PublicDateAtUSN: 2018-03-21
Candidate: CVE-2017-18241
PublicDate: 2018-03-21 16:29:00 UTC
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
Description:
 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.
Ubuntu-Description:
 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).
Notes:
 ppisati> fixes a case in the F2FS_FS, when the fs is mounted with the
 ppisati> 'noflush_merge' option, but support for flush coalition was introduced in:
 ppisati> 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
Bugs:
Priority: low
Discovered-by:
Assigned-to:
CVSS:
 nvd: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H [5.5 MEDIUM]

Patches_linux:
 break-fix: 6b4afdd794783fe515b50838aa36591e3feea990 d4fdf8ba0e5808ba9ad6b44337783bd9935e0982
upstream_linux: released (4.13~rc1)
precise/esm_linux: ignored (was needed ESM criteria)
trusty_linux: not-affected (3.11.0-12.19)
trusty/esm_linux: not-affected (3.11.0-12.19)
xenial_linux: released (4.4.0-143.169)
esm-infra/xenial_linux: released (4.4.0-143.169)
artful_linux: not-affected (4.13.0-11.12)
bionic_linux: not-affected (4.13.0-16.19)
cosmic_linux: not-affected (4.15.0-20.21)
devel_linux: not-affected (4.18.0-10.11)

Patches_linux-lts-trusty:
upstream_linux-lts-trusty: released (4.13~rc1)
precise/esm_linux-lts-trusty: ignored (was needed ESM criteria)
trusty_linux-lts-trusty: DNE
trusty/esm_linux-lts-trusty: DNE
xenial_linux-lts-trusty: DNE
artful_linux-lts-trusty: DNE
bionic_linux-lts-trusty: DNE
cosmic_linux-lts-trusty: DNE
devel_linux-lts-trusty: DNE

Patches_linux-goldfish:
upstream_linux-goldfish: released (4.13~rc1)
precise/esm_linux-goldfish: DNE
trusty_linux-goldfish: ignored (abandoned)
trusty/esm_linux-goldfish: DNE (trusty was ignored [abandoned])
xenial_linux-goldfish: ignored (was needed now end-of-life)
artful_linux-goldfish: DNE
bionic_linux-goldfish: DNE
cosmic_linux-goldfish: DNE
devel_linux-goldfish: DNE

Patches_linux-grouper:
upstream_linux-grouper: released (4.13~rc1)
precise/esm_linux-grouper: DNE
trusty_linux-grouper: ignored (abandoned)
trusty/esm_linux-grouper: DNE (trusty was ignored [abandoned])
xenial_linux-grouper: DNE
artful_linux-grouper: DNE
bionic_linux-grouper: DNE
cosmic_linux-grouper: DNE
devel_linux-grouper: DNE

Patches_linux-maguro:
upstream_linux-maguro: released (4.13~rc1)
precise/esm_linux-maguro: DNE
trusty_linux-maguro: ignored (abandoned)
trusty/esm_linux-maguro: DNE (trusty was ignored [abandoned])
xenial_linux-maguro: DNE
artful_linux-maguro: DNE
bionic_linux-maguro: DNE
cosmic_linux-maguro: DNE
devel_linux-maguro: DNE

Patches_linux-mako:
upstream_linux-mako: released (4.13~rc1)
precise/esm_linux-mako: DNE
trusty_linux-mako: ignored (abandoned)
trusty/esm_linux-mako: DNE (trusty was ignored [abandoned])
xenial_linux-mako: ignored (abandoned)
artful_linux-mako: DNE
bionic_linux-mako: DNE
cosmic_linux-mako: DNE
devel_linux-mako: DNE

Patches_linux-manta:
upstream_linux-manta: released (4.13~rc1)
precise/esm_linux-manta: DNE
trusty_linux-manta: ignored (abandoned)
trusty/esm_linux-manta: DNE (trusty was ignored [abandoned])
xenial_linux-manta: DNE
artful_linux-manta: DNE
bionic_linux-manta: DNE
cosmic_linux-manta: DNE
devel_linux-manta: DNE

Patches_linux-flo:
upstream_linux-flo: released (4.13~rc1)
precise/esm_linux-flo: DNE
trusty_linux-flo: ignored (abandoned)
trusty/esm_linux-flo: DNE (trusty was ignored [abandoned])
xenial_linux-flo: ignored (abandoned)
artful_linux-flo: DNE
bionic_linux-flo: DNE
cosmic_linux-flo: DNE
devel_linux-flo: DNE

Patches_linux-raspi2:
upstream_linux-raspi2: released (4.13~rc1)
precise/esm_linux-raspi2: DNE
trusty_linux-raspi2: DNE
trusty/esm_linux-raspi2: DNE
xenial_linux-raspi2: released (4.4.0-1104.112)
artful_linux-raspi2: not-affected (4.13.0-1004.4)
bionic_linux-raspi2: not-affected (4.13.0-1005.5)
cosmic_linux-raspi2: not-affected (4.15.0-1010.11)
devel_linux-raspi2: not-affected (4.18.0-1005.7)

Patches_linux-lts-utopic:
upstream_linux-lts-utopic: released (4.13~rc1)
precise/esm_linux-lts-utopic: DNE
trusty_linux-lts-utopic: ignored (out of standard support)
trusty/esm_linux-lts-utopic: DNE (trusty was ignored [out of standard support])
xenial_linux-lts-utopic: DNE
artful_linux-lts-utopic: DNE
bionic_linux-lts-utopic: DNE
cosmic_linux-lts-utopic: DNE
devel_linux-lts-utopic: DNE

Patches_linux-lts-vivid:
upstream_linux-lts-vivid: released (4.13~rc1)
precise/esm_linux-lts-vivid: DNE
trusty_linux-lts-vivid: ignored (was needs-triage now end-of-life)
trusty/esm_linux-lts-vivid: DNE (trusty was ignored [was needs-triage now end-of-life])
xenial_linux-lts-vivid: DNE
artful_linux-lts-vivid: DNE
bionic_linux-lts-vivid: DNE
cosmic_linux-lts-vivid: DNE
devel_linux-lts-vivid: DNE

Patches_linux-lts-wily:
upstream_linux-lts-wily: released (4.13~rc1)
precise/esm_linux-lts-wily: DNE
trusty_linux-lts-wily: ignored (out of standard support)
trusty/esm_linux-lts-wily: DNE (trusty was ignored [out of standard support])
xenial_linux-lts-wily: DNE
artful_linux-lts-wily: DNE
bionic_linux-lts-wily: DNE
cosmic_linux-lts-wily: DNE
devel_linux-lts-wily: DNE

Patches_linux-lts-xenial:
upstream_linux-lts-xenial: released (4.13~rc1)
precise/esm_linux-lts-xenial: DNE
trusty_linux-lts-xenial: released (4.4.0-143.169~14.04.2)
trusty/esm_linux-lts-xenial: released (4.4.0-143.169~14.04.2)
xenial_linux-lts-xenial: DNE
artful_linux-lts-xenial: DNE
bionic_linux-lts-xenial: DNE
cosmic_linux-lts-xenial: DNE
devel_linux-lts-xenial: DNE

Patches_linux-snapdragon:
upstream_linux-snapdragon: released (4.13~rc1)
precise/esm_linux-snapdragon: DNE
trusty_linux-snapdragon: DNE
trusty/esm_linux-snapdragon: DNE
xenial_linux-snapdragon: released (4.4.0-1108.113)
artful_linux-snapdragon: ignored (reached end-of-life)
bionic_linux-snapdragon: not-affected
cosmic_linux-snapdragon: DNE
devel_linux-snapdragon: DNE

Patches_linux-aws:
upstream_linux-aws: released (4.13~rc1)
precise/esm_linux-aws: DNE
trusty_linux-aws: released (4.4.0-1039.42)
trusty/esm_linux-aws: released (4.4.0-1039.42)
xenial_linux-aws: released (4.4.0-1077.87)
esm-infra/xenial_linux-aws: released (4.4.0-1077.87)
artful_linux-aws: DNE
bionic_linux-aws: not-affected (4.15.0-1001.1)
cosmic_linux-aws: not-affected (4.15.0-1007.7)
devel_linux-aws: not-affected (4.18.0-1002.3)

Patches_linux-hwe:
upstream_linux-hwe: released (4.13~rc1)
precise/esm_linux-hwe: DNE
trusty_linux-hwe: DNE
trusty/esm_linux-hwe: DNE
xenial_linux-hwe: released (4.13.0-26.29~16.04.2)
esm-infra/xenial_linux-hwe: released (4.13.0-26.29~16.04.2)
artful_linux-hwe: DNE
bionic_linux-hwe: not-affected (4.18.0-13.14~18.04.1)
cosmic_linux-hwe: DNE
devel_linux-hwe: DNE

Patches_linux-hwe-edge:
upstream_linux-hwe-edge: released (4.13~rc1)
precise/esm_linux-hwe-edge: DNE
trusty_linux-hwe-edge: DNE
trusty/esm_linux-hwe-edge: DNE
xenial_linux-hwe-edge: released (4.13.0-26.29~16.04.2)
esm-infra/xenial_linux-hwe-edge: released (4.13.0-26.29~16.04.2)
artful_linux-hwe-edge: DNE
bionic_linux-hwe-edge: not-affected (4.18.0-13.14~18.04.1)
cosmic_linux-hwe-edge: DNE
devel_linux-hwe-edge: DNE

Patches_linux-gke:
upstream_linux-gke: released (4.13~rc1)
precise/esm_linux-gke: DNE
trusty_linux-gke: DNE
trusty/esm_linux-gke: DNE
xenial_linux-gke: ignored (was needed now end-of-life)
artful_linux-gke: DNE
bionic_linux-gke: DNE
cosmic_linux-gke: DNE
devel_linux-gke: DNE

Patches_linux-azure:
upstream_linux-azure: released (4.13~rc1)
precise/esm_linux-azure: DNE
trusty_linux-azure: not-affected (4.15.0-1023.24~14.04.1)
trusty/esm_linux-azure: not-affected (4.15.0-1023.24~14.04.1)
xenial_linux-azure: released (4.13.0-1005.7)
esm-infra/xenial_linux-azure: released (4.13.0-1005.7)
artful_linux-azure: DNE
bionic_linux-azure: not-affected (4.15.0-1002.2)
cosmic_linux-azure: not-affected (4.15.0-1009.9)
devel_linux-azure: not-affected (4.18.0-1003.3)

Patches_linux-gcp:
upstream_linux-gcp: released (4.13~rc1)
precise/esm_linux-gcp: DNE
trusty_linux-gcp: DNE
trusty/esm_linux-gcp: DNE
xenial_linux-gcp: released (4.13.0-1002.5)
esm-infra/xenial_linux-gcp: released (4.13.0-1002.5)
artful_linux-gcp: DNE
bionic_linux-gcp: not-affected (4.15.0-1001.1)
cosmic_linux-gcp: not-affected (4.15.0-1006.6)
devel_linux-gcp: not-affected (4.18.0-1002.3)

Patches_linux-kvm:
upstream_linux-kvm: released (4.13~rc1)
precise/esm_linux-kvm: DNE
trusty_linux-kvm: DNE
trusty/esm_linux-kvm: DNE
xenial_linux-kvm: released (4.4.0-1041.47)
esm-infra/xenial_linux-kvm: released (4.4.0-1041.47)
artful_linux-kvm: DNE
bionic_linux-kvm: not-affected (4.15.0-1002.2)
cosmic_linux-kvm: not-affected (4.15.0-1008.8)
devel_linux-kvm: not-affected (4.18.0-1003.3)

Patches_linux-euclid:
upstream_linux-euclid: released (4.13~rc1)
precise/esm_linux-euclid: DNE
trusty_linux-euclid: DNE
trusty/esm_linux-euclid: DNE
xenial_linux-euclid: ignored (was needed ESM criteria)
artful_linux-euclid: DNE
bionic_linux-euclid: DNE
cosmic_linux-euclid: DNE
devel_linux-euclid: DNE

Patches_linux-oem:
upstream_linux-oem: released (4.13~rc1)
precise/esm_linux-oem: DNE
trusty_linux-oem: DNE
trusty/esm_linux-oem: DNE
xenial_linux-oem: not-affected (4.13.0-1008.9)
artful_linux-oem: DNE
bionic_linux-oem: not-affected (4.15.0-1002.3)
cosmic_linux-oem: not-affected (4.15.0-1004.5)
devel_linux-oem: not-affected (4.15.0-1021.24)

Patches_linux-azure-edge:
upstream_linux-azure-edge: released (4.13~rc1)
precise/esm_linux-azure-edge: DNE
trusty_linux-azure-edge: DNE
trusty/esm_linux-azure-edge: DNE
xenial_linux-azure-edge: not-affected (4.13.0-1003.3)
bionic_linux-azure-edge: not-affected (4.18.0-1006.6~18.04.1)
cosmic_linux-azure-edge: DNE
devel_linux-azure-edge: DNE

Patches_linux-gcp-edge:
upstream_linux-gcp-edge: released (4.13~rc1)
precise/esm_linux-gcp-edge: DNE
trusty_linux-gcp-edge: DNE
trusty/esm_linux-gcp-edge: DNE
xenial_linux-gcp-edge: DNE
bionic_linux-gcp-edge: not-affected (4.18.0-1004.5~18.04.1)
cosmic_linux-gcp-edge: DNE
devel_linux-gcp-edge: DNE

Patches_linux-aws-hwe:
upstream_linux-aws-hwe: released (4.13~rc1)
precise/esm_linux-aws-hwe: DNE
trusty_linux-aws-hwe: DNE
trusty/esm_linux-aws-hwe: DNE
xenial_linux-aws-hwe: not-affected (4.15.0-1030.31~16.04.1)
esm-infra/xenial_linux-aws-hwe: not-affected (4.15.0-1030.31~16.04.1)
bionic_linux-aws-hwe: DNE
cosmic_linux-aws-hwe: DNE
devel_linux-aws-hwe: DNE

Patches_linux-oracle:
upstream_linux-oracle: released (4.13~rc1)
precise/esm_linux-oracle: DNE
trusty_linux-oracle: DNE
trusty/esm_linux-oracle: DNE
xenial_linux-oracle: not-affected (4.15.0-1007.9~16.04.1)
esm-infra/xenial_linux-oracle: not-affected (4.15.0-1007.9~16.04.1)
bionic_linux-oracle: not-affected (4.15.0-1007.9)
cosmic_linux-oracle: not-affected
devel_linux-oracle: not-affected (4.15.0-1007.9)