Possible glibc 2.35 ARM regression in LD_BIND_NOT
Nathan Nye
nnye@whitebeamsec.com
Mon Jul 4 19:31:36 GMT 2022
+Adhemerval
Hi Adhemerval,
I think you may know the relevant source best if this issue exists. Your
feedback would be really valuable if you're able to test it.
Very respectfully,
Nathan Nye
On 7/4/22 3:14 PM, Nathan Nye wrote:
> Good afternoon,
>
> I'm reviewing what could be a regression in LD_BIND_NOT's
> functionality in glibc 2.35 on ARM architectures (there were a few
> recent ARM audit changes). Symbol binding only occurs a single time on
> glibc 2.35/ARM, even when LD_BIND_NOT is enabled. I've tested:
>
> * Ubuntu 22.04 x86_64 glibc 2.35
> * Ubuntu 20.04 ARM glibc 2.34
> * Ubuntu 22.04 ARM glibc 2.35
>
> I could use a second pair of eyes on this issue to verify it exists.
> Here is the test case I cobbled together, please excuse the poor C
> code I wrote while testing: https://pastebin.com/raw/HSSYjemj
>
> I've also attached the test case to this email. Thanks!
>
> Very respectfully,
> Nathan Nye
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