CVE-2012-5838

critical

Published 2012-11-21 · Modified 2026-04-29

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

9.3

Description

The copyTexImage2D implementation in the WebGL subsystem in Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via large image dimensions.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

SUSE Affected 5 releases

Version	Status	Fixed in
12.2	Affected	—
12.1	Affected	—
11.4	Affected	—
11	Affected	—
10	Affected	—

Ubuntu Affected 4 releases

Version	Status	Fixed in
12.10	Affected	—
12.04	Affected	—
11.10	Affected	—
10.04	Affected	—

Application impact

Vendor	Product	Versions	Fixed
mozilla	firefox	`{"endExcluding":"10.0.11"}`	`10.0.11`
mozilla	seamonkey	`{"endExcluding":"2.14"}`	`2.14`
mozilla	thunderbird	`{"endExcluding":"17.0"}`	`17.0`
mozilla	thunderbird_esr	`{"endExcluding":"10.0.11"}`	`10.0.11`

References

CWEs

CWE-119

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.