Ubuntu.comUB:CVE-2016-4558CVE-2016-4558
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
26.5%
The BPF subsystem in the Linux kernel before 4.5.5 mishandles reference
counts, which allows local users to cause a denial of service
(use-after-free) or possibly have unspecified other impact via a crafted
application on (1) a system with more than 32 Gb of memory, related to the
program reference count or (2) a 1 Tb system, related to the map reference
count.
Bugs
Notes
| Author | Note |
|---|---|
| jdstrand | android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.10 and earlier preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support |
| sbeattie | made exploitable by unpriv bpf |
References
www.openwall.com/lists/oss-security/2016/05/06/7
git.kernel.org/linus/92117d8443bc5afacc8d5ba82e541946310f106e
launchpad.net/bugs/cve/CVE-2016-4558
nvd.nist.gov/vuln/detail/CVE-2016-4558
security-tracker.debian.org/tracker/CVE-2016-4558
ubuntu.com/security/notices/USN-3005-1
ubuntu.com/security/notices/USN-3006-1
ubuntu.com/security/notices/USN-3007-1
www.cve.org/CVERecord?id=CVE-2016-4558
Related
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
26.5%