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Vulnerability Details :

CVE-2021-46920

Summary
Assigner-Linux
Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published At-27 Feb, 2024 | 06:53
Updated At-04 May, 2025 | 07:00
Rejected At-
Credits

dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:Linux
Assigner Org ID:416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published At:27 Feb, 2024 | 06:53
Updated At:04 May, 2025 | 07:00
Rejected At:
▼CVE Numbering Authority (CNA)
dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback

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.

Affected Products
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • drivers/dma/idxd/irq.c
Default Status
unaffected
Versions
Affected
  • From bfe1d56091c1a404b3d4ce7e9809d745fc4453bb before a5ad12d5d69c63af289a37f05187a0c6fe93553d (git)
  • From bfe1d56091c1a404b3d4ce7e9809d745fc4453bb before 02981a44a0e402089775416371bd2e0c935685f8 (git)
  • From bfe1d56091c1a404b3d4ce7e9809d745fc4453bb before ea941ac294d75d0ace50797aebf0056f6f8f7a7f (git)
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • drivers/dma/idxd/irq.c
Default Status
affected
Versions
Affected
  • 5.6
Unaffected
  • From 0 before 5.6 (semver)
  • From 5.10.32 through 5.10.* (semver)
  • From 5.11.16 through 5.11.* (semver)
  • From 5.12 through * (original_commit_for_fix)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553d
N/A
https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8
N/A
https://git.kernel.org/stable/c/ea941ac294d75d0ace50797aebf0056f6f8f7a7f
N/A
Hyperlink: https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553d
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/ea941ac294d75d0ace50797aebf0056f6f8f7a7f
Resource: N/A
▼Authorized Data Publishers (ADP)
1. CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-noinfoCWE-noinfo Not enough information
Type: CWE
CWE ID: CWE-noinfo
Description: CWE-noinfo Not enough information
Metrics
VersionBase scoreBase severityVector
3.15.5MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Version: 3.1
Base score: 5.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
2. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553d
x_transferred
https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8
x_transferred
https://git.kernel.org/stable/c/ea941ac294d75d0ace50797aebf0056f6f8f7a7f
x_transferred
Hyperlink: https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553d
Resource:
x_transferred
Hyperlink: https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8
Resource:
x_transferred
Hyperlink: https://git.kernel.org/stable/c/ea941ac294d75d0ace50797aebf0056f6f8f7a7f
Resource:
x_transferred
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published At:27 Feb, 2024 | 07:15
Updated At:29 Oct, 2024 | 14:35

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.15.5MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Secondary3.15.5MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Type: Primary
Version: 3.1
Base score: 5.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Type: Secondary
Version: 3.1
Base score: 5.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CPE Matches
Linux Kernel Organization, Inc
linux
>>linux_kernel>>Versions from 5.6.0(inclusive) to 5.10.32(exclusive)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Linux Kernel Organization, Inc
linux
>>linux_kernel>>Versions from 5.11.0(inclusive) to 5.11.16(exclusive)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
NVD-CWE-noinfoPrimarynvd@nist.gov
CWE ID: NVD-CWE-noinfo
Type: Primary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553d416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
https://git.kernel.org/stable/c/ea941ac294d75d0ace50797aebf0056f6f8f7a7f416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Hyperlink: https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource:
Patch
Hyperlink: https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553d
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource:
Patch
Hyperlink: https://git.kernel.org/stable/c/ea941ac294d75d0ace50797aebf0056f6f8f7a7f
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource:
Patch

Change History

0
Information is not available yet

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