{"id":"CVE-2026-89825","summary":"drm/panthor: fix firmware control interface bounds checks","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: fix firmware control interface bounds checks\n\npanthor_init_cs_iface() and panthor_init_csg_iface() validate firmware\ncontrol interface offsets with 32-bit arithmetic and the size of the host\nwrapper structures. The offsets are derived from firmware-provided strides,\nso the arithmetic can wrap before the bounds check, and the host wrapper\nsize is not the size of the firmware control interface being mapped.\n\nUse 64-bit arithmetic for the computed offsets and validate against the\nactual firmware control interface structure sizes with subtraction-based\nbounds checks. Also validate that the shared section is large enough for\nthe global control interface before using it.","modified":"2026-09-18T03:48:32.962298048Z","published":"2026-09-16T10:30:57.497Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89825.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/33ae55809aee9b4dca1d00cdee35b527f2bf8626"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3e5c7cddc0073eef6f9bb373189b11a969f1f6f6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6a47f9fd2d970674ed9dedc52fc7ab76fd015785"},{"type":"WEB","url":"https://git.kernel.org/stable/c/80c9528661c774f899281c9a72011208ff39929e"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89825.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89825"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"2718d91816eeed03c09c8abe872e45f59078768c"},{"fixed":"33ae55809aee9b4dca1d00cdee35b527f2bf8626"},{"fixed":"80c9528661c774f899281c9a72011208ff39929e"},{"fixed":"3e5c7cddc0073eef6f9bb373189b11a969f1f6f6"},{"fixed":"6a47f9fd2d970674ed9dedc52fc7ab76fd015785"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89825.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.10.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.51"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89825.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}