPLOCK modifican los bits de protección. Por lo tanto, requiere permiso de escritura. Dependiendo del hardware, MEMLOCK podría incluso ser de escritura única, por ejemplo, para flashes SPI-NOR con su WP# vinculado a GND. OTPLOCK siempre se escribe una vez. MEMSETBADBLOCK modifica la tabla de bloques defectuosos.
A flaw was found in the Linux Kernel, requiring write permissions for locking and badblock ioctls, as they modify protection bits.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-02-29 CVE Reserved
- 2024-02-29 CVE Published
- 2024-03-01 EPSS Updated
- 2024-12-19 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (19)
URL | Tag | Source |
---|---|---|
https://git.kernel.org/stable/c/1c9f9125892a43901438bf704ada6b7019e2a884 | Vuln. Introduced | |
https://git.kernel.org/stable/c/583d42400532fbd6228b0254d7c732b771e4750d | Vuln. Introduced | |
https://git.kernel.org/stable/c/389c74c218d3b182e9cd767e98cee0e0fd0dabaa | Vuln. Introduced | |
https://git.kernel.org/stable/c/ab1a602a9cea98aa37b2e6851b168d2a2633a58d | Vuln. Introduced | |
https://git.kernel.org/stable/c/9a53e8bd59d9f070505e51d3fd19606a270e6b93 | Vuln. Introduced | |
https://git.kernel.org/stable/c/f7e6b19bc76471ba03725fe58e0c218a3d6266c3 | Vuln. Introduced | |
https://git.kernel.org/stable/c/36a8b2f49235e63ab3f901fe12e1b6732f075c2e | Vuln. Introduced | |
https://git.kernel.org/stable/c/eb3d82abc335624a5e8ecfb75aba0b684e2dc4db | Vuln. Introduced |
URL | Date | SRC |
---|
URL | Date | SRC |
---|---|---|
https://access.redhat.com/security/cve/CVE-2021-47055 | 2024-06-05 | |
https://bugzilla.redhat.com/show_bug.cgi?id=2267185 | 2024-06-05 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.4.233 < 4.4.269 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.4.233 < 4.4.269" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.9.233 < 4.9.269 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.9.233 < 4.9.269" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.14.194 < 4.14.233 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14.194 < 4.14.233" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.19.139 < 4.19.191 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.19.139 < 4.19.191" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.4.58 < 5.4.119 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.4.58 < 5.4.119" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.9 < 5.10.37 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.9 < 5.10.37" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.9 < 5.11.21 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.9 < 5.11.21" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.9 < 5.12.4 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.9 < 5.12.4" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.9 < 5.13 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.9 < 5.13" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.7.15 Search vendor "Linux" for product "Linux Kernel" and version "5.7.15" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.8.1 Search vendor "Linux" for product "Linux Kernel" and version "5.8.1" | en |
Affected
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