In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix incorrect validation for numaces field of smbacl parsedcal() validate numaces to allocate posixacestatearray. if (numaces > ULONGMAX / sizeof(struct smbace *)) It is an incorrect validation that we can create an array of size ULONGMAX. smbacl has ->size field to calculate actual number of aces in request buffer size. Use this to check invalid num_aces.
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