CVE-2023-39928: debian debian_linux Use After Free

Vulnerability summary

CVE-2023-39928 is a high (CVSS 8.8) Use After Free vulnerability in debian debian_linux. EPSS estimates a 1.45% chance of exploitation in the next 30 days, higher than 72.8% of scored vulnerabilities.

Timeline

1. 06-10-2023
   PublishedVulnerability first disclosed.
2. 04-11-2025
   Last modifiedVulnerability information updated.

Description

A use-after-free vulnerability exists in the MediaRecorder API of Webkit WebKitGTK 2.40.5. A specially crafted web page can abuse this vulnerability to cause memory corruption and potentially arbitrary code execution. A user would need to to visit a malicious webpage to trigger this vulnerability.

• CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.