CVE-2026-45999: erofs: fix unsigned underflow in z_erofs_lz4_handle_overlap()
Published May 27, 2026
·Updated
erofs: fix unsigned underflow in zerofslz4handleoverlap()
Affected Software
6 affected componentsFixes available
Linux Linux kernel (erofs)
Linux Linux kernel>=5.13<6.6.140
Linux Linux kernel>=6.7<6.12.88
Linux Linux kernel>=6.13<6.18.30
Linux Linux kernel>=6.19<7.0.4
Microsoft azl3 kernel 6.6.139.1-1<6.6.141.1-1
6.6.141.1-1
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.141.1-1
Event History
May 27, 2026
CVE Published
via MITRE·12:55 PM
Data Sourced
via MITRE·12:55 PM
DescriptionSeverity
Data Sourced
via NVD·02:17 PM
RemedyDescriptionSeverityWeaknessAffected Software
May 28, 2026
Data Sourced
via Microsoft·08:05 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·08:05 AM
Affected Software
Updated
via Microsoft·08:05 AM
DescriptionSeverity
Frequently Asked Questions
1
What is the severity of CVE-2026-45999?
CVE-2026-45999 has a severity rating of high, with a score of 7.1.
2
How do I fix CVE-2026-45999?
To fix CVE-2026-45999, update your Linux kernel to the latest version where the vulnerability has been patched.
3
What kind of vulnerability is CVE-2026-45999?
CVE-2026-45999 is identified as an integer underflow vulnerability.
4
What systems are affected by CVE-2026-45999?
CVE-2026-45999 affects the Linux kernel, particularly the erofs subsystem.
5
What is the risk associated with CVE-2026-45999?
The risk associated with CVE-2026-45999 is rated as 51, indicating a significant potential impact.