CVE-2017-17807

low

Published 2017-12-20 · Modified 2026-05-13

CVSS v3

3.3

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

CVSS v2

2.1

VIR risk

3.3

Description

The 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.

Predictions

Exploit likelihood

34%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2017-17807

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2017-17807.html

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://github.com/torvalds/linux/commit/4dca6ea1d9432052afb06baf2e3ae78188a4410b

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b

OS impact

OS	Version	Status	Fixed in
arch		fixed	`4.9.69-1`
sles		affected
debian	bookworm	fixed	`4.14.7-1`
debian	bullseye	fixed	`4.14.7-1`
debian	forky	fixed	`4.14.7-1`
debian	sid	fixed	`4.14.7-1`
debian	trixie	fixed	`4.14.7-1`
linux-kernel		affected	`4.14.6`

References

CWEs

CWE-862

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