Description
An issue was discovered in certain Apple products. iOS before 10.3 is affected. Safari before 10.1 is affected. tvOS before 10.2 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | webkit2gtk | 2.14.6-1 | — |
| Debian 13 | webkit2gtk | 2.14.6-1 | — |
| Debian 12 | webkit2gtk | 2.14.6-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | qtwebkit-opensource-src | No fix yet | — |
| Ubuntu 22.04 LTS | qtwebkit-opensource-src | No fix yet | — |
| Ubuntu 20.04 LTS | qtwebkit-opensource-src | No fix yet | — |
| Ubuntu 18.04 LTS | webkitgtk +2 | No fix yet | — |
| Ubuntu 16.04 LTS | webkit2gtk | 2.16.1-0ubuntu0.16.04.1 | USN-3257-1 |
| Ubuntu 16.04 LTS | webkitgtk +2 | No fix yet | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- Apple WebKit - Negative-Size memmove in HTMLFormElement EDB-41810 · dos · Apr 4, 2017 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- USN-3257-1 webkit2gtk vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
References
- 1038137 vdb-entry
- https://support.apple.com/HT207601
- 97130 vdb-entry
- GLSA-201706-15 vendor-advisory
- 41810 exploit
- https://support.apple.com/HT207600
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1087
- https://support.apple.com/HT207617