CVE-2023-53221: bpf: Fix memleak due to fentry attach failure
Published Sep 15, 2025
·Updated
bpf: Fix memleak due to fentry attach failure
Affected Software
12 affected components
Linux Linux kernel
Linux Linux kernel>=5.10.28<5.11
Linux Linux kernel>=5.11.11<5.12
Linux Linux kernel>=5.12.1<6.1.39
Linux Linux kernel>=6.2<6.3.13
Linux Linux kernel>=6.4<6.4.4
Linux Linux kernel=5.12
Linux Linux kernel=5.12-rc5
Linux Linux kernel=5.12-rc6
Linux Linux kernel=5.12-rc7
Linux Linux kernel=5.12-rc8
Microsoft cbl2 kernel 5.15.186.1-1
Remediation
Event History
Sep 15, 2025
CVE Published
via MITRE·02:21 PM
Data Sourced
via MITRE·02:21 PM
Description
Data Sourced
via NVD·03:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Dec 5, 2025
Data Sourced
via Microsoft·01:02 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·01:02 AM
DescriptionSeverity
Frequently Asked Questions
1
What is the severity of CVE-2023-53221?
CVE-2023-53221 is considered to have a medium severity level due to potential memory leakage caused by fentry attach failures.
2
How do I fix CVE-2023-53221?
To fix CVE-2023-53221, it is recommended to update your Linux kernel to the latest version addressing this vulnerability.
3
What systems are affected by CVE-2023-53221?
CVE-2023-53221 affects various versions of the Linux kernel including versions from 5.10.28 up to 6.4.4.
4
What happens if CVE-2023-53221 is exploited?
If CVE-2023-53221 is exploited, it can lead to memory leaks that may affect system stability and resource exhaustion.
5
Is there a workaround for CVE-2023-53221?
There are no known workarounds for CVE-2023-53221; the best course of action is to apply the appropriate kernel updates.