This update for chromium to version 73.0.3683.75 fixes the following issues:

Security issues fixed (bsc#1129059):

- CVE-2019-5787: Fixed a use after free in Canvas.
- CVE-2019-5788: Fixed a use after free in FileAPI.
- CVE-2019-5789: Fixed a use after free in WebMIDI.
- CVE-2019-5790: Fixed a heap buffer overflow in V8.
- CVE-2019-5791: Fixed a type confusion in V8.
- CVE-2019-5792: Fixed an integer overflow in PDFium.
- CVE-2019-5793: Fixed excessive permissions for private API in Extensions.
- CVE-2019-5794: Fixed security UI spoofing.
- CVE-2019-5795: Fixed an integer overflow in PDFium.
- CVE-2019-5796: Fixed a race condition in Extensions.
- CVE-2019-5797: Fixed a race condition in DOMStorage.
- CVE-2019-5798: Fixed an out of bounds read in Skia.
- CVE-2019-5799: Fixed a CSP bypass with blob URL.
- CVE-2019-5800: Fixed a CSP bypass with blob URL.
- CVE-2019-5801: Fixed an incorrect Omnibox display on iOS.
- CVE-2019-5802: Fixed security UI spoofing.
- CVE-2019-5803: Fixed a CSP bypass with Javascript URLs'.
- CVE-2019-5804: Fixed a command line injection on Windows.

Release notes: https://chromereleases.googleblog.com/2019/03/stable-channel-update-for-desktop_12.html