Re: [PATCH 4.19 0/3] BPF fixes for CVE-2021-3444 and CVE-2021-3600

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On Fri, Aug 27, 2021 at 10:55:30AM -0300, Thadeu Lima de Souza Cascardo wrote:
> The upstream changes necessary to fix these CVEs rely on the presence of JMP32,
> which is not a small backport and brings its own potential set of necessary
> follow-ups.
> 
> Daniel Borkmann, John Fastabend and Alexei Starovoitov came up with a fix
> involving the use of the AX register.
> 
> This has been tested against the test_verifier in 4.19.y tree and some tests
> specific to the two referred CVEs.

THanks for these, now queued up!

greg k-h



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