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How the CVE Works
CVE-2025-21007 is an out-of-bounds write vulnerability in `libsavsvc.so` affecting Android versions prior to Android 15. The flaw occurs due to improper handling of uninitialized memory, allowing local attackers to trigger memory corruption. By crafting malicious input, an attacker can exploit uninitialized pointers or buffer boundaries, leading to arbitrary code execution or system crashes. The vulnerability stems from insufficient validation in memory operations within the library, enabling attackers to overwrite adjacent memory regions.
DailyCVE Form
Platform: Android
Version: < 15
Vulnerability: Memory corruption
Severity: Critical
Date: 07/15/2025
Prediction: Patch by 08/2025
What Undercode Say
adb shell pm path com.samsung.libsavsvc strings libsavsvc.so | grep "uninitialized" memcpy(dest, src, unchecked_size);
How Exploit
void exploit() {
trigger_oob_write(uninitialized_ptr, malicious_data);
}
Protection from this CVE
- Update to Android 15
- Apply vendor patches
- Restrict local app permissions
Impact
- Arbitrary code execution
- System instability
- Privilege escalation
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
