CVE-2023-54280
A critical flaw in the Linux kernel’s CIFS implementation can lead to a use‑after‑free error when connecting to an IPC tree. The bug could allow an attacker to crash the system or potentially execute arbitrary code. The issue has been fixed in a kernel update.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Linux kernel users running a version that contains the unpatched CIFS IPC tree connect code.
Real-world impact
An attacker could crash the system or potentially run arbitrary code by exploiting the use‑after‑free bug.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability is exploitable over the network with no authentication, and it can compromise confidentiality, integrity, and availability.
What to do about it
- 01Upgrade the Linux kernel to a patched version that includes the fix for CVE-2023-54280.
- 02Restart the system to load the new kernel.
NVD-referenced vendor advisory
Timeline
- Dec 30, 2025 · Dec 30, 2025PublishedDisclosed and added to the National Vulnerability Database.
- Aug 4, 2026 · 1d agoAdvisory updatedThe NVD record was last revised.
- Aug 4, 2026 · 1d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.