- Mozilla Thunderbird 115.6.0
https://www.thunderbird.net/en-US/thunderbird/115.6.0/releasenotes/
* Message selection misbehaved after selecting a sub-message in an
expanded thread, collapsing the thread, then pressing up/down to
move selection
* Thunderbird now attempts to reconnect on a new connection after
SMTP 4xx errors
* HTML FileLink attachments used the wrong encoding
MFSA 2023-55 (bsc#1217230)
* CVE-2023-50762 (bmo#1862625)
Truncated signed text was shown with a valid OpenPGP
signature
* CVE-2023-50761 (bmo#1865647)
S/MIME signature accepted despite mismatching message date
* CVE-2023-6856 (bmo#1843782)
Heap-buffer-overflow affecting WebGL DrawElementsInstanced
method with Mesa VM driver
* CVE-2023-6857 (bmo#1796023)
Symlinks may resolve to smaller than expected buffers
* CVE-2023-6858 (bmo#1826791)
Heap buffer overflow in nsTextFragment
* CVE-2023-6859 (bmo#1840144)
Use-after-free in PR_GetIdentitiesLayer
* CVE-2023-6860 (bmo#1854669)
Potential sandbox escape due to VideoBridge lack of texture
validation
* CVE-2023-6861 (bmo#1864118)
Heap buffer overflow affected nsWindow::PickerOpen(void) in
headless mode
* CVE-2023-6862 (bmo#1868042)