CVE-2021-46920
dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback
Severity Score
5.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track
*SSVC
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback
Current code blindly writes over the SWERR and the OVERFLOW bits. Write
back the bits actually read instead so the driver avoids clobbering the
OVERFLOW bit that comes after the register is read.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dmaengine: idxd: corrige el problema del bit de desbordamiento SWERR en la reescritura El código actual escribe ciegamente sobre los bits SWERR y OVERFLOW. En su lugar, vuelva a escribir los bits realmente leídos para que el controlador evite dañar el bit OVERFLOW que viene después de leer el registro.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2024-02-25 CVE Reserved
- 2024-02-27 CVE Published
- 2024-02-27 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (4)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/bfe1d56091c1a404b3d4ce7e9809d745fc4453bb | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
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" | >= 5.6 < 5.10.32 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.6 < 5.10.32" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.6 < 5.11.16 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.6 < 5.11.16" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.6 < 5.12 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.6 < 5.12" | en |
Affected
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