Medium severity5.5NVD Advisory· Published Mar 8, 2018· Updated Jun 17, 2026
CVE-2018-7757
CVE-2018-7757
Description
Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (memory consumption) via many read accesses to files in the /sys/class/sas_phy directory, as demonstrated by the /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
109- osv-coords108 versionspkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/kernel-bigmem&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/kernel-bigmem&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/kernel-bigsmp&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2012%20SP2pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2012%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg: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%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg: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%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2012%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20OpenStack%20Cloud%206pkg:rpm/suse/kernel-default&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP4pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3pkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2012pkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3pkg:rpm/suse/kernel-pae&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/kernel-pae&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/kernel-pae&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/kernel-pae&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/kernel-ppc64&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/kernel-ppc64&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP3pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2011%20SP4pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP3pkg:rpm/suse/kernel-rt_trace&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2011%20SP4pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/kernel-source&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg: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%20SP3pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/kernel-source&distro=SUSE%20Lin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< 4.4.162-4.19.2+ 107 more
- (no CPE)range: < 4.4.162-4.19.2
- (no CPE)range: < 4.4.162-4.19.2
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.0.101-0.47.106.22.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 4.4.156-94.57.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 4.4.156-94.57.1
- (no CPE)range: < 3.0.101-0.47.106.22.1
- (no CPE)range: < 3.0.101-0.47.106.22.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.12.74-60.64.88.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 4.4.156-94.57.1
- (no CPE)range: < 3.12.61-52.128.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.12.74-60.64.88.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 4.4.156-94.57.1
- (no CPE)range: < 4.4.156-94.57.1
- (no CPE)range: < 3.12.74-60.64.88.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 4.4.156-94.57.1
- (no CPE)range: < 3.12.74-60.64.88.1
- (no CPE)range: < 3.0.101-0.47.106.22.1
- (no CPE)range: < 3.0.101-0.47.106.22.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 4.4.156-94.57.1
- (no CPE)range: < 3.0.101-0.47.106.22.1
- (no CPE)range: < 3.0.101-0.47.106.22.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 4.4.162-3.26.1
- (no CPE)range: < 3.0.101.rt130-69.24.1
- (no CPE)range: < 4.4.162-3.26.1
- (no CPE)range: < 3.0.101.rt130-69.24.1
- (no CPE)range: < 4.4.162-4.19.1
- (no CPE)range: < 4.4.162-4.19.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 4.4.156-94.57.1
- (no CPE)range: < 3.0.101-0.47.106.22.1
- (no CPE)range: < 3.0.101-0.47.106.22.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.12.74-60.64.88.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 4.4.156-94.57.1
- (no CPE)range: < 3.12.61-52.128.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.12.74-60.64.88.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 4.4.156-94.57.1
- (no CPE)range: < 3.12.74-60.64.88.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 3.0.101.rt130-69.24.1
- (no CPE)range: < 4.4.162-3.26.1
- (no CPE)range: < 4.4.162-4.19.1
- (no CPE)range: < 4.4.162-4.19.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 4.4.156-94.57.1
- (no CPE)range: < 3.0.101-0.47.106.22.1
- (no CPE)range: < 3.0.101-0.47.106.22.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.12.74-60.64.88.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 4.4.156-94.57.1
- (no CPE)range: < 3.12.61-52.128.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.12.74-60.64.88.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 4.4.156-94.57.1
- (no CPE)range: < 3.12.74-60.64.88.1
- (no CPE)range: < 4.4.121-92.95.1
- (no CPE)range: < 3.0.101.rt130-69.24.1
- (no CPE)range: < 4.4.162-3.26.1
- (no CPE)range: < 3.0.101-0.47.106.22.1
- (no CPE)range: < 3.0.101-0.47.106.22.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.0.101-0.47.106.22.1
- (no CPE)range: < 3.0.101-0.47.106.22.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.12.74-60.64.88.1
- (no CPE)range: < 3.12.61-52.128.1
- (no CPE)range: < 3.0.101-108.38.1
- (no CPE)range: < 3.12.74-60.64.88.1
- (no CPE)range: < 3.12.74-60.64.88.1
- (no CPE)range: < 1-2.3.1
- (no CPE)range: < 1-2.3.1
- (no CPE)range: < 1-2.3.1
- (no CPE)range: < 1-3.4.1
- (no CPE)range: < 1-3.4.1
- (no CPE)range: < 1-3.4.1
- (no CPE)range: < 1-3.4.1
- (no CPE)range: < 1-4.3.5
- (no CPE)range: < 1-1.3.1
- (no CPE)range: < 2.7.1-9.6.1
- (no CPE)range: < 2.7.1-9.6.1
- (no CPE)range: < 2.7.1-9.6.1
- (no CPE)range: < 2.7.1-9.6.1
- (no CPE)range: < 2.7.1-9.6.1
Patches
Vulnerability mechanics
References
16- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/nvdPatchVendor Advisory
- github.com/torvalds/linux/commit/4a491b1ab11ca0556d2fda1ff1301e862a2d44c4nvdPatchThird Party Advisory
- www.securityfocus.com/bid/103348nvdThird Party AdvisoryVDB Entry
- access.redhat.com/errata/RHSA-2018:2948nvd
- access.redhat.com/errata/RHSA-2018:3083nvd
- access.redhat.com/errata/RHSA-2018:3096nvd
- lists.debian.org/debian-lts-announce/2018/05/msg00000.htmlnvd
- usn.ubuntu.com/3654-1/nvd
- usn.ubuntu.com/3654-2/nvd
- usn.ubuntu.com/3656-1/nvd
- usn.ubuntu.com/3697-1/nvd
- usn.ubuntu.com/3697-2/nvd
- usn.ubuntu.com/3698-1/nvd
- usn.ubuntu.com/3698-2/nvd
- www.debian.org/security/2018/dsa-4187nvd
- www.debian.org/security/2018/dsa-4188nvd
News mentions
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