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 Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jun 20, 2025 | Jun 20, 2025 |
| Dell Powerstore Dsa2025429 | — | Upgrade Dell PowerStoreOS to the latest version | Dec 3, 2025 | Dec 2, 2025 |
| Dell Powerstore Dsa2026039 | — | Upgrade Dell PowerStoreOS to the latest version | Jan 13, 2026 | Jan 6, 2026 |
| Ubuntu | — | Upgrade linux-ibmUpgrade linux-oracle-5.15Upgrade linux-intel-iotg-5.15Upgrade linux-hwe-5.15Upgrade linux-oracleUpgrade linux-gcp-5.15Upgrade linux-azure-5.15Upgrade linux-gkeopUpgrade linux-nvidiaUpgrade linux-riscv-5.15Upgrade linux-lowlatencyUpgrade linux-intel-iotgUpgrade linux-kvmUpgrade linux-gcpUpgrade linux-azureUpgrade linux-aws-5.15Upgrade linux-realtimeUpgrade linux-lowlatency-hwe-5.15Upgrade linux-gkeUpgrade linuxUpgrade linux-raspiUpgrade linux-aws | Jun 26, 2025 | Jun 18, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Jun 18, 2025 |
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