CVE-2026-89821
drm/amd/display: avoid divide-by-zero in __is_lut_linear()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: avoid divide-by-zero in __is_lut_linear() __is_lut_linear() computes the expected value of each entry with expected = i * MAX_DRM_LUT_VALUE / (size - 1); If it is ever called with a single-entry LUT, size - 1 is zero and the kernel takes a divide error (#DE). A LUT with fewer than two entries cannot describe a linear mapping anyway, so return false early instead of dividing by zero.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 16, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new unknown vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Linux / Linux
086247a4b2fba49800b27807f22bb894cd8363fb < 2320626425f3af3a25b8afb6876f205b1c6d4e64 086247a4b2fba49800b27807f22bb894cd8363fb < d1e06d5dc8f12451ce71dc068342660a34476084 086247a4b2fba49800b27807f22bb894cd8363fb < c127ace7af2b40107947a6504391f94d6fd21734 086247a4b2fba49800b27807f22bb894cd8363fb < 4d5ee095a58461b2446d7a6eb0c14c2fe3eaab44 086247a4b2fba49800b27807f22bb894cd8363fb < 5f18cd1ba873e751bf5547407ad44ea34adfbe2f 086247a4b2fba49800b27807f22bb894cd8363fb < ee28fafb50f58b847509b5240b431ddec673bdfe 086247a4b2fba49800b27807f22bb894cd8363fb < 15ee43aad0df43dfd1dbb32e7d5b951745c4b87f 086247a4b2fba49800b27807f22bb894cd8363fb < 4f40873f8a4107df2b9c8e68c947c4fd0cd519d2
Linux / Linux
4.17
References
git.kernel.org: https://git.kernel.org/stable/c/2320626425f3af3a25b8afb6876f205b1c6d4e64 git.kernel.org: https://git.kernel.org/stable/c/d1e06d5dc8f12451ce71dc068342660a34476084 git.kernel.org: https://git.kernel.org/stable/c/c127ace7af2b40107947a6504391f94d6fd21734 git.kernel.org: https://git.kernel.org/stable/c/4d5ee095a58461b2446d7a6eb0c14c2fe3eaab44 git.kernel.org: https://git.kernel.org/stable/c/5f18cd1ba873e751bf5547407ad44ea34adfbe2f git.kernel.org: https://git.kernel.org/stable/c/ee28fafb50f58b847509b5240b431ddec673bdfe git.kernel.org: https://git.kernel.org/stable/c/15ee43aad0df43dfd1dbb32e7d5b951745c4b87f git.kernel.org: https://git.kernel.org/stable/c/4f40873f8a4107df2b9c8e68c947c4fd0cd519d2