CVE-2016-9178
medium
CVSS v3
5.5
CVSS v4 NEW
—
VIR risk
5.5
Description
The __get_user_asm_ex macro in arch/x86/include/asm/uaccess.h in the Linux kernel before 4.7.5 does not initialize a certain integer variable, which allows local users to obtain sensitive information from kernel stack memory by triggering failure of a get_user_ex call.
Predictions
Exploit likelihood
55%
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 withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 4.7.5-1 |
| debian | bullseye | fixed | 4.7.5-1 |
| debian | forky | fixed | 4.7.5-1 |
| debian | sid | fixed | 4.7.5-1 |
| debian | trixie | fixed | 4.7.5-1 |
| linux-kernel | affected | |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1c109fabbd51863475cd12ac206bdd249aee35af
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5
- http://www.openwall.com/lists/oss-security/2016/11/04/4
- http://www.securityfocus.com/bid/94144
- https://bugzilla.redhat.com/show_bug.cgi?id=1391908
- https://github.com/torvalds/linux/commit/1c109fabbd51863475cd12ac206bdd249aee35af
- https://www.suse.com/security/cve/CVE-2016-9178.html
- https://security-tracker.debian.org/tracker/CVE-2016-9178
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.