Re: [PATCH] X.509: Fix the time validation [ver #3]

[Alexander Holler]

Am 12.11.2015 um 12:38 schrieb David Howells:
> This fixes CVE-2015-5327.  It affects kernels from 4.3-rc1 onwards.
>
> Fix the X.509 time validation to use month number-1 when looking up the
> number of days in that month.  Also put the month number validation before
> doing the lookup so as not to risk overrunning the array.

I've just run into this with 4.3.1 (mon_len ended up with 0 because of 
the wrong index). Which means currently build stable kernels with 
signature verification might not load modules (depending on which value 
the invalid index mon_len (12) ends up with.

Regards,

Alexander Holler

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