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Firefox 89.0.1 security update is now available

The web browser Firefox 89.0.1 is now available. The new version of Mozilla's web browser fixes a security issue and several non-security related issues.

Most Firefox installations should receive the update automatically. You can check Menu > Help > About Firefox to run a manual check for the update so that it is installed right now and not at a later point. Firefox includes automatic updates functionality that checks for updates frequently to install them once they are discovered (Mozilla is working on background updates in Firefox for Windows)

The help page that opens lists the installed version of the browser as well.

firefox 89.0.1

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Firefox 89.0.1 addresses one security issue. The security advisory reveals that the issue has the severity rating of moderate and affects Firefox on Windows devices.

When drawing text onto a canvas with WebRender disabled, an out of bounds read could occur.

This bug only affects Firefox on Windows. Other operating systems are unaffected.

Besides the security fix, Firefox 89.0.1 addresses several issues, some of which are operating system specific.

The update addresses the broken scrollbars issue on some GTK themes on Linux, and performance and stability regressions with WebRender on systems running Linux.

On Mac OS X, screen flickering was fixed that happened when pages were scrolled on external monitors.

On Windows, a screen reader issue was resolved that prevented certain screen readers from interacting with Firefox.

Firefox 89.0.1 fixes font related regressions next to that, and the Enterprise policy DisableDeveloperTools, which did not have any effect anymore.

Last but not least, the new release includes updated translations and full support for Spanish (Mexico) localization.

You can check out the entire Firefox 89.0.1 release notes on the official Mozilla website. There you find links to Bugzilla, Mozllla's bug tracking website, in case you want to take a closer look at a bug.

The next major update for Firefox is Firefox 90. It is scheduled to be released on July 13, 2021.

Summary
Firefox 89.0.1 security update is now available
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Firefox 89.0.1 security update is now available
Description
The web browser Firefox 89.0.1 is now available. The new version of Mozilla's web browser fixes a security issue and several non-security related issues.
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Ghacks Technology News
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Comments

  1. Karl said on June 16, 2021 at 4:56 pm
    Reply

    Just updated on MacOS and so far so good, no issues to report.

  2. NeonRobot said on June 16, 2021 at 9:28 pm
    Reply

    Mozilla abomination for house-wifes w/o ftp support.

  3. John C. said on June 17, 2021 at 6:19 am
    Reply

    I refuse to update Firefox to the new UI. I tried it out and it was horrible. Went back to version 89.0.1.

    1. Yash said on June 17, 2021 at 7:25 am
      Reply

      Wow that was funny.

      1. Yash said on June 17, 2021 at 9:05 pm
        Reply

        John C.
        I genuinely thought it was a bit of sarcasm from your part as the version number was in the headline of the article. That’s why I said funny which it essentially is :-)

    2. Tom Hawack said on June 17, 2021 at 12:08 pm
      Reply

      I guess you mean Firefox version 89.0 or 88.01, rather 88.0.1 given you refuse the new UI (FF89+).
      You must know that setting “browser.proton.enabled” to false in about:config keeps (for the most part) Firefox’s UI to what it was prior to version 89… a pity to miss the security updates of a new version on the ground of its UI : what could we compare that to? Refusing to go steady because the lady doesn’t know how to cook right? (I’m French so the cooking is important, but not that much!).

    3. Anonymous said on June 17, 2021 at 5:33 pm
      Reply

      Here is how to fix it

      open about:config, type “proton” in the search box, and then, toggle the
      Proton-related options to the reverse value of their default.
      Make sure they are set to False.

      1. Iron Heart said on June 17, 2021 at 6:22 pm
        Reply

        @Anonymous

        This setting won’t work anymore in a few weeks. They are already removing the old UI code from Nightly. Enjoy Proton going forward.

  4. ULBoom said on June 17, 2021 at 2:16 pm
    Reply

    I tried v. 90 for a week or so just to see what it is. Same as 89 best I could tell, still can regain compact layout and kill chromium tinyskinnytext.

    https://ftp.mozilla.org/pub/firefox/releases/

    Went back to ESR, much smoother and far less bloat to remove/disable. There should be a BloatGuillotine Add On for FF to just chop off all the useless junk instead of spending an hour performing about:config resections.
    :)

  5. owl said on June 18, 2021 at 2:11 am
    Reply

    I use ESR (78.11.0esr) regularly, but I also use Developer Edition (90.0b8) and Nightly (91.0a1) to try Proton.

    In conclusion, I don’t feel any particular discomfort with “Proton”; the “Dark” theme revamped by Proton is pleasant. The tabs are also an excellent user experience, with improved visibility for my eyesight is deteriorating, and Nightly is a pleasure to use, with the benefit of “background updates” as updates are released daily.
    I find it hard to understand the negative views.

    But even so, my preference is “ESR”.
    Firefox ESR does not come with the latest features but it has the latest security and stability fixes.
    https://support.mozilla.org/en-US/kb/switch-to-firefox-extended-support-release-esr
    Firefox ESR release cycle | support.mozilla.org
    https://support.mozilla.org/en-US/kb/firefox-esr-release-cycle
    Firefox update channel | support.mozilla.org
    https://support.mozilla.org/en-US/kb/choosing-firefox-update-channel
    ESR Landing Process | wiki.mozilla.org
    https://wiki.mozilla.org/Release_Management/ESR_Landing_Process

    1. owl said on June 18, 2021 at 2:28 am
      Reply

      Correction of text,
      Before correction: The tabs are also an excellent user experience, with improved visibility for my eyesight is deteriorating, and Nightly is a pleasure to use, with the benefit of “background updates” as updates are released daily.
      After correction: The tabs are also an excellent user experience, with improved visibility as my eyesight is deteriorating, and Nightly is a pleasure to use, with the benefit of “background updates” as updates are released daily.

    2. huggybear29 said on July 12, 2021 at 9:12 pm
      Reply

      I also use 78.11 esr, but only because it’s Firefox’s last compatible browser version for Mac OS 10.95 mavericks.

      I’ve read that security updates for 78.11 will end 10/2021
      [https://forums.macrumors.com/threads/yes-its-2021-and-you-can-still-use-mavericks.2280816/].
      Wikipedia also lists 10/21 as ‘End-of-life 78.x.x product line’ [https://en.wikipedia.org/wiki/Firefox_version_history#Firefox_78_through_90].

      The 2nd link you provided shows Firefox 78.1 ESR (not .11), and that cycle is only through 10/19.

      I assume 78.11 is secure until 10/21, but can anyone confirm that?

      What is your web security plan after that?

      1. owl said on July 13, 2021 at 9:22 am
        Reply

        @huggybear29,

        ESR 78.15 (Release Date?2021-10-05) is the last security update for the current “ESR 78” series and support will continue until the next major upgrade, “ESR 91” series, 91.3 (Release Date?2021-11-02).
        However, in rare cases, the release date may be postponed.
        Future branch dates | wiki.mozilla.org
        https://wiki.mozilla.org/Release_Management/Calendar

        As far as the “ESR 78.11” you are asking about is concerned, support will expire by ESR 78.12 (Release Date: 2021-07-13). In other words, today is the end-of-life for ESR 78.11.

        Note
        Firefox Mac OS X 10.9, 10.10 and 10.11 users move to Extended Support Release | support.mozilla.org
        https://support.mozilla.org/en-US/kb/firefox-mac-osx-users-esr?redirectslug=macos-users-esr&redirectlocale=en-US

        About Official Framework
        Firefox Release Calendar | wiki.mozilla.org
        https://wiki.mozilla.org/Release_Management/Calendar
        This schedule is based on the current RapidRelease plan. Future dates may change if the process changes. Code is not always released to users on the same day as the branch migration. The release to users may be a few days later, to allow for manual testing and sign-off. Thunderbird tracks the ESR schedule column per Thunderbird release info.
        ESR Landing Process | wiki.mozilla.org
        https://wiki.mozilla.org/Release_Management/ESR_Landing_Process

      2. huggybear29 said on July 13, 2021 at 4:15 pm
        Reply

        thanks for replying

      3. huggybear29 said on July 13, 2021 at 4:22 pm
        Reply

        Thanks. Any mac-friendly secure browsers still available I could run on my old OS mavericks temporarily while I upgrade to a new system?

  6. owl said on June 18, 2021 at 2:27 am
    Reply

    Correction of text,
    Before correction: The tabs are also an excellent user experience, with improved visibility for my eyesight is deteriorating, and Nightly is a pleasure to use, with the benefit of “background updates” as updates are released daily.
    After correction: The tabs are also an excellent user experience, with improved visibility as my eyesight is deteriorating, and Nightly is a pleasure to use, with the benefit of “background updates” as updates are released daily.

  7. Jeremy said on June 18, 2021 at 5:04 am
    Reply

    Gotta say, Love the design refresh, but hate the performance when hardware acceleration is toggled on. I hope 90 is better there. 88 just worked though. I don’t blame the UI refresh either.

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