CVE-2026-53047: efi/capsule-loader: fix incorrect sizeof in phys array reallocation
Published Jun 24, 2026
·Updated
efi/capsule-loader: fix incorrect sizeof in phys array reallocation
Affected Software
14 affected componentsFixes available
Linux Linux kernel
Microsoft azl3 kernel 6.6.139.1-1<6.6.143.1-1
6.6.143.1-1
Linux Linux kernel>=4.14.13<4.15
Linux Linux kernel>=4.15.1<5.10.258
Linux Linux kernel>=5.11<5.15.209
Linux Linux kernel>=5.16<6.1.175
Linux Linux kernel>=6.2<6.6.141
Linux Linux kernel>=6.7<6.12.91
Linux Linux kernel>=6.13<6.18.33
Linux Linux kernel>=6.19<7.0.10
Linux Linux kernel=4.15
Linux Linux kernel=4.15-rc7
Linux Linux kernel=4.15-rc8
Linux Linux kernel=4.15-rc9
Remediation
Event History
Jun 24, 2026
CVE Published
via MITRE·04:29 PM
Data Sourced
via MITRE·04:29 PM
Description
Data Sourced
via NVD·05:17 PM
RemedyDescriptionSeverityAffected Software
Jun 27, 2026
Data Sourced
via Microsoft·08:14 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·08:14 AM
Affected Software
Updated
via Microsoft·08:14 AM
DescriptionSeverity
Frequently Asked Questions
1
What is the severity of CVE-2026-53047?
CVE-2026-53047 has a risk score of 44, indicating it poses a significant threat.
2
How do I fix CVE-2026-53047?
To address CVE-2026-53047, it's recommended to update the Linux kernel to the latest version that includes the fix.
3
What type of vulnerability is CVE-2026-53047?
CVE-2026-53047 is classified as a Buffer Overflow vulnerability.
4
What component of the Linux kernel is affected by CVE-2026-53047?
CVE-2026-53047 affects the efi/capsule-loader component of the Linux kernel.
5
What could be the potential impact of exploiting CVE-2026-53047?
Exploiting CVE-2026-53047 could lead to memory corruption due to incorrect reallocation of the phys array.