fbdev: fbcon: release buffer when fbcon_do_set_font() failed (CVE-2022-50404)

Summary

fbdev: fbcon: release buffer when fbcon_do_set_font() failed

Original description

The description as published by the source.

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

fbdev: fbcon: release buffer when fbcon_do_set_font() failed

syzbot is reporting memory leak at fbcon_do_set_font() [1], for
commit a5a923038d70 ("fbdev: fbcon: Properly revert changes when
vc_resize() failed") missed that the buffer might be newly allocated
by fbcon_set_font().

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Affected packages

Linux Kernel

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.86"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.0.16"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.0.0"},{"fixed":"6.1.2"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

Debian DEBIAN-CVE-2022-50404 linux Fixed in: 6.1.4-1
Ubuntu UBUNTU-CVE-2022-50404 linux-hwe-edge

Summary

Original description

Affected packages

Fix status by distribution

References