A use-after-free vulnerability can occur when the thread for a Web Worker is freed from memory prematurely instead of from memory in the main thread while cancelling fetch operations. This vulnerability affects Firefox < 58.
{ "availability": "No subscription required", "binaries": [ { "binary_name": "firefox", "binary_version": "58.0+build6-0ubuntu0.14.04.1" }, { "binary_name": "firefox-dev", "binary_version": "58.0+build6-0ubuntu0.14.04.1" }, { "binary_name": "firefox-globalmenu", "binary_version": "58.0+build6-0ubuntu0.14.04.1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "58.0+build6-0ubuntu0.14.04.1" }, { "binary_name": "firefox-testsuite", "binary_version": "58.0+build6-0ubuntu0.14.04.1" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "firefox", "binary_version": "58.0+build6-0ubuntu0.16.04.1" }, { "binary_name": "firefox-dev", "binary_version": "58.0+build6-0ubuntu0.16.04.1" }, { "binary_name": "firefox-globalmenu", "binary_version": "58.0+build6-0ubuntu0.16.04.1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "58.0+build6-0ubuntu0.16.04.1" }, { "binary_name": "firefox-testsuite", "binary_version": "58.0+build6-0ubuntu0.16.04.1" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "firefox", "binary_version": "59.0.1+build1-0ubuntu1" }, { "binary_name": "firefox-dev", "binary_version": "59.0.1+build1-0ubuntu1" }, { "binary_name": "firefox-globalmenu", "binary_version": "59.0.1+build1-0ubuntu1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "59.0.1+build1-0ubuntu1" }, { "binary_name": "firefox-testsuite", "binary_version": "59.0.1+build1-0ubuntu1" } ] }