CVE & CISA-KEV Catalog

CVE-2021-45469

HIGH
7.8
CVSS v3
NVD

Description

In __f2fs_setxattr in fs/f2fs/xattr.c in the Linux kernel through 5.15.11, there is an out-of-bounds memory access when an inode has an invalid last xattr entry.

CWE-125Out-of-bounds Read

How to fix

Remediation Available
linuxDebian
Fixed in:5.10.92-1CVE-2021-45469
Fixed in:5.15.15-1CVE-2021-45469
Fixed in:5.15.15-1CVE-2021-45469
Fixed in:5.15.15-1CVE-2021-45469
linuxUbuntu
Fixed in:4.4.0-222.255USN-5343-1
linux-awsUbuntu
Fixed in:4.4.0-1102.107USN-5343-1
Fixed in:4.4.0-1138.152USN-5343-1
linux-bluefieldUbuntu
Fixed in:5.4.0-1032.35USN-5377-1
linux-image-4.4.0-1102-awsUbuntu
Fixed in:4.4.0-1102.107USN-5343-1
linux-image-4.4.0-1103-kvmUbuntu
Fixed in:4.4.0-1103.112USN-5343-1
linux-image-4.4.0-1138-awsUbuntu
Fixed in:4.4.0-1138.152USN-5343-1
linux-image-4.4.0-222-genericUbuntu
Fixed in:4.4.0-222.255~14.04.1USN-5343-1
Fixed in:4.4.0-222.255USN-5343-1
linux-image-4.4.0-222-lowlatencyUbuntu
Fixed in:4.4.0-222.255~14.04.1USN-5343-1
Fixed in:4.4.0-222.255USN-5343-1
linux-image-5.4.0-1032-bluefieldUbuntu
Fixed in:5.4.0-1032.35USN-5377-1
linux-image-awsUbuntu
Fixed in:4.4.0.1102.100USN-5343-1
Fixed in:4.4.0.1138.143USN-5343-1
linux-image-bluefieldUbuntu
Fixed in:5.4.0.1032.33USN-5377-1
linux-image-genericUbuntu
Fixed in:4.4.0.222.229USN-5343-1
linux-image-generic-lts-xenialUbuntu
Fixed in:4.4.0.222.193USN-5343-1
linux-image-kvmUbuntu
Fixed in:4.4.0.1103.101USN-5343-1
linux-image-lowlatencyUbuntu
Fixed in:4.4.0.222.229USN-5343-1
linux-image-lowlatency-lts-xenialUbuntu
Fixed in:4.4.0.222.193USN-5343-1
linux-image-virtualUbuntu
Fixed in:4.4.0.222.229USN-5343-1
linux-image-virtual-lts-xenialUbuntu
Fixed in:4.4.0.222.193USN-5343-1
linux-kvmUbuntu
Fixed in:4.4.0-1103.112USN-5343-1
linux-lts-xenialUbuntu
Fixed in:4.4.0-222.255~14.04.1USN-5343-1

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

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

0.55%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-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2014-0160High7.5100%KEVFix
CVE-2025-5777High7.5100%KEV + RansomFix
CVE-2021-4034High7.895%KEVFix
CVE-2023-21769High7.592%-Fix
CVE-2023-49285High8.689%-Fix
CVE-2020-8794Critical9.889%-Fix
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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.