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In the Linux kernel, the following vulnerability has been resolved:
video: fbdev: arkfb: Check the size of screen before memset_io()
In the function arkfb_set_par(), the value of 'screen_size' is calculated by the user input. If the user provides the improper value, the value of 'screen_size' may larger than 'info->screen_size', which may cause the following bug:
[ 659.399066] BUG: unable to handle page fault for address: ffffc90003000000 [ 659.399077] #PF: supervisor write access in kernel mode [ 659.399079] #PF: error_code(0x0002) - not-present page [ 659.399094] RIP: 0010:memset_orig+0x33/0xb0 [ 659.399116] Call Trace: [ 659.399122] arkfb_set_par+0x143f/0x24c0 [ 659.399130] fb_set_var+0x604/0xeb0 [ 659.399161] do_fb_ioctl+0x234/0x670 [ 659.399189] fb_ioctl+0xdd/0x130
Fix the this by checking the value of 'screen_size' before memset_io().
| 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-gcp-4.15Upgrade linux-aws-fipsUpgrade linux-oracle-5.15Upgrade linux-hwe-5.4Upgrade linux-gcp-fipsUpgrade linux-hweUpgrade linux-ibm-5.4Upgrade linux-gkeopUpgrade linux-lowlatencyUpgrade linuxUpgrade linux-ibmUpgrade linux-azure-5.15Upgrade linux-azure-4.15Upgrade linux-aws-hweUpgrade linux-azure-fipsUpgrade linux-iotUpgrade linux-gcp-5.4Upgrade linux-oracle-5.4Upgrade linux-kvmUpgrade linux-azure-fdeUpgrade linux-raspiUpgrade linux-azure-5.4Upgrade linux-bluefieldUpgrade linux-riscv-5.15Upgrade linux-gcp-5.15Upgrade linux-gkeUpgrade linux-lowlatency-hwe-5.15Upgrade linux-awsUpgrade linux-hwe-5.15Upgrade linux-azureUpgrade linux-raspi-5.4Upgrade linux-nvidiaUpgrade linux-fipsUpgrade linux-aws-5.15Upgrade linux-oracleUpgrade linux-intel-iotgUpgrade linux-aws-5.4Upgrade linux-gcpUpgrade linux-realtimeUpgrade linux-intel-iotg-5.15 | 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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