Vulnerability CVE-2017-7472
Published: 2017-05-11

Description:
The KEYS subsystem in the Linux kernel before 4.10.13 allows local users to cause a denial of service (memory consumption) via a series of KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring calls.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Linux Kernel < 4.10.13 'keyctl_set_reqkey_keyring' Local Denial of Service
Marcus Meissner
08.06.2017

Type:

CWE-404

 (Improper Resource Shutdown or Release)

CVSS2 => (AV:L/AC:L/Au:N/C:N/I:N/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.9/10
6.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete
Affected software
Linux -> Linux kernel 

 References:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c9f838d104fed6f2f61d68164712e3204bf5271b
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
http://openwall.com/lists/oss-security/2017/05/11/1
http://www.securityfocus.com/bid/98422
http://www.securitytracker.com/id/1038471
https://access.redhat.com/errata/RHSA-2018:0151
https://access.redhat.com/errata/RHSA-2018:0152
https://access.redhat.com/errata/RHSA-2018:0181
https://bugzilla.novell.com/show_bug.cgi?id=1034862
https://bugzilla.redhat.com/show_bug.cgi?id=1442086
https://github.com/torvalds/linux/commit/c9f838d104fed6f2f61d68164712e3204bf5271b
https://lkml.org/lkml/2017/4/1/235
https://lkml.org/lkml/2017/4/3/724
https://www.exploit-db.com/exploits/42136/
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.13
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