CVE-2022-50036

Description

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.

Reserved 2025-06-18 | Published 2025-06-18 | Updated 2025-06-18 | Assigner Linux

Product status

Default status
unaffected

133add5b5ad42b7bb5fcd59d681aef6475d08600 before a1e7908f78f5a7f53f8cd83c7dcdfec974c95f26
affected

133add5b5ad42b7bb5fcd59d681aef6475d08600 before 98e28de472ef248352f04f87e29e634ebb0ec240
affected

133add5b5ad42b7bb5fcd59d681aef6475d08600 before fb837f5b83461624e525727a8f4add14b201147e
affected

133add5b5ad42b7bb5fcd59d681aef6475d08600 before 82a1356a933d8443139f8886f11b63c974a09a67
affected

Default status
affected

4.18
affected

Any version before 4.18
unaffected

5.10.138
unaffected

5.15.63
unaffected

5.19.4
unaffected

6.0
unaffected

References

git.kernel.org/...c/a1e7908f78f5a7f53f8cd83c7dcdfec974c95f26

git.kernel.org/...c/98e28de472ef248352f04f87e29e634ebb0ec240

git.kernel.org/...c/fb837f5b83461624e525727a8f4add14b201147e

git.kernel.org/...c/82a1356a933d8443139f8886f11b63c974a09a67

cve.org (CVE-2022-50036)

nvd.nist.gov (CVE-2022-50036)

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