ESR: Crash to desktop when opening particular emails
Categories
(Thunderbird :: Security, defect)
Tracking
(Not tracked)
People
(Reporter: 7d575kgb, Unassigned)
Details
(Keywords: crash)
Attachments
(3 files)
Steps to reproduce:
Steps to reproduce:
Open an email from sender X using any available method - e.g. double-clicking.
Additional Info inc. Background and Workaround:
Platform: Linux
Thunderbird ESR crashes whenever I open emails from a particular business's customer support team. This has been reproducible across all the versions of Thunderbird ESR I've used since 19th December 2023, up to and including the current version (128.6.0 64-bit). The problem was raised with the sender and they concluded it had nothing to do with them. All the emails from their customer support team cause the crash, without exception, with the latest such email being from mid-February 2025.
Selecting one of the emails in question and choosing "Edit as New Message" allows the email to be read and replied to without causing the crash. There doesn't appear to be anything obviously odd about the content that would be causing this.
I'm happy to submit copies of the emails and other info, e.g. logs, but as I value my privacy I'd appreciate communication on the best way to do this first. Thank you.
Actual results:
Thunderbird opens a new tab for the email then immediately crashes to the desktop before displaying any content. The email is still marked as Unread when Thunderbird is re-opened.
Expected results:
Email opens in a new tab and can be read without issues.
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Comment 1•15 days ago
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Does it crash if you open the message which has been saved to a file as .eml? Send to Magnus whom I have just copied on this bug report.
Also, visit Help > Troubleshooting information and find your crash IDs, described at https://support.mozilla.org/en-US/kb/mozilla-crash-reporter-tb. Paste the IDs here in this bug report.
Does it crash if you open the message which has been saved to a file as .eml?
Yes.
Send to Magnus whom I have just copied on this bug report.
Glad to. Please supply a public GPG key for Magnus so that I can encrypt the .eml file and then attach it to this bug report.
Also, visit Help > Troubleshooting information and find your crash IDs, described at https://support.mozilla.org/en-US/kb/mozilla-crash-reporter-tb. Paste the IDs here in this bug report.
I have no crash IDs. Crash Reporter is non-functional for my distro.
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Comment 3•14 days ago
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You can find my key on the keyserver (use mkmelin at thunderbird.net)
All information contained in the attached file is to be considered private and confidential and protected under appropriate data protection legislation. It is not to be exposed publically, such as by reference in a future response to this bug report, and is supplied for the sole purpose of identifying and resolving a bug or bugs in Mozilla software. Thank you.
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Comment 5•11 days ago
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Opening the message doesn't crash for me.
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Comment 6•10 days ago
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I have no crash IDs. Crash Reporter is non-functional for my distro.
What is your distro?
I've uploaded some additional information, encrypted to Magnus's GPG key.
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Comment 8•9 days ago
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I don't think that info brings us much forwards unfortunately.
Anyway, as it does not crash for me, perhaps it could be due to distro customizations or bugs e.g. in GnuPG if you're using that.
Did you try using a build from https://thunderbird.net instead of the distro installed version?
I agree that distro customizations are probably responsible. I've uploaded some more information that you should find useful. It's encrypted to the same public key as before.
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Comment 10•6 days ago
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Thought I should add that the distro customizations are unlikely to be anything beyond changing Thunderbird's default settings. I don't want you to get the wrong idea that Thunderbird is somehow non-standard and therefore probably not supported by Mozilla.
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Comment 11•6 days ago
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So do you crash with a build from https://thunderbird.net?
Description
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