CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 7.6. It affects Linux.
CVE
CVE-2025-21994
Severity
HIGH
CVSS
7.6
EPSS
0.28%
Linux
Original NVD Description
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.
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