This update for MozillaFirefox fixes the following issues: Firefox Extended Support Release 115.6.0 ESR changelog-entry * CVE-2023-6856: Heap-buffer-overflow affecting WebGL DrawElementsInstanced method with Mesa VM driver . * CVE-2023-6857: Symlinks may resolve to smaller than expected buffers . * CVE-2023-6858: Heap buffer overflow in nsTextFragment . * CVE-2023-6859: Use-after-free in PR_GetId ...