CVE-2013-3954

medium

Published 2013-06-05 · 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

6.9

Description

The posix_spawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not properly validate the data for file actions and port actions, which allows local users to (1) cause a denial of service (panic) via a size value that is inconsistent with a header count field, or (2) obtain sensitive information from kernel heap memory via a certain size value in conjunction with a crafted buffer.

Predictions

Exploit likelihood

20%

Patch ETA

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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

macOS Affected 53 releases

Version	Status	Fixed in
10.8.4	Affected	—
10.8.3	Affected	—
10.8.2	Affected	—
10.8.1	Affected	—
10.8.0	Affected	—
6.1.3	Affected	—
6.1.2	Affected	—
6.1	Affected	—
6.0.2	Affected	—
6.0.1	Affected	—
6.0	Affected	—
5.1.1	Affected	—
5.1	Affected	—
5.0.1	Affected	—
5.0	Affected	—
4.3.5	Affected	—
4.3.3	Affected	—
4.3.2	Affected	—
4.3.1	Affected	—
4.3.0	Affected	—
4.2.8	Affected	—
4.2.5	Affected	—
4.2.1	Affected	—
4.1	Affected	—
4.0.2	Affected	—
4.0.1	Affected	—
4.0	Affected	—
3.2.2	Affected	—
3.2.1	Affected	—
3.2	Affected	—
3.1.3	Affected	—
3.1.2	Affected	—
3.1	Affected	—
3.0.1	Affected	—
3.0	Affected	—
2.2.1	Affected	—
2.2	Affected	—
2.1.1	Affected	—
2.1	Affected	—
2.0.2	Affected	—
2.0.1	Affected	—
2.0.0	Affected	—
2.0	Affected	—
1.1.5	Affected	—
1.1.4	Affected	—
1.1.3	Affected	—
1.1.2	Affected	—
1.1.1	Affected	—
1.1.0	Affected	—
1.0.2	Affected	—
1.0.1	Affected	—
1.0.0	Affected	—
—	Affected	—

References

CWEs

CWE-20

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

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