Ubuntu.comUB:CVE-2017-6951CVE-2017-6951
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
0.0004 Low
EPSS
Percentile
5.3%
The keyring_search_aux function in security/keys/keyring.c in the Linux
kernel through 3.14.79 allows local users to cause a denial of service
(NULL pointer dereference and OOPS) via a request_key system call for the
“dead” type.
Bugs
Notes
| Author | Note |
|---|---|
| sbeattie | partially fixed by c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81 though see http://www.spinics.net/lists/keyrings/msg01883.html in the Red Hat bug report, David Howells has an alternate fix that may be more appropriate for live-patching than c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81 : https://bugzilla.redhat.com/attachment.cgi?id=1268882 |
References
www.spinics.net/lists/keyrings/msg01845.html
www.spinics.net/lists/keyrings/msg01846.html
www.spinics.net/lists/keyrings/msg01849.html
launchpad.net/bugs/cve/CVE-2017-6951
nvd.nist.gov/vuln/detail/CVE-2017-6951
security-tracker.debian.org/tracker/CVE-2017-6951
ubuntu.com/security/notices/USN-3422-1
ubuntu.com/security/notices/USN-3422-2
www.cve.org/CVERecord?id=CVE-2017-6951
Related
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
0.0004 Low
EPSS
Percentile
5.3%