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8.8
Firefox ESR on macOS could overrun shader memory
published 5 days ago
Summary
The Firefox ESR web browser on macOS may allocate more private shader memory than allowed, potentially spilling over its buffer. This could let malicious graphics code cause crashes or affect other data. Update Firefox ESR to the latest version to apply the fix.
What to do
- Update cleanstart firefox-esr to version 115.2.0-r0.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| CleanStart | cleanstart | firefox-esr |
< 115.2.0-r0 Fix: upgrade to 115.2.0-r0
|
Original advisory text
Due to large allocation checks in Angle for glsl shaders being too lenient a buffer overflow could have occurred when allocating too much private shader memory on mac OS
Security vulnerability affects the firefox-esr package. Due to large allocation checks in Angle for glsl shaders being too lenient a buffer overflow could have occurred when allocating too much private shader memory on mac OS.
Internet-facing
14 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit (estimated)
- Gives an attacker full control (estimated)
Timeline
Published30 Oct 2026
Updated31 Oct 2026
First seen31 Oct 2026
Sources
CLEANSTART-2024-GR43109 · OSV
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