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Vulnerability Intelligence

CVE-2021-33655

MEDIUM6.7

When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds

Published Jul 18, 2022

Modified 1 years ago

No fix available

Details

When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.

References

WEBhttp://www.openwall.com/lists/oss-security/2022/07/19/2 WEBhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=086ff84617185393a0bbf25830c4f36412a7d3f4 WEBhttps://lists.debian.org/debian-lts-announce/2022/10/msg00000.html ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2021-33655 ADVISORYhttps://www.debian.org/security/2022/dsa-5191

CVSS Analysis

CVSS v3.1

6.7

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

HighPR:H

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

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

Weakness Type (CWE)

Memory Safety

Out-of-bounds Write

Ecosystems

Timeline

PublishedJul 18, 2022

ModifiedAug 3, 2024

CVE-2021-33655 | Mondoo Vulnerability Intelligence