Apple OS Kernel Memory Corruption Vulnerability (CVE-2025-31234) – Critical

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How CVE-2025-31234 Works

This vulnerability stems from improper input sanitization in the kernel of Apple operating systems (visionOS, iOS, iPadOS, macOS, tvOS). Attackers can exploit this flaw by sending maliciously crafted inputs, leading to kernel memory corruption or system crashes. The lack of boundary checks allows arbitrary code execution with kernel privileges, compromising the entire device. The CVSS 4.0 score reflects its critical severity due to low attack complexity and high impact on confidentiality, integrity, and availability.

DailyCVE Form

Platform: Apple OS (visionOS, iOS, iPadOS, macOS, tvOS)
Version: Pre-visionOS 2.5, iOS/iPadOS 18.5, macOS Sequoia 15.5, tvOS 18.5
Vulnerability: Kernel Memory Corruption
Severity: Critical
Date: 05/27/2025

Prediction: Patch expected by 06/10/2025

What Undercode Say:

Exploitation Analysis

  1. Trigger: Crafted syscall or malicious app bypasses input checks.

2. Payload: Overflows kernel buffer, corrupting adjacent memory.

3. Impact: Root privileges, denial-of-service, or data theft.

Detection & Mitigation

Check kernel version (unpatched systems):
sw_vers
uname -a
Temporary workaround (disable vulnerable services):
sudo launchctl unload /System/Library/LaunchDaemons/.plist

Exploit Code (PoC)

include <mach/mach.h>
// Crafted syscall to trigger overflow
kern_return_t exploit() {
mach_port_t port;
mach_vm_allocate(port, &address, size, flags); // Malicious params
return KERN_SUCCESS;
}

Patch Verification

Post-update check:
system_profiler SPSoftwareDataType | grep "System Version"

Network Protection

Block suspicious kernel-level connections:
sudo pfctl -e
echo "block in proto tcp from any to any port 1337" | sudo pfctl -f -

Forensics

Log kernel panics:
log show --predicate 'eventMessage contains "panic"' --last 24h

References

Sources:

Reported By: nvd.nist.gov
Extra Source Hub:
Undercode

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