In the Linux kernel, the following vulnerability has been resolved:
usb: typec: altmodes/displayport: fix pin_assignment_show
This patch fixes negative indexing of buf array in pin_assignment_show when get_current_pin_assignments returns 0 i.e. no compatible pin assignments are found.
BUG: KASAN: use-after-free in pin_assignment_show+0x26c/0x33c ... Call trace: dump_backtrace+0x110/0x204 dump_stack_lvl+0x84/0xbc print_report+0x358/0x974 kasan_report+0x9c/0xfc __do_kernel_fault+0xd4/0x2d4 do_bad_area+0x48/0x168 do_tag_check_fault+0x24/0x38 do_mem_abort+0x6c/0x14c el1_abort+0x44/0x68 el1h_64_sync_handler+0x64/0xa4 el1h_64_sync+0x78/0x7c pin_assignment_show+0x26c/0x33c dev_attr_show+0x50/0xc0
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Dec 31, 2025 | Dec 31, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 30, 2025 |
| Ubuntu | — | Upgrade linux-raspi-5.4Upgrade linux-nvidia-tegraUpgrade linux-oracle-5.4Upgrade linux-ibm-5.15Upgrade linux-azureUpgrade linux-awsUpgrade linux-raspiUpgrade linux-lowlatency-hwe-5.15Upgrade linux-nvidia-tegra-5.15Upgrade linux-hwe-5.15Upgrade linux-gkeUpgrade linux-azure-fdeUpgrade linux-aws-5.4Upgrade linux-realtimeUpgrade linux-bluefieldUpgrade linux-aws-5.15Upgrade linux-gcp-5.15Upgrade linux-gcp-fipsUpgrade linux-fipsUpgrade linux-ibmUpgrade linux-hwe-5.4Upgrade linux-xilinx-zynqmpUpgrade linux-oracleUpgrade linux-gcpUpgrade linux-intel-iot-realtimeUpgrade linux-kvmUpgrade linux-gcp-5.4Upgrade linux-intel-iotg-5.15Upgrade linux-aws-fipsUpgrade linux-nvidiaUpgrade linux-azure-5.15Upgrade linux-intel-iotgUpgrade linux-ibm-5.4Upgrade linux-iotUpgrade linux-gkeopUpgrade linux-azure-5.4Upgrade linux-nvidia-tegra-igxUpgrade linux-azure-fipsUpgrade linux-oracle-5.15Upgrade linux-riscv-5.15Upgrade linuxUpgrade linux-lowlatency | Jan 6, 2026 | Jan 2, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Dec 30, 2025 |
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