PRIOn knowledge basePRION:CVE-2019-9213Null pointer dereference
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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.9 Medium
AI Score
Confidence
High
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
0.001 Low
EPSS
Percentile
33.4%
In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task.
References
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0a1d52994d440e21def1c2174932410b4f2a98a1
lists.opensuse.org/opensuse-security-announce/2019-03/msg00045.html
lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.html
packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.html
www.securityfocus.com/bid/107296
access.redhat.com/errata/RHSA-2019:0831
access.redhat.com/errata/RHSA-2019:1479
access.redhat.com/errata/RHSA-2019:1480
bugs.chromium.org/p/project-zero/issues/detail?id=1792
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.105
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.27
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.14
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.162
github.com/torvalds/linux/commit/0a1d52994d440e21def1c2174932410b4f2a98a1
lists.debian.org/debian-lts-announce/2019/03/msg00034.html
lists.debian.org/debian-lts-announce/2019/04/msg00004.html
lists.debian.org/debian-lts-announce/2019/05/msg00002.html
usn.ubuntu.com/3930-1/
usn.ubuntu.com/3930-2/
usn.ubuntu.com/3931-1/
usn.ubuntu.com/3931-2/
usn.ubuntu.com/3932-1/
usn.ubuntu.com/3932-2/
usn.ubuntu.com/3933-1/
usn.ubuntu.com/3933-2/
www.exploit-db.com/exploits/46502/
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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.9 Medium
AI Score
Confidence
High
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
0.001 Low
EPSS
Percentile
33.4%