Ubuntu.comUB:CVE-2018-20449CVE-2018-20449
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
0.0004 Low
EPSS
Percentile
5.1%
The hidma_chan_stats function in drivers/dma/qcom/hidma_dbg.c in the Linux
kernel 4.14.90 allows local users to obtain sensitive address information
by reading “callback=” lines in a debugfs file.
Notes
| Author | Note |
|---|---|
| tyhicks | Two mitigating factors for this issue are that debugfs files are restricted to root and KASLR is only used in 18.04 and newer |
References
launchpad.net/bugs/cve/CVE-2018-20449
lists.debian.org/debian-security-tracker/2019/01/msg00029.html
lore.kernel.org/lkml/CABXRUiRP8fHvGkO3T9AOFV=prVUACiCm2frbAEnG2v6UhrTw0A@mail.gmail.com/
nvd.nist.gov/vuln/detail/CVE-2018-20449
security-tracker.debian.org/tracker/CVE-2018-20449
www.cve.org/CVERecord?id=CVE-2018-20449
Related
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
0.0004 Low
EPSS
Percentile
5.1%