In the Linux kernel, the following vulnerability has been resolved:
ext4: add EXT4_IGET_BAD flag to prevent unexpected bad inode
There are many places that will get unhappy (and crash) when ext4_iget() returns a bad inode. However, if iget the boot loader inode, allows a bad inode to be returned, because the inode may not be initialized. This mechanism can be used to bypass some checks and cause panic. To solve this problem, we add a special iget flag EXT4_IGET_BAD. Only with this flag we'd be returning bad inode from ext4_iget(), otherwise we always return the error code if the inode is bad inode.(suggested by Jan Kara)
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 |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.10.165-143.735Upgrade python-perf-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-toolsUpgrade python-perfUpgrade kernel-headersUpgrade perfUpgrade kernel-tools-develUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfoUpgrade kernelUpgrade bpftoolUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade kernel-livepatch-5.15.90-54.138 | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linux | Oct 6, 2025 | Oct 6, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-abi-stablelistsUpgrade kernelUpgrade python3-perfUpgrade kernel-tools-libsUpgrade bpftoolUpgrade kernel-tools | Dec 12, 2025 | Dec 11, 2025 |
| Redhat_linux | — | Upgrade kernelNo solution existsUpgrade kernel-rt | Nov 14, 2025 | Oct 4, 2025 |
| Ubuntu | — | Upgrade linux-hwe-5.4Upgrade linux-azure-5.15Upgrade linux-lowlatencyUpgrade linux-intel-iot-realtimeUpgrade linux-iotUpgrade linux-aws-fipsUpgrade linux-azure-fipsUpgrade linux-ibmUpgrade linux-gkeopUpgrade linuxUpgrade linux-azure-fde-5.15Upgrade linux-ibm-5.4Upgrade linux-gcp-fipsUpgrade linux-gcp-5.4Upgrade linux-nvidia-tegra-5.15Upgrade linux-oracle-5.15Upgrade linux-fipsUpgrade linux-gkeUpgrade linux-raspiUpgrade linux-aws-5.15Upgrade linux-gcpUpgrade linux-hwe-5.15Upgrade linux-oracleUpgrade linux-lowlatency-hwe-5.15Upgrade linux-azureUpgrade linux-awsUpgrade linux-kvmUpgrade linux-intel-iotgUpgrade linux-riscv-5.15Upgrade linux-azure-5.4Upgrade linux-xilinx-zynqmpUpgrade linux-gcp-5.15Upgrade linux-realtimeUpgrade linux-bluefieldUpgrade linux-aws-5.4Upgrade linux-raspi-5.4Upgrade linux-oracle-5.4Upgrade linux-nvidiaUpgrade linux-intel-iotg-5.15 | Oct 10, 2025 | Oct 4, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 15, 2025 | Oct 4, 2025 |
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