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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2021-46920
HistoryFeb 27, 2024 - 7:15 a.m.

CVE-2021-46920

2024-02-2707:15:08
Debian Security Bug Tracker
security-tracker.debian.org
9
linux kernel
vulnerability
dmaengine

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

7.5

Confidence

Low

EPSS

0

Percentile

15.5%

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.

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

7.5

Confidence

Low

EPSS

0

Percentile

15.5%