CVE & CISA-KEV Catalog

CVE-2018-7757

MEDIUM
5.5
CVSS v3
NVD

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.

How to fix

Remediation Available
linuxDebian
Fixed in:4.15.17-1CVE-2018-7757
Fixed in:4.15.17-1CVE-2018-7757
Fixed in:4.15.17-1CVE-2018-7757
Fixed in:4.15.17-1CVE-2018-7757
linuxUbuntu
Fixed in:3.13.0-153.203USN-3698-1
Fixed in:4.4.0-127.153USN-3654-1
linux-awsUbuntu
Fixed in:4.4.0-1022.22USN-3654-2
Fixed in:4.4.0-1060.69USN-3654-1
linux-image-3.13.0-153-genericUbuntu
Fixed in:3.13.0-153.203USN-3698-1
linux-image-3.13.0-153-generic-lpaeUbuntu
Fixed in:3.13.0-153.203USN-3698-1
linux-image-3.13.0-153-lowlatencyUbuntu
Fixed in:3.13.0-153.203USN-3698-1
linux-image-3.13.0-153-powerpc-e500Ubuntu
Fixed in:3.13.0-153.203USN-3698-1
linux-image-3.13.0-153-powerpc-e500mcUbuntu
Fixed in:3.13.0-153.203USN-3698-1
linux-image-3.13.0-153-powerpc-smpUbuntu
Fixed in:3.13.0-153.203USN-3698-1
linux-image-3.13.0-153-powerpc64-embUbuntu
Fixed in:3.13.0-153.203USN-3698-1
linux-image-3.13.0-153-powerpc64-smpUbuntu
Fixed in:3.13.0-153.203USN-3698-1
linux-image-4.13.0-1031-oemUbuntu
Fixed in:4.13.0-1031.35USN-3697-2
linux-image-4.4.0-1022-awsUbuntu
Fixed in:4.4.0-1022.22USN-3654-2
linux-image-4.4.0-1026-kvmUbuntu
Fixed in:4.4.0-1026.31USN-3654-1
linux-image-4.4.0-1060-awsUbuntu
Fixed in:4.4.0-1060.69USN-3654-1
linux-image-4.4.0-1090-raspi2Ubuntu
Fixed in:4.4.0-1090.98USN-3656-1
linux-image-4.4.0-1093-snapdragonUbuntu
Fixed in:4.4.0-1093.98USN-3656-1
linux-image-4.4.0-127-genericUbuntu
Fixed in:4.4.0-127.153~14.04.1USN-3654-2
Fixed in:4.4.0-127.153USN-3654-1
linux-image-4.4.0-127-generic-lpaeUbuntu
Fixed in:4.4.0-127.153~14.04.1USN-3654-2
Fixed in:4.4.0-127.153USN-3654-1
linux-image-4.4.0-127-lowlatencyUbuntu
Fixed in:4.4.0-127.153~14.04.1USN-3654-2
Fixed in:4.4.0-127.153USN-3654-1
linux-image-4.4.0-127-powerpc-e500mcUbuntu
Fixed in:4.4.0-127.153~14.04.1USN-3654-2
Fixed in:4.4.0-127.153USN-3654-1
linux-image-4.4.0-127-powerpc-smpUbuntu
Fixed in:4.4.0-127.153~14.04.1USN-3654-2
Fixed in:4.4.0-127.153USN-3654-1
linux-image-4.4.0-127-powerpc64-embUbuntu
Fixed in:4.4.0-127.153~14.04.1USN-3654-2
Fixed in:4.4.0-127.153USN-3654-1
linux-image-4.4.0-127-powerpc64-smpUbuntu
Fixed in:4.4.0-127.153~14.04.1USN-3654-2
Fixed in:4.4.0-127.153USN-3654-1
linux-kvmUbuntu
Fixed in:4.4.0-1026.31USN-3654-1
linux-lts-xenialUbuntu
Fixed in:4.4.0-127.153~14.04.1USN-3654-2
linux-oemUbuntu
Fixed in:4.13.0-1031.35USN-3697-2
linux-raspi2Ubuntu
Fixed in:4.4.0-1090.98USN-3656-1
linux-snapdragonUbuntu
Fixed in:4.4.0-1093.98USN-3656-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.56%probability of exploitation in 30 days
42ndpercentile

Moderate risk: more likely to be exploited than 42% of all known CVEs.

References

Related Vulnerabilities

Other CWE-772 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2003-0132Medium5.087%-Fix
CVE-2017-14495High7.584%-Fix
CVE-2021-22883High7.577%-Fix
CVE-2024-2398High8.636%-Fix
CVE-2020-9375High7.528%--
CVE-1999-1127High7.518%--
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.