Ubuntu.comUB:CVE-2017-18241CVE-2017-18241
4.9 Medium
CVSS2
Attack Vector
LOCAL
Attack 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
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
0.0004 Low
EPSS
Percentile
5.1%
fs/f2fs/segment.c in the Linux kernel before 4.13 allows local users to
cause a denial of service (NULL pointer dereference and panic) by using a
noflush_merge option that triggers a NULL value for a flush_cmd_control
data structure.
Notes
| Author | Note |
|---|---|
| ppisati | fixes a case in the F2FS_FS, when the fs is mounted with the ‘noflush_merge’ option, but support for flush coalition was introduced in: 6b4afdd794783fe515b50838aa36591e3feea990 |
| tyhicks | The affected user base for this issue is likely small since f2fs is not the default filesystem and it is not widely used in Ubuntu |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 16.04 | noarch | linux | <Â 4.4.0-143.169 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-aws | <Â 4.4.0-1039.42 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws | <Â 4.4.0-1077.87 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-azure | <Â 4.13.0-1005.7 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-gcp | <Â 4.13.0-1002.5 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-hwe | <Â 4.13.0-26.29~16.04.2 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-hwe-edge | <Â 4.13.0-26.29~16.04.2 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-kvm | <Â 4.4.0-1041.47 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-lts-xenial | <Â 4.4.0-143.169~14.04.2 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-raspi2 | <Â 4.4.0-1104.112 | UNKNOWN |
References
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d4fdf8ba0e5808ba9ad6b44337783bd9935e0982
github.com/torvalds/linux/commit/d4fdf8ba0e5808ba9ad6b44337783bd9935e0982
launchpad.net/bugs/cve/CVE-2017-18241
nvd.nist.gov/vuln/detail/CVE-2017-18241
security-tracker.debian.org/tracker/CVE-2017-18241
ubuntu.com/security/notices/USN-3910-1
ubuntu.com/security/notices/USN-3910-2
www.cve.org/CVERecord?id=CVE-2017-18241
Related
4.9 Medium
CVSS2
Attack Vector
LOCAL
Attack 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
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
0.0004 Low
EPSS
Percentile
5.1%