In the Linux kernel, the following vulnerability has been resolved:
ftrace: Fix invalid address access in lookup_rec() when index is 0
KASAN reported follow problem:
BUG: KASAN: use-after-free in lookup_rec Read of size 8 at addr ffff000199270ff0 by task modprobe CPU: 2 Comm: modprobe Call trace: kasan_report __asan_load8 lookup_rec ftrace_location arch_check_ftrace_location check_kprobe_address_safe register_kprobe
When checking pg->records[pg->index - 1].ip in lookup_rec(), it can get a pg which is newly added to ftrace_pages_start in ftrace_process_locs(). Before the first pg->index++, index is 0 and accessing pg->records[-1].ip will cause this problem.
Don't check the ip when pg->index is 0.
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-tools-develUpgrade kernel-develUpgrade kernel-livepatch-5.10.176-157.645Upgrade perf-debuginfoUpgrade kernel-livepatch-4.14.311-233.529Upgrade perfUpgrade kernel-livepatch-5.15.104-63.140Upgrade kernel-toolsUpgrade kernel-debuginfo-common-aarch64Upgrade kernelUpgrade bpftoolUpgrade python-perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-headersUpgrade python-perf | Jun 23, 2025 | May 2, 2025 |
| Amazon_linux_2023 | — | Upgrade kernel-toolsUpgrade kernel-libbpf-develUpgrade perfUpgrade kernelUpgrade kernel-tools-develUpgrade bpftoolUpgrade python3-perfUpgrade kernel-libbpf-staticUpgrade kernel-debuginfoUpgrade kernel-develUpgrade kernel-livepatch-6.1.21-1.45Upgrade python3-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfo-common-aarch64Upgrade bpftool-debuginfoUpgrade perf-debuginfoUpgrade kernel-headersUpgrade kernel-libbpfUpgrade kernel-tools-debuginfo | Jun 24, 2025 | May 2, 2025 |
| Debian | — | Upgrade linux | May 5, 2025 | May 2, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade bpftoolUpgrade kernel-toolsUpgrade kernelUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade python3-perf | Aug 13, 2025 | Aug 9, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 2, 2025 |
| Ubuntu | — | Upgrade linux-nvidia-tegra-5.15Upgrade linux-raspi-5.4Upgrade linux-raspiUpgrade linux-awsUpgrade linux-aws-5.15Upgrade linux-iotUpgrade linux-nvidia-tegraUpgrade linux-ibm-5.4Upgrade linux-azure-fipsUpgrade linux-oracle-5.4Upgrade linuxUpgrade linux-gcp-5.4Upgrade linux-nvidia-tegra-igxUpgrade linux-hwe-5.15Upgrade linux-intel-iotgUpgrade linux-intel-iot-realtimeUpgrade linux-bluefieldUpgrade linux-ibm-5.15Upgrade linux-ibmUpgrade linux-oracleUpgrade linux-riscv-5.15Upgrade linux-gkeopUpgrade linux-realtimeUpgrade linux-xilinx-zynqmpUpgrade linux-kvmUpgrade linux-lowlatency-hwe-5.15Upgrade linux-azure-5.15Upgrade linux-fipsUpgrade linux-oracle-5.15Upgrade linux-hwe-5.4Upgrade linux-intel-iotg-5.15Upgrade linux-lowlatencyUpgrade linux-nvidiaUpgrade linux-aws-5.4Upgrade linux-aws-fipsUpgrade linux-gcp-5.15Upgrade linux-azure-5.4Upgrade linux-gcpUpgrade linux-gcp-fipsUpgrade linux-azureUpgrade linux-gke | May 8, 2025 | May 2, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | May 2, 2025 |
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