CVE-2026-45941 tpm: tpm_i2c_infineon: Fix locality leak on get_burstcount() failure
A resource leak in the Infineon TPM I2C driver can cause a denial of service by exhausting localities when burst count retrieval fails.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-45941?
CVE-2026-45941 is a medium-severity denial of service vulnerability in Linux kernel, published on 27 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
tpm: tpm_i2c_infineon: Fix locality leak on get_burstcount() failure
get_burstcount() can return -EBUSY on timeout. When this happens, the function returns directly without releasing the locality that was acquired at the beginning of tpm_tis_i2c_send().
Use goto out_err to ensure proper cleanup when get_burstcount() fails.
Weakness: CWE-401
Which versions are affected by CVE-2026-45941?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-45941?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-45941 being exploited?
There is no known exploitation of CVE-2026-45941 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-45941, DEBIAN-CVE-2026-45941, GHSA-5p3c-43qg-83mf, ROOT-OS-UBUNTU-2204-CVE-2026-45941, ROOT-OS-UBUNTU-2404-CVE-2026-45941, UBUNTU-CVE-2026-45941.