Medium severity5.5NVD Advisory· Published Apr 2, 2018· Updated Jun 17, 2026
CVE-2018-1093
CVE-2018-1093
Description
The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
54- osv-coords53 versionspkg:rpm/suse/kernel-default&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015pkg:rpm/suse/kernel-default&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015pkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2012pkg:rpm/suse/kernel-livepatch-SLE15_Update_1&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP3pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP3pkg:rpm/suse/kernel-source&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/kernel-source&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP3pkg:rpm/suse/kernel-syms&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/kernel-syms&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP3pkg:rpm/suse/kernel-vanilla&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015pkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSSpkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015pkg:rpm/suse/kgraft-patch-SLE12-SP1_Update_29&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSSpkg:rpm/suse/kgraft-patch-SLE12-SP1_Update_29&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/kgraft-patch-SLE12-SP2_Update_23&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/kgraft-patch-SLE12-SP2_Update_23&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/kgraft-patch-SLE12-SP2_Update_23&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/kgraft-patch-SLE12-SP2_Update_23&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/kgraft-patch-SLE12-SP2_Update_23&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/kgraft-patch-SLE12_Update_36&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSS
< 4.4.121-92.85.1+ 52 more
- (no CPE)range: < 4.4.121-92.85.1
- (no CPE)range: < 4.12.14-25.3.1
- (no CPE)range: < 4.12.14-25.3.1
- (no CPE)range: < 4.12.14-25.3.1
- (no CPE)range: < 4.12.14-25.3.1
- (no CPE)range: < 3.12.74-60.64.96.1
- (no CPE)range: < 4.4.121-92.85.1
- (no CPE)range: < 4.4.121-92.85.1
- (no CPE)range: < 3.12.61-52.136.1
- (no CPE)range: < 3.12.74-60.64.96.1
- (no CPE)range: < 4.4.121-92.85.1
- (no CPE)range: < 4.12.14-25.3.1
- (no CPE)range: < 4.4.121-92.85.1
- (no CPE)range: < 4.12.14-25.3.1
- (no CPE)range: < 3.12.74-60.64.96.1
- (no CPE)range: < 1-1.3.1
- (no CPE)range: < 4.12.14-25.3.1
- (no CPE)range: < 4.4.138-3.14.1
- (no CPE)range: < 4.4.138-3.14.1
- (no CPE)range: < 4.4.121-92.85.1
- (no CPE)range: < 4.12.14-25.3.1
- (no CPE)range: < 4.12.14-25.3.1
- (no CPE)range: < 3.12.74-60.64.96.1
- (no CPE)range: < 4.4.121-92.85.1
- (no CPE)range: < 4.4.121-92.85.1
- (no CPE)range: < 3.12.61-52.136.1
- (no CPE)range: < 3.12.74-60.64.96.1
- (no CPE)range: < 4.4.121-92.85.1
- (no CPE)range: < 4.4.121-92.85.1
- (no CPE)range: < 4.4.138-3.14.1
- (no CPE)range: < 4.4.121-92.85.1
- (no CPE)range: < 4.12.14-25.3.1
- (no CPE)range: < 3.12.74-60.64.96.1
- (no CPE)range: < 4.4.121-92.85.1
- (no CPE)range: < 4.4.121-92.85.1
- (no CPE)range: < 3.12.61-52.136.1
- (no CPE)range: < 3.12.74-60.64.96.1
- (no CPE)range: < 4.4.121-92.85.1
- (no CPE)range: < 4.4.121-92.85.1
- (no CPE)range: < 4.4.138-3.14.1
- (no CPE)range: < 4.12.14-25.3.1
- (no CPE)range: < 3.12.74-60.64.96.1
- (no CPE)range: < 3.12.61-52.136.1
- (no CPE)range: < 3.12.74-60.64.96.1
- (no CPE)range: < 4.12.14-25.3.1
- (no CPE)range: < 1-2.3.1
- (no CPE)range: < 1-2.3.1
- (no CPE)range: < 1-3.5.1
- (no CPE)range: < 1-3.5.1
- (no CPE)range: < 1-3.5.1
- (no CPE)range: < 1-3.5.1
- (no CPE)range: < 1-3.5.1
- (no CPE)range: < 1-1.3.1
Patches
Vulnerability mechanics
References
14- git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/nvdPatch
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- openwall.com/lists/oss-security/2018/03/29/1nvdMailing List
- bugzilla.kernel.org/show_bug.cginvdIssue Tracking
- lists.debian.org/debian-lts-announce/2018/06/msg00000.htmlnvd
- lists.debian.org/debian-lts-announce/2018/07/msg00015.htmlnvd
- lists.debian.org/debian-lts-announce/2018/07/msg00016.htmlnvd
- usn.ubuntu.com/3676-1/nvd
- usn.ubuntu.com/3676-2/nvd
- usn.ubuntu.com/3752-1/nvd
- usn.ubuntu.com/3752-2/nvd
- usn.ubuntu.com/3752-3/nvd
- usn.ubuntu.com/3754-1/nvd
- www.debian.org/security/2018/dsa-4188nvd
News mentions
0No linked articles in our index yet.