CVE-2017-16994

medium

Published 2017-11-27 · Modified 2026-05-13

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CVSS v3

5.5

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

6.5

Description

The walk_hugetlb_range function in mm/pagewalk.c in the Linux kernel before 4.14.2 mishandles holes in hugetlb ranges, which allows local users to obtain sensitive information from uninitialized kernel memory via crafted use of the mincore() system 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 with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-43178 dos linux verified

Google Security Research · 2017-11-24

Linux Kernel - 'mincore()' Uninitialized Kernel Heap Page Disclosure

Source code queued for fetch — refresh in a moment.

EDB-44304 dos linux

anonymous · 2017-12-11

Linux Kernel - 'mincore()' Heap Page Disclosure (PoC)

Source code queued for fetch — refresh in a moment.

EDB-44303 local linux

anonymous · 2017-12-11

Linux Kernel 4.13 (Debian 9) - Local Privilege Escalation

Source code queued for fetch — refresh in a moment.

OS impact

OS	Version	Status	Fixed in
sles		affected
debian	bookworm	fixed	`4.14.2-1`
debian	bullseye	fixed	`4.14.2-1`
debian	forky	fixed	`4.14.2-1`
debian	sid	fixed	`4.14.2-1`
debian	trixie	fixed	`4.14.2-1`
linux-kernel		affected	`4.14.2`

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.