CVE-2022-50036
drm/sun4i: dsi: Prevent underflow when computing packet sizes
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
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.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2025-06-18 CVE Reserved
- 2025-06-18 CVE Published
- 2025-06-18 CVE Updated
- 2025-06-24 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (5)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/133add5b5ad42b7bb5fcd59d681aef6475d08600 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.18 < 5.10.138 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.18 < 5.10.138" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.18 < 5.15.63 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.18 < 5.15.63" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.18 < 5.19.4 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.18 < 5.19.4" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.18 < 6.0 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.18 < 6.0" | en |
Affected
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