CVE-2017-18241
Published: 21 March 2018
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.
From the Ubuntu security team
It was discovered that the f2fs filesystem implementation in the Linux kernel did not handle the noflush_merge mount option correctly. An attacker could use this to cause a denial of service (system crash).
Priority
Low
CVSS 3 base score: 5.5
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
(4.13.0-16.19)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Released
(4.4.0-143.169)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Not vulnerable
(3.11.0-12.19)
|
|
|
Patches: Introduced by 6b4afdd794783fe515b50838aa36591e3feea990 Fixed by d4fdf8ba0e5808ba9ad6b44337783bd9935e0982 |
||
|
linux-aws Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
(4.15.0-1001.1)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Released
(4.4.0-1077.87)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Released
(4.4.0-1039.42)
|
|
|
linux-aws-hwe Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Not vulnerable
(4.15.0-1030.31~16.04.1)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
(4.15.0-1002.2)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Released
(4.13.0-1005.7)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Not vulnerable
(4.15.0-1023.24~14.04.1)
|
|
|
linux-azure-edge Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
(4.18.0-1006.6~18.04.1)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Not vulnerable
(4.13.0-1003.3)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
linux-euclid Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Ignored
(was needed ESM criteria)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
linux-flo Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Ignored
(abandoned)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
(trusty was ignored [abandoned])
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
(4.15.0-1001.1)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Released
(4.13.0-1002.5)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
linux-gcp-edge Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
(4.18.0-1004.5~18.04.1)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Ignored
(was needed now end-of-life)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Ignored
(was needed now end-of-life)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
(trusty was ignored [abandoned])
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
(trusty was ignored [abandoned])
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
(4.18.0-13.14~18.04.1)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Released
(4.13.0-26.29~16.04.2)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
(4.18.0-13.14~18.04.1)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Released
(4.13.0-26.29~16.04.2)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
(4.15.0-1002.2)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Released
(4.4.0-1041.47)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
(trusty was ignored [out of standard support])
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
(trusty was ignored [was needs-triage now end-of-life])
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
(trusty was ignored [out of standard support])
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Released
(4.4.0-143.169~14.04.2)
|
|
|
linux-maguro Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
(trusty was ignored [abandoned])
|
|
|
linux-mako Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Ignored
(abandoned)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
(trusty was ignored [abandoned])
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
(trusty was ignored [abandoned])
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
(4.15.0-1002.3)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Not vulnerable
(4.13.0-1008.9)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
linux-oracle Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
(4.15.0-1007.9)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Not vulnerable
(4.15.0-1007.9~16.04.1)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
(4.13.0-1005.5)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Released
(4.4.0-1104.112)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
Upstream |
Released
(4.13~rc1)
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Released
(4.4.0-1108.113)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
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 |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18241
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d4fdf8ba0e5808ba9ad6b44337783bd9935e0982
- https://github.com/torvalds/linux/commit/d4fdf8ba0e5808ba9ad6b44337783bd9935e0982
- https://ubuntu.com/security/notices/USN-3910-1
- https://ubuntu.com/security/notices/USN-3910-2
- NVD
- Launchpad
- Debian