SB20261023211 - Memory leak in Linux kernel drm imagination driver

Description

This security bulletin contains information about 1 vulnerability.

1) Memory leak (CVE-ID: CVE-2026-98949)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 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]

The vulnerability allows a local user to retain shared memory after mappings are closed, potentially causing a denial of service through memory exhaustion.

The vulnerability exists due to a memory leak in pvr_vm_gpuva_remap() in the Linux kernel imagination graphics driver when an overlapping GPU mapping splits an existing mapping. A local user can repeatedly request overlapping mappings to accumulate unreleased GEM object references and retain backing memory, potentially exhausting available memory.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/196d4d10c1b33ae176685ff42a9994a5952b1d0f
• https://git.kernel.org/stable/c/521cf8403a185a9d5790fe324bb43ba7ea85f51c
• https://git.kernel.org/stable/c/784356aa88b82035d70e9faeded49b70cddeb29e
• https://git.kernel.org/stable/c/9caa2eca5cc8372517ff36a83f321d4326abae93