CVE-2017-17807

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Summary

CVECVE-2017-17807
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-12-20 23:29:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionThe KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task's "default request-key keyring" via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c.

Risk And Classification

Primary CVSS: v3.0 3.3 LOW from [email protected]

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

EPSS: 0.000600000 probability, percentile 0.186200000 (date 2026-05-18)

Problem Types: CWE-862 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary3.3LOWCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
2.0[email protected]Primary2.1AV:L/AC:L/Au:N/C:N/I:P/A:N

CVSS v3.0 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

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

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None

AV:L/AC:L/Au:N/C:N/I:P/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
[SECURITY] [DLA 1232-1] linux security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
USN-3620-1: Linux kernel vulnerabilities | Ubuntu security notices af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6 af854a3a-2127-422b-91ae-364da2661108 www.kernel.org Issue Tracking, Mailing List, Release Notes
USN-3617-2: Linux (HWE) vulnerabilities | Ubuntu security notices | Ubuntu af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com
USN-3619-1: Linux kernel vulnerabilities | Ubuntu security notices af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Issue Tracking, Patch
USN-3617-3: Linux kernel (Raspberry Pi 2) vulnerabilities | Ubuntu security notices af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com
Debian -- Security Information -- DSA-4073-1 linux af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
KEYS: add missing permission check for request_key() destination · torvalds/linux@4dca6ea · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Issue Tracking, Patch
Debian -- Security Information -- DSA-4082-1 linux af854a3a-2127-422b-91ae-364da2661108 www.debian.org
USN-3620-2: Linux kernel (Trusty HWE) vulnerabilities | Ubuntu security notices af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com
USN-3617-1: Linux kernel vulnerabilities | Ubuntu security notices af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com
USN-3619-2: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu security notices af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com
USN-3632-1: Linux kernel (Azure) vulnerabilities | Ubuntu security notices af854a3a-2127-422b-91ae-364da2661108 usn.ubuntu.com
Linux Kernel CVE-2017-17807 Local Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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