Critical· 9.8official fix available
CVE-2023-52755
A flaw in the Linux kernel's ksmbd component allows for an incorrect memory write operation. This occurs because the system fails to properly validate certain offsets against the allocated memory size.
publishedMay 21, 2024
last modifiedAug 4, 2026
sourcesNVD
severity · cvss
9.8
critical · how bad it is
exploitation · epss
28%
98th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Sep 4, 2026
An official fix is available, so this entry is kept for 30 days and then removed automatically.
01
Who is affected
Users running the Linux kernel that includes the ksmbd module.
02
Real-world impact
An attacker could potentially gain control over system memory, which could lead to a complete system compromise or a crash.
03
Why this severity
This is a critical vulnerability because it can be exploited remotely without any user interaction or authentication, potentially allowing an attacker to compromise the entire system.
04
What to do about it
official fix available
recommended steps
- 01Apply the patch that adds validation for offsets against the allocation size in the ksmbd component.
NVD-referenced vendor advisory
05
Timeline
- May 21, 2024 · May 21, 2024PublishedDisclosed and added to the National Vulnerability Database.
- Aug 4, 2026 · 2d agoAdvisory updatedThe NVD record was last revised.
- Aug 5, 2026 · 1d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.
06
How it’s attacked
Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
07
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →