CVE-2026-89821
CVE CVE-2026-89821EUVD EUVD-2026-80421Published 2026-09-16T10:30:53.000Z
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 086247a4b2fba49800b27807f22bb894cd8363fb <ee28fafb50f58b847509b5240b431ddec673bdfe; 4.17; 086247a4b2fba49800b27807f22bb894cd8363fb <2320626425f3af3a25b8afb6876f205b1c6d4e64; 086247a4b2fba49800b27807f22bb894cd8363fb <c127ace7af2b40107947a6504391f94d6fd21734; patch: 7.3-rc1; 086247a4b2fba49800b27807f22bb894cd8363fb <4f40873f8a4107df2b9c8e68c947c4fd0cd519d2; patch: 0; patch: 6.6.157; 086247a4b2fba49800b27807f22bb894cd8363fb <d1e06d5dc8f12451ce71dc068342660a34476084; patch: 6.12.110; patch: 7.2.5; 086247a4b2fba49800b27807f22bb894cd8363fb <5f18cd1ba873e751bf5547407ad44ea34adfbe2f; 086247a4b2fba49800b27807f22bb894cd8363fb <15ee43aad0df43dfd1dbb32e7d5b951745c4b87f; patch: 5.10.270; 086247a4b2fba49800b27807f22bb894cd8363fb <4d5ee095a58461b2446d7a6eb0c14c2fe3eaab44; patch: 6.1.188; patch: 6.18.51; patch: 5.15.221
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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