CVE-2018-7755

An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
VendorProductVersion
linuxlinux_kernel
𝑥
≤ 4.15.7
canonicalubuntu_linux
12.04
canonicalubuntu_linux
14.04
canonicalubuntu_linux
16.04
canonicalubuntu_linux
17.10
canonicalubuntu_linux
18.04
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bullseye
5.10.223-1
fixed
bullseye (security)
5.10.226-1
fixed
bookworm
6.1.106-3
fixed
bookworm (security)
6.1.112-1
fixed
trixie
6.11.5-1
fixed
sid
6.11.6-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
linux
cosmic
not-affected
bionic
Fixed 4.15.0-24.26
released
artful
Fixed 4.13.0-46.51
released
xenial
Fixed 4.4.0-130.156
released
trusty
Fixed 3.13.0-153.203
released
linux-armadaxp
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-aws
cosmic
not-affected
bionic
Fixed 4.15.0-1011.11
released
artful
dne
xenial
Fixed 4.4.0-1062.71
released
trusty
Fixed 4.4.0-1024.25
released
linux-azure
cosmic
not-affected
bionic
Fixed 4.15.0-1014.14
released
artful
dne
xenial
Fixed 4.15.0-1014.14~16.04.1
released
trusty
not-affected
linux-azure-edge
cosmic
dne
bionic
not-affected
xenial
Fixed 4.15.0-1014.14
released
trusty
dne
linux-euclid
cosmic
dne
bionic
dne
artful
dne
xenial
ignored
trusty
dne
linux-flo
cosmic
dne
bionic
dne
artful
dne
xenial
ignored
trusty
dne
linux-gcp
cosmic
not-affected
bionic
Fixed 4.15.0-1010.10
released
artful
dne
xenial
Fixed 4.15.0-1014.14~16.04.1
released
trusty
dne
linux-gke
cosmic
dne
bionic
dne
artful
dne
xenial
ignored
trusty
dne
linux-goldfish
cosmic
dne
bionic
dne
artful
dne
xenial
ignored
trusty
dne
linux-grouper
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-hwe
cosmic
dne
bionic
not-affected
artful
dne
xenial
Fixed 4.15.0-24.26~16.04.1
released
trusty
dne
linux-hwe-edge
cosmic
dne
bionic
not-affected
artful
dne
xenial
Fixed 4.15.0-24.26~16.04.1
released
trusty
dne
linux-kvm
cosmic
not-affected
bionic
Fixed 4.15.0-1012.12
released
artful
dne
xenial
Fixed 4.4.0-1029.34
released
trusty
dne
linux-linaro-omap
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-linaro-shared
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-linaro-vexpress
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-lts-quantal
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-lts-raring
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-lts-saucy
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-lts-trusty
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-lts-utopic
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-lts-vivid
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
ignored
linux-lts-wily
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-lts-xenial
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
Fixed 4.4.0-130.156~14.04.1
released
linux-maguro
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-mako
cosmic
dne
bionic
dne
artful
dne
xenial
ignored
trusty
dne
linux-manta
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-oem
cosmic
not-affected
bionic
Fixed 4.15.0-1009.12
released
artful
dne
xenial
Fixed 4.13.0-1031.35
released
trusty
dne
linux-qcm-msm
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne
linux-raspi2
cosmic
not-affected
bionic
Fixed 4.15.0-1013.14
released
artful
Fixed 4.13.0-1023.24
released
xenial
Fixed 4.4.0-1092.100
released
trusty
dne
linux-snapdragon
cosmic
dne
bionic
not-affected
artful
Fixed 4.4.0-1095.100
released
xenial
Fixed 4.4.0-1095.100
released
trusty
dne
linux-ti-omap4
cosmic
dne
bionic
dne
artful
dne
xenial
dne
trusty
dne