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 kernelUpgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfoUpgrade python-perfUpgrade kernel-headersUpgrade python-perf-debuginfoUpgrade kernel-develUpgrade perfUpgrade kernel-tools-develUpgrade kernel-toolsUpgrade kernel-livepatch-5.10.176-157.645Upgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade kernel-livepatch-5.15.104-63.140Upgrade kernel-livepatch-4.14.311-233.529 | Jun 23, 2025 | May 2, 2025 |
| Amazon_linux_2023 | — | Upgrade kernel-develUpgrade perf-debuginfoUpgrade kernel-livepatch-6.1.21-1.45Upgrade kernel-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade bpftool-debuginfoUpgrade kernel-headersUpgrade kernel-tools-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-libbpfUpgrade kernel-tools-develUpgrade kernel-libbpf-develUpgrade kernel-toolsUpgrade python3-perfUpgrade bpftoolUpgrade kernel-libbpf-staticUpgrade kernelUpgrade perf | Jun 24, 2025 | May 2, 2025 |
| Debian | — | Upgrade linux | May 5, 2025 | May 2, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade bpftoolUpgrade kernelUpgrade kernel-toolsUpgrade 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-lowlatencyUpgrade linux-kvmUpgrade linux-lowlatency-hwe-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-ibmUpgrade linux-realtimeUpgrade linux-gkeopUpgrade linux-gcp-5.15Upgrade linux-oracle-5.15Upgrade linux-gkeUpgrade linux-fipsUpgrade linux-nvidiaUpgrade linux-azure-5.4Upgrade linux-hwe-5.4Upgrade linux-azureUpgrade linux-azure-5.15Upgrade linux-gcp-fipsUpgrade linux-aws-fipsUpgrade linux-intel-iotg-5.15Upgrade linux-aws-5.4Upgrade linux-riscv-5.15Upgrade linux-gcpUpgrade linux-oracleUpgrade linux-ibm-5.15Upgrade linux-intel-iot-realtimeUpgrade linux-intel-iotgUpgrade linux-bluefieldUpgrade linux-raspiUpgrade linux-gcp-5.4Upgrade linuxUpgrade linux-raspi-5.4Upgrade linux-awsUpgrade linux-azure-fipsUpgrade linux-nvidia-tegra-5.15Upgrade linux-oracle-5.4Upgrade linux-nvidia-tegra-igxUpgrade linux-ibm-5.4Upgrade linux-hwe-5.15Upgrade linux-iotUpgrade linux-aws-5.15Upgrade linux-nvidia-tegra | 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 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub