Medium severity5.5NVD Advisory· Published Mar 8, 2018· Updated Jun 17, 2026
CVE-2018-7755
CVE-2018-7755
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
100- Range: <=4.15.7
- osv-coords99 versionspkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/kernel-vanilla&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-vanilla&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2015.4pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-default&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/kernel-default&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2012%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4%20LTSS%20EXTREME%20COREpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/kernel-default&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/kernel-docs&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4%20LTSS%20EXTREME%20COREpkg:rpm/suse/kernel-livepatch-SLE15-SP1_Update_31&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP1pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP5pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP5pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-source&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/kernel-source&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4%20LTSS%20EXTREME%20COREpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/kernel-source&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/kernel-source&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP5pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-syms&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/kernel-syms&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4%20LTSS%20EXTREME%20COREpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/kernel-syms&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/kernel-syms&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP5pkg:rpm/suse/kernel-trace&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4%20LTSS%20EXTREME%20COREpkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4%20LTSS%20EXTREME%20COREpkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_45&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_45&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_45&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_45&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_45&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_31&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5
< 4.12.14-150100.197.114.2+ 98 more
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
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- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-16.97.1
- (no CPE)range: < 4.12.14-16.97.1
- (no CPE)range: < 4.4.180-94.164.3
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.4.180-94.164.3
- (no CPE)range: < 4.12.14-122.121.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-122.121.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 3.0.101-108.138.1
- (no CPE)range: < 4.4.121-92.175.2
- (no CPE)range: < 4.4.180-94.164.3
- (no CPE)range: < 4.4.180-94.164.3
- (no CPE)range: < 4.12.14-122.121.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.4.180-94.164.3
- (no CPE)range: < 4.12.14-122.121.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-122.121.2
- (no CPE)range: < 4.4.180-94.164.3
- (no CPE)range: < 4.4.180-94.164.3
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-122.121.2
- (no CPE)range: < 3.0.101-108.138.1
- (no CPE)range: < 1-150100.3.3.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-122.121.1
- (no CPE)range: < 4.12.14-10.89.1
- (no CPE)range: < 4.12.14-10.89.1
- (no CPE)range: < 4.12.14-16.97.1
- (no CPE)range: < 4.12.14-16.97.1
- (no CPE)range: < 4.4.180-94.164.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 3.0.101-108.138.1
- (no CPE)range: < 4.4.121-92.175.2
- (no CPE)range: < 4.4.180-94.164.2
- (no CPE)range: < 4.4.180-94.164.2
- (no CPE)range: < 4.12.14-122.121.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.4.180-94.164.2
- (no CPE)range: < 4.12.14-122.121.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.4.180-94.164.2
- (no CPE)range: < 4.4.180-94.164.2
- (no CPE)range: < 4.12.14-10.89.1
- (no CPE)range: < 4.12.14-16.97.1
- (no CPE)range: < 4.12.14-16.97.1
- (no CPE)range: < 4.4.180-94.164.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 3.0.101-108.138.1
- (no CPE)range: < 4.4.121-92.175.2
- (no CPE)range: < 4.4.180-94.164.2
- (no CPE)range: < 4.4.180-94.164.2
- (no CPE)range: < 4.12.14-122.121.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.4.180-94.164.2
- (no CPE)range: < 4.12.14-122.121.2
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 4.4.180-94.164.2
- (no CPE)range: < 4.4.180-94.164.2
- (no CPE)range: < 4.12.14-10.89.1
- (no CPE)range: < 3.0.101-108.138.1
- (no CPE)range: < 3.0.101-108.138.1
- (no CPE)range: < 4.12.14-150100.197.114.2
- (no CPE)range: < 1-4.3.2
- (no CPE)range: < 1-4.3.2
- (no CPE)range: < 1-4.3.2
- (no CPE)range: < 1-4.3.2
- (no CPE)range: < 1-4.3.2
- (no CPE)range: < 1-8.5.2
Patches
Vulnerability mechanics
References
13- lkml.org/lkml/2018/3/7/1116nvdExploitThird Party Advisory
- usn.ubuntu.com/3695-1/nvdThird Party Advisory
- usn.ubuntu.com/3695-2/nvdThird Party Advisory
- usn.ubuntu.com/3696-1/nvdThird Party Advisory
- usn.ubuntu.com/3696-2/nvdThird Party Advisory
- usn.ubuntu.com/3697-1/nvdThird Party Advisory
- usn.ubuntu.com/3697-2/nvdThird Party Advisory
- usn.ubuntu.com/3698-1/nvdThird Party Advisory
- usn.ubuntu.com/3698-2/nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2019:2029nvd
- access.redhat.com/errata/RHSA-2019:2043nvd
- lists.debian.org/debian-lts-announce/2018/10/msg00003.htmlnvd
- www.debian.org/security/2018/dsa-4308nvd
News mentions
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