CVE-2022-49978

In the Linux kernel, the following vulnerability has been resolved: fbdev: fbpm2fb: Avoid potential divide by zero error In dofbioctl of fbmem.c, if cmd is FBIOPUTVSCREENINFO, var will be copied from user, then go through fbsetvar and info-fbops-fbcheckvar which could may be pm2fbcheckvar. Along...

CVE-2022-49978

In the Linux kernel, CVE-2022-49978 concerns the fbdev subsystem (fb_pm2fb) where, during do_fb_ioctl() handling of FBIOPUT_VSCREENINFO, a freely copied var may propagate to fb_set_var()/fb_check_var() and reach pm2fb_check_var(). If var->pixclock is zero, the reciprocal check can trigger a di...

CVE-2022-49978 fbdev: fb_pm2fb: Avoid potential divide by zero error

In the Linux kernel, the following vulnerability has been resolved: fbdev: fbpm2fb: Avoid potential divide by zero error In dofbioctl of fbmem.c, if cmd is FBIOPUTVSCREENINFO, var will be copied from user, then go through fbsetvar and info-fbops-fbcheckvar which could may be pm2fbcheckvar. Along...