Got it, thanks for the explanation.
At least we know the overwrite doesn't happen, which removes the
potential security issue out of the equation.
To be honest I'm not completely convinced it was exploitable, but I'm
not convinced it wasn't either, so better play it safe and patch it out.
The sid
Tested on Ubuntu 22.04, it seems that EoG / EoM / gdk-
pixbuf-{pixdata,thumbnailer} try to allocate all the system's memory
with the "more_trouble.poc" from the original report.
Out of these, EoM seems not to handle it gracefully, as it gets killed
by oom-killer. The others simply give up at some
I just checked, and it seems EOM still crashes with OOM, even with the
patched library (version 2.42.8). I'm guessing this is a separate bug in
EOM?
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More details about the backlight control can be found in
https://forums.developer.nvidia.com/t/legion-5-no-backlight-control-in-
discrete-graphics-mode/160292/11
If you have any questions please create a topic in the nvidia forums or
open a new bug!
/thread hijack off
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Again my apologies to everyone for hijacking this thread, But since
people are asking, and I was able to solve the backlight problem after
days of pain, here are the instructions. Two caveats though:
- you need to have the laptop in "Discrete" mode in the BIOS (in my experience,
Hybrid mode gives
Don't want to hijack this thread, but has anyone here with a Legion 5
(AMD version) has gotten the backlight working in Discrete graphics mode
(only the nvidia GPU enabled)?
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@Azizkhan (injkgz)
I don't think it is, I believe the for-next branch in linux-gpio will
only be integrated in 5.11, but @Coiby Xu (coiby) should be able to
confirm that.
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To be specific, this is the branch I built:
https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git/log/?h=for-next
The kernel I built had 0f2c7af45d7eef8455d7ad39c5326229bf19a2ed as the
latest commit.
I have a Legion 5 15ARH05H (slightly different than 15ARH05).
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@Coiby Xu (coiby)
I build the next branch of linux-gpio (which contains the patch you mentioned
in #251), and the trackpad works just fine without the hid polling on the
kernel command line.
You can contact me if you'd like further testing, my email is
pedrib_at_gmail_dot_com
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the only option for was to downgrade nvidea drives to 304.137
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Title:
nvidia-340 340.104-0ubuntu1: nvidia-340
I confirm that I have same issue with the kernell 4.13.0-26. Witm my
GeForce 300 series, is not possible install the new nvidea drives
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