{"id":"CVE-2026-99118","revision":"290ea8c5656a41068bf165b2bf4e5e9f","records":[{"revision":"290ea8c5656a41068bf165b2bf4e5e9f","observedAt":"2026-10-28T11:27:43.363+00:00","statement":{"source":"cve-program","id":"CVE-2026-99118","aliases":[],"title":"drm/i915/dmc: Harden DMC firmware payload parsing","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/i915/dmc: Harden DMC firmware payload parsing\n\nValidate the conversion of the DMC firmware size from dwords to bytes\nusing check_mul_overflow() before calculating the firmware payload size.\n\nReject zero-length payloads and zero MMIO counts in the DMC firmware\nheader so malformed firmware is caught early. Also set dmc_fw_size only\nafter the payload allocation succeeds.\n\n(cherry picked from commit efde6601a1f1daedfe3dcc2816c934ddb44e3eef)","state":0,"publishedAt":"2026-10-28T10:34:34.627+00:00","modifiedAt":"2026-10-28T10:34:34.627+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/i915/display/intel_dmc.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"eb805623d8b161342ed9c9caf366f0a295041a6d\",\n                            \"lessThan\": \"dfcfe2874e7c16e8460dc86ac1eeb54ea0e7f8aa\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"eb805623d8b161342ed9c9caf366f0a295041a6d\",\n                            \"lessThan\": \"05f7a2f712f8b287a98ee61a7c2c6b72dad2fc6d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"eb805623d8b161342ed9c9caf366f0a295041a6d\",\n                            \"lessThan\": \"8bb1858db453cd4250e3b633f5d2d09206024ca6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/i915/display/intel_dmc.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.59\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.13\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/dfcfe2874e7c16e8460dc86ac1eeb54ea0e7f8aa","https://git.kernel.org/stable/c/05f7a2f712f8b287a98ee61a7c2c6b72dad2fc6d","https://git.kernel.org/stable/c/8bb1858db453cd4250e3b633f5d2d09206024ca6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99118","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-99118","identifiers":["CVE-2026-99118"]},"retained":false,"historicalAffected":[]}],"coverage":[]}