CVE-2026-53210

high

Description

In the Linux kernel, the following vulnerability has been resolved: tee: shm: fix shm leak in register_shm_helper() register_shm_helper() allocates shm before calling iov_iter_npages(). If iov_iter_npages() returns 0, the function jumps to err_ctx_put and leaks shm. This can be triggered by TEE_IOC_SHM_REGISTER with struct tee_ioctl_shm_register_data where length is 0. Jump to err_free_shm instead.

References

https://git.kernel.org/stable/c/dbf779db927414f5b37c1f666013e9b48a88cfde

https://git.kernel.org/stable/c/c10c9c48b2903f41ed4c532043b0576e86228236

https://git.kernel.org/stable/c/4277759906b44d923a38c8f59f5576501b187b0d

https://git.kernel.org/stable/c/26682f5efc276e3ad96d102019472bfbf03833b2

Details

Source: Mitre, NVD

Published: 2026-06-25

Updated: 2026-06-25

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity: High

EPSS

EPSS: 0.00175