NetSight
IP …
high7.6

CVE-2025-21994

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix incorrect validation for num_aces field of smb_acl parse_dcal() validate num_ace…

Impact

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

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 5.15 before 5.15.180
from 5.16 before 6.1.132
from 6.2 before 6.6.85
from 6.7 before 6.12.21
from 6.13 before 6.13.9
Version 6.14

References