CVE-2022-50830

Summary

In the Linux kernel, the following vulnerability has been resolved:

auxdisplay: hd44780: Fix potential memory leak in hd44780_remove()

hd44780_probe() allocates a memory chunk for hd with kzalloc() and makes "lcd->drvdata->hd44780" point to it. When we call hd44780_remove(), we should release all relevant memory and resource. But "lcd->drvdata ->hd44780" is not released, which will lead to a memory leak.

We should release the "lcd->drvdata->hd44780" in hd44780_remove() to fix the memory leak bug.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux718e05ed92ecac0d9d3954bcc8064527c3ce7565 < 8311961a1724bfc64390c539dedc31e067a80315affected
LinuxLinux718e05ed92ecac0d9d3954bcc8064527c3ce7565 < 6cd37f8232f5e169a723e1d5fbe3b2139c2ef763affected
LinuxLinux718e05ed92ecac0d9d3954bcc8064527c3ce7565 < 5d407911e605702ffcc0e97a6db546592ab27dd0affected
LinuxLinux718e05ed92ecac0d9d3954bcc8064527c3ce7565 < ddf75a86aba2cfb7ec4497e8692b60c8c8fe0ee7affected
LinuxLinux5.11affected
LinuxLinux0 < 5.11unaffected
LinuxLinux5.15.100 <= 5.15.*unaffected
LinuxLinux6.1.18 <= 6.1.*unaffected
LinuxLinux6.2.5 <= 6.2.*unaffected
LinuxLinux6.3 <= *unaffected

Weaknesses

References