{"id":"CVE-2026-89821","published":"2026-09-16T11:16:47.503","lastModified":"2026-09-16T11:16:47.503","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: avoid divide-by-zero in __is_lut_linear()\n\n__is_lut_linear() computes the expected value of each entry with\n\n\texpected = i * MAX_DRM_LUT_VALUE / (size - 1);\n\nIf it is ever called with a single-entry LUT, size - 1 is zero and the\nkernel takes a divide error (#DE). A LUT with fewer than two entries\ncannot describe a linear mapping anyway, so return false early instead\nof dividing by zero.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/15ee43aad0df43dfd1dbb32e7d5b951745c4b87f","tags":[]},{"url":"https://git.kernel.org/stable/c/2320626425f3af3a25b8afb6876f205b1c6d4e64","tags":[]},{"url":"https://git.kernel.org/stable/c/4d5ee095a58461b2446d7a6eb0c14c2fe3eaab44","tags":[]},{"url":"https://git.kernel.org/stable/c/4f40873f8a4107df2b9c8e68c947c4fd0cd519d2","tags":[]},{"url":"https://git.kernel.org/stable/c/5f18cd1ba873e751bf5547407ad44ea34adfbe2f","tags":[]},{"url":"https://git.kernel.org/stable/c/c127ace7af2b40107947a6504391f94d6fd21734","tags":[]},{"url":"https://git.kernel.org/stable/c/d1e06d5dc8f12451ce71dc068342660a34476084","tags":[]},{"url":"https://git.kernel.org/stable/c/ee28fafb50f58b847509b5240b431ddec673bdfe","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}