linux-kernel - Uninitialized Variable Use in video: fbdev: pm3fb

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:   Tue, 8 Oct 2019 13:32:45 -0700
From:   Yizhuo Zhai <yzhai003@....edu>
To:     Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Uninitialized Variable Use in video: fbdev: pm3fb

Hi All:

drivers/video/fbdev/pm3fb.c:

Inside function pm3fb_write_mode(),  variable "m" "n" "p" could leave
uninitialized after pm3fb_calculate_clock(), however, they are used
later in PM3_WRITE_DAC_REG, which is potentially unsafe.

-- 
Kind Regards,

Yizhuo Zhai

Computer Science, Graduate Student
University of California, Riverside