CVE-2012-6547

low

Published 2013-03-15 · 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

1.9

Description

The __tun_chr_ioctl function in drivers/net/tun.c in the Linux kernel before 3.6 does not initialize a certain structure, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.

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

Linux kernel Affected 160 releases

Version	Status	Fixed in
3.5.6	Affected	—
3.5.5	Affected	—
3.5.4	Affected	—
3.5.3	Affected	—
3.5.2	Affected	—
3.5.1	Affected	—
3.4.32	Affected	—
3.4.31	Affected	—
3.4.30	Affected	—
3.4.29	Affected	—
3.4.28	Affected	—
3.4.27	Affected	—
3.4.26	Affected	—
3.4.25	Affected	—
3.4.24	Affected	—
3.4.23	Affected	—
3.4.22	Affected	—
3.4.21	Affected	—
3.4.20	Affected	—
3.4.19	Affected	—
3.4.18	Affected	—
3.4.17	Affected	—
3.4.16	Affected	—
3.4.15	Affected	—
3.4.14	Affected	—
3.4.13	Affected	—
3.4.12	Affected	—
3.4.11	Affected	—
3.4.10	Affected	—
3.4.9	Affected	—
3.4.8	Affected	—
3.4.7	Affected	—
3.4.6	Affected	—
3.4.5	Affected	—
3.4.4	Affected	—
3.4.3	Affected	—
3.4.2	Affected	—
3.4.1	Affected	—
3.4	Affected	—
3.3.8	Affected	—
3.3.7	Affected	—
3.3.6	Affected	—
3.3.5	Affected	—
3.3.4	Affected	—
3.3.3	Affected	—
3.3.2	Affected	—
3.3.1	Affected	—
3.3	Affected	—
3.2.30	Affected	—
3.2.29	Affected	—
3.2.28	Affected	—
3.2.27	Affected	—
3.2.26	Affected	—
3.2.25	Affected	—
3.2.24	Affected	—
3.2.23	Affected	—
3.2.22	Affected	—
3.2.21	Affected	—
3.2.20	Affected	—
3.2.19	Affected	—
3.2.18	Affected	—
3.2.17	Affected	—
3.2.16	Affected	—
3.2.15	Affected	—
3.2.14	Affected	—
3.2.13	Affected	—
3.2.12	Affected	—
3.2.11	Affected	—
3.2.10	Affected	—
3.2.9	Affected	—
3.2.8	Affected	—
3.2.7	Affected	—
3.2.6	Affected	—
3.2.5	Affected	—
3.2.4	Affected	—
3.2.3	Affected	—
3.2.2	Affected	—
3.2.1	Affected	—
3.2	Affected	—
3.1.10	Affected	—
3.1.9	Affected	—
3.1.8	Affected	—
3.1.7	Affected	—
3.1.6	Affected	—
3.1.5	Affected	—
3.1.4	Affected	—
3.1.3	Affected	—
3.1.2	Affected	—
3.1.1	Affected	—
3.1	Affected	—
3.0.68	Affected	—
3.0.67	Affected	—
3.0.66	Affected	—
3.0.65	Affected	—
3.0.64	Affected	—
3.0.63	Affected	—
3.0.62	Affected	—
3.0.61	Affected	—
3.0.60	Affected	—
3.0.59	Affected	—
3.0.58	Affected	—
3.0.57	Affected	—
3.0.56	Affected	—
3.0.55	Affected	—
3.0.54	Affected	—
3.0.53	Affected	—
3.0.52	Affected	—
3.0.51	Affected	—
3.0.50	Affected	—
3.0.49	Affected	—
3.0.48	Affected	—
3.0.47	Affected	—
3.0.46	Affected	—
3.0.45	Affected	—
3.0.44	Affected	—
3.0.43	Affected	—
3.0.42	Affected	—
3.0.41	Affected	—
3.0.40	Affected	—
3.0.39	Affected	—
3.0.38	Affected	—
3.0.37	Affected	—
3.0.36	Affected	—
3.0.35	Affected	—
3.0.34	Affected	—
3.0.33	Affected	—
3.0.32	Affected	—
3.0.31	Affected	—
3.0.30	Affected	—
3.0.29	Affected	—
3.0.28	Affected	—
3.0.27	Affected	—
3.0.26	Affected	—
3.0.25	Affected	—
3.0.24	Affected	—
3.0.23	Affected	—
3.0.22	Affected	—
3.0.21	Affected	—
3.0.20	Affected	—
3.0.19	Affected	—
3.0.18	Affected	—
3.0.17	Affected	—
3.0.16	Affected	—
3.0.15	Affected	—
3.0.14	Affected	—
3.0.13	Affected	—
3.0.12	Affected	—
3.0.11	Affected	—
3.0.10	Affected	—
3.0.9	Affected	—
3.0.8	Affected	—
3.0.7	Affected	—
3.0.6	Affected	—
3.0.5	Affected	—
3.0.4	Affected	—
3.0.3	Affected	—
3.0.2	Affected	—
3.0.1	Affected	—
3.0	Affected	—
—	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`3.2.29-1`
sid	Fixed	`3.2.29-1`
forky	Fixed	`3.2.29-1`
bullseye	Fixed	`3.2.29-1`
bookworm	Fixed	`3.2.29-1`

References

CWEs

CWE-200

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

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