{"id":"CVE-2026-99118","aliases":[],"title":"drm/i915/dmc: Harden DMC firmware payload parsing","titleSource":"Linux","descriptionSource":"Linux","products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"eb805623d8b161342ed9c9caf366f0a295041a6d","status":"affected","lessThan":"dfcfe2874e7c16e8460dc86ac1eeb54ea0e7f8aa","versionType":"git"},{"version":"eb805623d8b161342ed9c9caf366f0a295041a6d","status":"affected","lessThan":"05f7a2f712f8b287a98ee61a7c2c6b72dad2fc6d","versionType":"git"},{"version":"eb805623d8b161342ed9c9caf366f0a295041a6d","status":"affected","lessThan":"8bb1858db453cd4250e3b633f5d2d09206024ca6","versionType":"git"}],"defaultStatus":"unaffected","source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99118"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"4.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.2","versionType":"semver"},{"version":"6.18.59","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.13","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99118"}],"remediation":[],"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)","severity":"unknown","score":null,"published":"2026-10-28T10:34:34.627Z","modified":"2026-10-28T10:34:34.627Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://git.kernel.org/stable/c/dfcfe2874e7c16e8460dc86ac1eeb54ea0e7f8aa","https://git.kernel.org/stable/c/05f7a2f712f8b287a98ee61a7c2c6b72dad2fc6d","https://git.kernel.org/stable/c/8bb1858db453cd4250e3b633f5d2d09206024ca6"],"sources":[{"name":"CVE","id":"CVE-2026-99118","modified":"2026-10-28T10:34:34.627Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-99118"}],"assessments":[],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-29T00:30:33.731Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}