In the Linux kernel, the following vulnerability has been resolved:
perf/core: Fix perf_output_begin parameter is incorrectly invoked in perf_event_bpf_output
syzkaller reportes a KASAN issue with stack-out-of-bounds. The call trace is as follows: dump_stack+0x9c/0xd3 print_address_description.constprop.0+0x19/0x170 __kasan_report.cold+0x6c/0x84 kasan_report+0x3a/0x50 __perf_event_header__init_id+0x34/0x290 perf_event_header__init_id+0x48/0x60 perf_output_begin+0x4a4/0x560 perf_event_bpf_output+0x161/0x1e0 perf_iterate_sb_cpu+0x29e/0x340 perf_iterate_sb+0x4c/0xc0 perf_event_bpf_event+0x194/0x2c0 __bpf_prog_put.constprop.0+0x55/0xf0 __cls_bpf_delete_prog+0xea/0x120 [cls_bpf] cls_bpf_delete_prog_work+0x1c/0x30 [cls_bpf] process_one_work+0x3c2/0x730 worker_thread+0x93/0x650 kthread+0x1b8/0x210 ret_from_fork+0x1f/0x30
commit 267fb27352b6 ("perf: Reduce stack usage of perf_output_begin()") use on-stack struct perf_sample_data of the caller function.
However, perf_event_bpf_output uses incorrect parameter to convert small-sized data (struct perf_bpf_event) into large-sized data (struct perf_sample_data), which causes memory overwriting occurs in __perf_event_header__init_id.
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-toolsUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.15.106-64.140Upgrade python-perfUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade bpftoolUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade kernel-headersUpgrade kernel-develUpgrade perf-debuginfoUpgrade kernel-livepatch-5.10.177-158.645Upgrade kernelUpgrade python-perf-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-libbpf-staticUpgrade kernel-debuginfoUpgrade kernel-libbpfUpgrade kernel-livepatch-6.1.23-36.46Upgrade python3-perfUpgrade kernel-tools-develUpgrade kernelUpgrade kernel-headersUpgrade kernel-libbpf-develUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-toolsUpgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade perfUpgrade bpftoolUpgrade python3-perf-debuginfoUpgrade kernel-develUpgrade bpftool-debuginfo | Aug 5, 2025 | May 2, 2025 |
| Debian | — | Upgrade linux | May 5, 2025 | May 2, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade python3-perfUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade bpftoolUpgrade kernel | Sep 25, 2025 | Sep 15, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 2, 2025 |
| Ubuntu | — | Upgrade linux-lowlatency-hwe-5.15Upgrade linux-aws-5.15Upgrade linux-gcpUpgrade linux-intel-iotg-5.15Upgrade linux-azureUpgrade linux-hwe-5.15Upgrade linux-kvmUpgrade linux-intel-iotgUpgrade linux-gcp-5.15Upgrade linux-nvidia-tegraUpgrade linux-awsUpgrade linux-riscv-5.15Upgrade linux-bluefieldUpgrade linux-nvidia-tegra-5.15Upgrade linux-realtimeUpgrade linux-raspiUpgrade linux-ibm-5.15Upgrade linux-gkeUpgrade linux-ibmUpgrade linux-oracle-5.15Upgrade linuxUpgrade linux-nvidiaUpgrade linux-intel-iot-realtimeUpgrade linux-lowlatencyUpgrade linux-azure-5.15Upgrade linux-nvidia-tegra-igxUpgrade linux-gkeopUpgrade linux-xilinx-zynqmpUpgrade linux-oracle | 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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