CVE & CISA-KEV Catalog

CVE-2015-8839

MEDIUM
5.1
CVSS v3
NVD

Description

Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling.

How to fix

Remediation Available
linuxDebian
Fixed in:4.5.1-1CVE-2015-8839
Fixed in:4.5.1-1CVE-2015-8839
Fixed in:4.5.1-1CVE-2015-8839
Fixed in:4.5.1-1CVE-2015-8839
linuxUbuntu
Fixed in:4.4.0-24.43USN-3006-1
linux-image-4.4.0-1012-raspi2Ubuntu
Fixed in:4.4.0-1012.16USN-3007-1
linux-image-4.4.0-24-genericUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
Fixed in:4.4.0-24.43USN-3006-1
linux-image-4.4.0-24-generic-lpaeUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
Fixed in:4.4.0-24.43USN-3006-1
linux-image-4.4.0-24-lowlatencyUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
Fixed in:4.4.0-24.43USN-3006-1
linux-image-4.4.0-24-powerpc-e500mcUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
Fixed in:4.4.0-24.43USN-3006-1
linux-image-4.4.0-24-powerpc-smpUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
Fixed in:4.4.0-24.43USN-3006-1
linux-image-4.4.0-24-powerpc64-embUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
Fixed in:4.4.0-24.43USN-3006-1
linux-image-4.4.0-24-powerpc64-smpUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
Fixed in:4.4.0-24.43USN-3006-1
linux-lts-xenialUbuntu
Fixed in:4.4.0-24.43~14.04.1USN-3005-1
linux-raspi2Ubuntu
Fixed in:4.4.0-1012.16USN-3007-1

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 ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.35%probability of exploitation in 30 days
27thpercentile

Low risk: more likely to be exploited than 27% of all known CVEs.

References

Related Vulnerabilities

Other CWE-362 (Race Condition) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2024-6387High8.1100%-Fix
CVE-2023-36884High7.599%KEV + RansomFix
CVE-2018-15473Medium5.399%-Fix
CVE-2024-27983High8.287%-Fix
CVE-2014-0226Medium6.886%-Fix
CVE-2016-5195High7.084%KEVFix
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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 2026-05-06.