Memory leak in Linux kernel - CVE-2026-46096

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU132391

Memory leak in Linux kernel - CVE-2026-46096

Published: May 27, 2026


Vulnerability identifier: #VU132391
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-46096
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a memory leak in tpm2_read_public() when processing TPM2 public data. A local user can trigger the vulnerable code path to cause a denial of service.

The issue occurs because allocated buffer memory is not released on certain exit paths, including a successful return and an error return after an unrecognized hash algorithm.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-azure (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-raspi (Ubuntu package)

How to mitigate CVE-2026-46096

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux (Ubuntu package) - update to 7.0.0-27.27
linux-azure (Ubuntu package) - addressed in versions 7.0.0-1009.9, 7.0.0-1010.10
linux-nvidia (Ubuntu package) - update to 7.0.0-1013.13
linux-raspi (Ubuntu package) - update to 7.0.0-1014.14

External References

Related Security Bulletins