CVE-2017-18224

EUVD-2017-9356
In the Linux kernel before 4.15, fs/ocfs2/aops.c omits use of a semaphore and consequently has a race condition for access to the extent tree during read operations in DIRECT mode, which allows local users to cause a denial of service (BUG) by modifying a certain e_cpos field.
Race Condition
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.7 MEDIUM
LOCAL
HIGH
LOW
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 15%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
𝑥
< 4.15
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
6.1.106-3
fixed
bookworm (security)
6.1.112-1
fixed
bullseye
5.10.223-1
fixed
bullseye (security)
5.10.226-1
fixed
jessie
not-affected
sid
6.11.6-1
fixed
trixie
6.11.5-1
fixed
wheezy
not-affected
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
linux
artful
ignored
bionic
not-affected
cosmic
not-affected
trusty
not-affected
xenial
not-affected
linux-armadaxp
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
dne
linux-aws
artful
dne
bionic
not-affected
cosmic
not-affected
trusty
not-affected
xenial
not-affected
linux-azure
artful
dne
bionic
not-affected
cosmic
not-affected
trusty
not-affected
xenial
Fixed 4.15.0-1013.13~16.04.2
released
linux-azure-edge
bionic
not-affected
cosmic
dne
trusty
dne
xenial
not-affected
linux-euclid
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
ignored
linux-flo
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
ignored
linux-gcp
artful
dne
bionic
not-affected
cosmic
not-affected
trusty
dne
xenial
Fixed 4.15.0-1014.14~16.04.1
released
linux-gke
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
not-affected
linux-goldfish
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
not-affected
linux-grouper
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
dne
linux-hwe
artful
dne
bionic
not-affected
cosmic
dne
trusty
dne
xenial
Fixed 4.15.0-24.26~16.04.1
released
linux-hwe-edge
artful
dne
bionic
not-affected
cosmic
dne
trusty
dne
xenial
Fixed 4.15.0-24.26~16.04.1
released
linux-kvm
artful
dne
bionic
not-affected
cosmic
not-affected
trusty
dne
xenial
not-affected
linux-linaro-omap
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
dne
linux-linaro-shared
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
dne
linux-linaro-vexpress
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
dne
linux-lts-quantal
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
dne
linux-lts-raring
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
dne
linux-lts-saucy
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
dne
linux-lts-trusty
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
dne
linux-lts-utopic
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
dne
linux-lts-vivid
artful
dne
bionic
dne
cosmic
dne
trusty
ignored
xenial
dne
linux-lts-wily
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
dne
linux-lts-xenial
artful
dne
bionic
dne
cosmic
dne
trusty
not-affected
xenial
dne
linux-maguro
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
dne
linux-mako
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
ignored
linux-manta
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
dne
linux-oem
artful
dne
bionic
not-affected
cosmic
not-affected
trusty
dne
xenial
ignored
linux-qcm-msm
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
dne
linux-raspi2
artful
ignored
bionic
not-affected
cosmic
not-affected
trusty
dne
xenial
not-affected
linux-snapdragon
artful
not-affected
bionic
not-affected
cosmic
dne
trusty
dne
xenial
not-affected
linux-ti-omap4
artful
dne
bionic
dne
cosmic
dne
trusty
dne
xenial
dne
Common Weakness Enumeration
References
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3e4c56d41eef5595035872a2ec5a483f42e8917f
http://www.securityfocus.com/bid/103353
https://github.com/torvalds/linux/commit/3e4c56d41eef5595035872a2ec5a483f42e8917f
https://www.debian.org/security/2018/dsa-4188
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3e4c56d41eef5595035872a2ec5a483f42e8917f
http://www.securityfocus.com/bid/103353
https://github.com/torvalds/linux/commit/3e4c56d41eef5595035872a2ec5a483f42e8917f
https://www.debian.org/security/2018/dsa-4188