In the Linux kernel, the following vulnerability has been resolved:
tty: serial: uartlite: register uart driver in init
When two instances of uart devices are probing, a concurrency race can occur. If one thread calls uart_register_driver function, which first allocates and assigns memory to 'uart_state' member of uart_driver structure, the other instance can bypass uart driver registration and call ulite_assign. This calls uart_add_one_port, which expects the uart driver to be fully initialized. This leads to a kernel panic due to a null pointer dereference:
[ 8.143581] BUG: kernel NULL pointer dereference, address: 00000000000002b8 [ 8.156982] #PF: supervisor write access in kernel mode [ 8.156984] #PF: error_code(0x0002) - not-present page [ 8.156986] PGD 0 P4D 0 ... [ 8.180668] RIP: 0010:mutex_lock+0x19/0x30 [ 8.188624] Call Trace: [ 8.188629] ? __die_body.cold+0x1a/0x1f [ 8.195260] ? page_fault_oops+0x15c/0x290 [ 8.209183] ? __irq_resolve_mapping+0x47/0x80 [ 8.209187] ? exc_page_fault+0x64/0x140 [ 8.209190] ? asm_exc_page_fault+0x22/0x30 [ 8.209196] ? mutex_lock+0x19/0x30 [ 8.223116] uart_add_one_port+0x60/0x440 [ 8.223122] ? proc_tty_register_driver+0x43/0x50 [ 8.223126] ? tty_register_driver+0x1ca/0x1e0 [ 8.246250] ulite_probe+0x357/0x4b0 [uartlite]
To prevent it, move uart driver registration in to init function. This will ensure that uart_driver is always registered when probe function is called.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-livepatch-5.15.187-130.192Upgrade python-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade bpftoolUpgrade kernelUpgrade kernel-tools-debuginfoUpgrade bpftool-debuginfoUpgrade python-perfUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade perfUpgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade kernel-headers | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel6.12-debuginfoUpgrade kernelUpgrade kernel6.12-libbpfUpgrade kernel-libbpf-staticUpgrade python3-perf6.12-debuginfoUpgrade kernel6.12-tools-develUpgrade perfUpgrade kernel6.12-develUpgrade kernel-develUpgrade kernel-modules-extra-commonUpgrade kernel6.12-libbpf-develUpgrade kernel-tools-develUpgrade python3-perfUpgrade kernel-livepatch-6.12.37-61.105Upgrade perf6.12-debuginfoUpgrade kernel-headersUpgrade kernel-libbpf-develUpgrade bpftool6.12Upgrade kernel6.12-toolsUpgrade python3-perf6.12Upgrade kernel6.12-tools-debuginfoUpgrade kernel-debuginfoUpgrade bpftoolUpgrade kernel6.12-libbpf-staticUpgrade kernel6.12-libbpf-debuginfoUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel-toolsUpgrade kernel6.12Upgrade python3-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel6.12-modules-extra-commonUpgrade kernel-libbpf-debuginfoUpgrade kernel6.12-headersUpgrade perf6.12Upgrade kernel-libbpfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel6.12-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-livepatch-6.1.144-170.251Upgrade kernel-modules-extraUpgrade bpftool6.12-debuginfoUpgrade kernel6.12-modules-extra | Sep 9, 2025 | Jul 9, 2025 |
| Debian | — | Upgrade linux-6.1Upgrade linux | Jul 10, 2025 | Jul 10, 2025 |
| Oracle_linux | — | Upgrade kernel-uek | Sep 10, 2025 | Jul 9, 2025 |
| Redhat_linux | — | No solution exists | Jul 10, 2025 | Jul 9, 2025 |
| Ubuntu | — | Upgrade linux-image-6.14.0-1018-gcpUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-xilinx-6.8Upgrade linux-image-5.15.0-1090-oracleUpgrade linux-image-5.15.0-1087-nvidia-lowlatencyUpgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-generic-64kUpgrade linux-image-5.15.0-156-fipsUpgrade linux-image-5.15.0-1092-aws-fipsUpgrade linux-image-aws-64k-6.8Upgrade linux-image-genericUpgrade linux-image-6.8.0-100-fipsUpgrade linux-image-gcp-64k-6.14Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-intel-iotgUpgrade linux-image-5.15.0-156-generic-64kUpgrade linux-image-5.15.0-1096-azure-fipsUpgrade linux-image-aws-64kUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-aws-lts-24.04Upgrade linux-image-oracle-64kUpgrade linux-image-raspi-realtimeUpgrade linux-image-realtime-5.15Upgrade linux-image-azure-fips-6.8Upgrade linux-image-oem-24.04aUpgrade linux-image-raspi-6.8Upgrade linux-image-nvidia-tegraUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-oem-24.04Upgrade linux-image-oem-22.04dUpgrade linux-image-azure-lts-24.04Upgrade linux-image-6.14.0-1014-azureUpgrade linux-image-realtime-6.8.1Upgrade linux-image-6.14.0-1016-raspiUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-generic-6.8Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-oem-22.04aUpgrade linux-image-5.15.0-156-generic-lpaeUpgrade linux-image-nvidiaUpgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-gcp-6.14Upgrade linux-image-generic-64k-5.15Upgrade linux-image-6.8.0-1046-azureUpgrade linux-image-intelUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-6.14.0-1014-oemUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-gke-6.8Upgrade linux-image-6.14.0-34-genericUpgrade linux-image-generic-6.14Upgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-azure-5.15Upgrade linux-image-azure-fips-5.15Upgrade linux-image-xilinxUpgrade linux-image-lowlatency-5.15Upgrade linux-image-oem-22.04cUpgrade linux-image-gkeop-5.15Upgrade linux-image-raspi-6.14Upgrade linux-image-aws-fips-5.15Upgrade linux-image-virtual-6.8Upgrade linux-image-6.14.0-1007-azure-nvidiaUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-lowlatencyUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-raspi-5.15Upgrade linux-image-realtime-6.14Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-5.15.0-1086-ibmUpgrade linux-image-virtual-6.14Upgrade linux-image-5.15.0-156-genericUpgrade linux-image-ibm-classicUpgrade linux-image-gcpUpgrade linux-image-fips-5.15Upgrade linux-image-6.14.0-1014-realtimeUpgrade linux-image-aws-6.14Upgrade linux-image-6.8.0-1051-azureUpgrade linux-image-raspiUpgrade linux-image-6.14.0-1015-oracleUpgrade linux-image-gcp-64kUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-gke-64k-6.8Upgrade linux-image-6.8.0-1046-awsUpgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-azure-6.8Upgrade linux-image-gcp-fipsUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-oracle-5.15Upgrade linux-image-generic-lpae-5.15Upgrade linux-image-5.15.0-1034-nvidia-tegra-igxUpgrade linux-image-5.15.0-1075-gkeopUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-oem-24.04cUpgrade linux-image-aws-6.8Upgrade linux-image-gkeUpgrade linux-image-fips-6.8Upgrade linux-image-kvm-5.15Upgrade linux-image-lowlatency-64kUpgrade linux-image-ibm-6.8Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-oracle-6.8Upgrade linux-image-azure-nvidiaUpgrade linux-image-aws-64k-6.14Upgrade linux-image-oem-22.04bUpgrade linux-image-oracle-64k-6.14Upgrade linux-image-gkeopUpgrade linux-image-ibmUpgrade linux-image-nvidia-5.15Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-gke-5.15Upgrade linux-image-nvidia-64kUpgrade linux-image-5.15.0-1092-aws-64kUpgrade linux-image-6.14.0-1015-awsUpgrade linux-image-azure-lts-22.04Upgrade linux-image-azureUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.8.0-100-genericUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-5.15.0-156-lowlatency-64kUpgrade linux-image-oracleUpgrade linux-image-5.15.0-1092-realtimeUpgrade linux-image-5.15.0-1092-gcp-fipsUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-5.15.0-1092-awsUpgrade linux-image-5.15.0-1034-nvidia-tegra-igx-rtUpgrade linux-image-oem-6.14Upgrade linux-image-generic-5.15Upgrade linux-image-6.14.0-1015-oracle-64kUpgrade linux-image-5.15.0-1088-kvmUpgrade linux-image-lowlatency-6.8Upgrade linux-image-realtimeUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-aws-5.15Upgrade linux-image-awsUpgrade linux-image-5.15.0-1092-gcpUpgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-azure-fipsUpgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-5.15.0-1045-nvidia-tegraUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-gke-64kUpgrade linux-image-5.15.0-1085-intel-iot-realtimeUpgrade linux-image-oem-22.04Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-nvidia-tegra-igxUpgrade linux-image-aws-lts-22.04Upgrade linux-image-5.15.0-1089-gkeUpgrade linux-image-virtualUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-oracle-6.14Upgrade linux-image-kvmUpgrade linux-image-5.15.0-156-lowlatencyUpgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-fipsUpgrade linux-image-aws-fips-6.8Upgrade linux-image-6.14.0-1018-gcp-64kUpgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-aws-fipsUpgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-gkeop-6.8Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-gcp-5.15Upgrade linux-image-5.15.0-1087-nvidiaUpgrade linux-image-5.15.0-1087-intel-iotgUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-raspi-nolpaeUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-ibm-5.15Upgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-5.15.0-1056-xilinx-zynqmpUpgrade linux-image-5.15.0-1045-nvidia-tegra-rtUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-generic-lpaeUpgrade linux-image-generic-64k-6.14Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-6.14.0-34-generic-64kUpgrade linux-image-5.15.0-1096-azureUpgrade linux-image-oem-24.04bUpgrade linux-image-6.14.0-1015-aws-64kUpgrade linux-image-gcp-6.8Upgrade linux-image-5.15.0-1086-raspiUpgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-aws-64k-5.15Upgrade linux-image-azure-nvidia-6.14Upgrade linux-image-azure-cvmUpgrade linux-image-azure-6.14Upgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-virtual-5.15Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-generic-64k-6.8 | Jul 14, 2025 | Jul 9, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 10, 2025 | Jul 9, 2025 |
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