CVE-2022-50036
drm/sun4i: dsi: Prevent underflow when computing packet sizes
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: drm/sun4i: dsi: Prevent underflow when computing packet sizes Currently, the packet overhead is subtracted using unsigned arithmetic. With a short sync pulse, this could underflow and wrap around to near the maximal u16 value. Fix this by using signed subtraction. The call to max() will correctly handle any negative numbers that are produced. Apply the same fix to the other timings, even though those subtractions are less likely to underflow.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jun 18, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
133add5b5ad42b7bb5fcd59d681aef6475d08600 < a1e7908f78f5a7f53f8cd83c7dcdfec974c95f26 133add5b5ad42b7bb5fcd59d681aef6475d08600 < 98e28de472ef248352f04f87e29e634ebb0ec240 133add5b5ad42b7bb5fcd59d681aef6475d08600 < fb837f5b83461624e525727a8f4add14b201147e 133add5b5ad42b7bb5fcd59d681aef6475d08600 < 82a1356a933d8443139f8886f11b63c974a09a67
Linux / Linux
4.18
References
git.kernel.org: https://git.kernel.org/stable/c/a1e7908f78f5a7f53f8cd83c7dcdfec974c95f26 git.kernel.org: https://git.kernel.org/stable/c/98e28de472ef248352f04f87e29e634ebb0ec240 git.kernel.org: https://git.kernel.org/stable/c/fb837f5b83461624e525727a8f4add14b201147e git.kernel.org: https://git.kernel.org/stable/c/82a1356a933d8443139f8886f11b63c974a09a67