CVE-2021-3753

A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality.

CVSS v3.0 4.7 MEDIUM
CVSS v2.0 1.9 LOW

4.7^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

1.9^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:M/Au:N/C:P/I:N/A:N

Exploitability : 3.4 / Impact : 2.9

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1999589	Issue Tracking Patch Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/09/01/4	Exploit Mailing List Patch Third Party Advisory
https://github.com/torvalds/linux/commit/2287a51ba822384834dafc1c798453375d1107c7	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*

Information

Published : 2022-02-16 19:15

Updated : 2022-02-28 15:58

NVD link : CVE-2021-3753

Mitre link : CVE-2021-3753

JSON object : View

Products Affected

redhat

enterprise_linux

linux

linux_kernel

CWE

CWE-125

Out-of-bounds Read

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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