CVE-2022-39842 (Medium) detected in linuxlinux-4.19.239

[mend-bolt-for-github]

CVE-2022-39842 - Medium Severity Vulnerability

Vulnerable Library - linuxlinux-4.19.239

The Linux Kernel

Library home page: https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/?wsslib=linux

Found in HEAD commit: 8b7c061438f230c475fd8cd97a0917f6ebb9fbe0

Found in base branch: master

Vulnerable Source Files (2)

/drivers/video/fbdev/pxa3xx-gcu.c
/drivers/video/fbdev/pxa3xx-gcu.c

Vulnerability Details

An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an integer overflow and bypassing the size check. After that, because it is used as the third argument to copy_from_user(), a heap overflow may occur.

Publish Date: 2022-09-05

URL: CVE-2022-39842

CVSS 3 Score Details (6.1)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Local
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: Low
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://www.linuxkernelcves.com/cves/CVE-2022-39842

Release Date: 2022-09-05

Fix Resolution: v4.9.330,v4.14.295,v4.19.260,v5.4.215,v5.10.145,v5.15.70

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[mend-bolt-for-github]

ℹ️ This issue was automatically re-opened by Mend because the vulnerable library in the specific branch(es) has been detected in the Mend inventory.