In the Linux kernel, the following vulnerability has been resolved:
ACPICA: Avoid undefined behavior: applying zero offset to null pointer
ACPICA commit 770653e3ba67c30a629ca7d12e352d83c2541b1e
Before this change we see the following UBSAN stack trace in Fuchsia:
#0 0x000021e4213b3302 in acpi_ds_init_aml_walk(struct acpi_walk_state*, union acpi_parse_object*, struct acpi_namespace_node*, u8*, u32, struct acpi_evaluate_info*, u8) ../../third_party/acpica/source/components/dispatcher/dswstate.c:682 <platform-bus-x86.so>+0x233302 #1.2 0x000020d0f660777f in ubsan_get_stack_trace() compiler-rt/lib/ubsan/ubsan_diag.cpp:41 <libclang_rt.asan.so>+0x3d77f #1.1 0x000020d0f660777f in maybe_print_stack_trace() compiler-rt/lib/ubsan/ubsan_diag.cpp:51 <libclang_rt.asan.so>+0x3d77f #1 0x000020d0f660777f in ~scoped_report() compiler-rt/lib/ubsan/ubsan_diag.cpp:387 <libclang_rt.asan.so>+0x3d77f #2 0x000020d0f660b96d in handlepointer_overflow_impl() compiler-rt/lib/ubsan/ubsan_handlers.cpp:809 <libclang_rt.asan.so>+0x4196d #3 0x000020d0f660b50d in compiler-rt/lib/ubsan/ubsan_handlers.cpp:815 <libclang_rt.asan.so>+0x4150d #4 0x000021e4213b3302 in acpi_ds_init_aml_walk(struct acpi_walk_state*, union acpi_parse_object*, struct acpi_namespace_node*, u8*, u32, struct acpi_evaluate_info*, u8) ../../third_party/acpica/source/components/dispatcher/dswstate.c:682 <platform-bus-x86.so>+0x233302 #5 0x000021e4213e2369 in acpi_ds_call_control_method(struct acpi_thread_state*, struct acpi_walk_state*, union acpi_parse_object*) ../../third_party/acpica/source/components/dispatcher/dsmethod.c:605 <platform-bus-x86.so>+0x262369 #6 0x000021e421437fac in acpi_ps_parse_aml(struct acpi_walk_state*) ../../third_party/acpica/source/components/parser/psparse.c:550 <platform-bus-x86.so>+0x2b7fac #7 0x000021e4214464d2 in acpi_ps_execute_method(struct acpi_evaluate_info*) ../../third_party/acpica/source/components/parser/psxface.c:244 <platform-bus-x86.so>+0x2c64d2 #8 0x000021e4213aa052 in acpi_ns_evaluate(struct acpi_evaluate_info*) ../../third_party/acpica/source/components/namespace/nseval.c:250 <platform-bus-x86.so>+0x22a052 #9 0x000021e421413dd8 in acpi_ns_init_one_device(acpi_handle, u32, void*, void**) ../../third_party/acpica/source/components/namespace/nsinit.c:735 <platform-bus-x86.so>+0x293dd8 #10 0x000021e421429e98 in acpi_ns_walk_namespace(acpi_object_type, acpi_handle, u32, u32, acpi_walk_callback, acpi_walk_callback, void*, void**) ../../third_party/acpica/source/components/namespace/nswalk.c:298 <platform-bus-x86.so>+0x2a9e98 #11 0x000021e4214131ac in acpi_ns_initialize_devices(u32) ../../third_party/acpica/source/components/namespace/nsinit.c:268 <platform-bus-x86.so>+0x2931ac #12 0x000021e42147c40d in acpi_initialize_objects(u32) ../../third_party/acpica/source/components/utilities/utxfinit.c:304 <platform-bus-x86.so>+0x2fc40d #13 0x000021e42126d603 in acpi::acpi_impl::initialize_acpi(acpi::acpi_impl*) ../../src/devices/board/lib/acpi/acpi-impl.cc:224 <platform-bus-x86.so>+0xed603
Add a simple check that avoids incrementing a pointer by zero, but otherwise behaves as before. Note that our findings are against ACPICA 20221020, but the same code exists on master.
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 kernel-tools-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade kernel-debuginfoUpgrade bpftoolUpgrade kernel-toolsUpgrade python-perfUpgrade kernel-livepatch-5.10.184-174.730Upgrade perf-debuginfoUpgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-livepatch-4.14.318-240.529Upgrade kernel-livepatch-5.15.117-72.142Upgrade python-perf-debuginfoUpgrade kernel-tools-develUpgrade kernel-headersUpgrade perf | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade bpftool-debuginfoUpgrade bpftoolUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade kernel-libbpf-staticUpgrade kernel-debuginfoUpgrade kernel-libbpf-develUpgrade python3-perf-debuginfoUpgrade perfUpgrade python3-perfUpgrade kernel-develUpgrade kernel-libbpfUpgrade kernel-livepatch-6.1.34-56.100Upgrade kernel-tools-debuginfoUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade kernel-tools | Oct 16, 2025 | Sep 15, 2025 |
| Debian | — | Upgrade linux | Sep 17, 2025 | Sep 17, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade bpftoolUpgrade python3-perfUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade kernel-tools-libs | Feb 3, 2026 | Feb 2, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Sep 15, 2025 |
| Ubuntu | — | Upgrade linux-azureUpgrade linux-gkeopUpgrade linux-lowlatency-hwe-5.15Upgrade linux-azure-5.15Upgrade linux-intel-iotgUpgrade linux-gcp-fipsUpgrade linux-hwe-5.4Upgrade linux-oracleUpgrade linux-nvidiaUpgrade linux-gcp-5.15Upgrade linux-ibmUpgrade linux-oracle-5.15Upgrade linux-iotUpgrade linux-intel-iotg-5.15Upgrade linux-kvmUpgrade linux-aws-fipsUpgrade linux-xilinx-zynqmpUpgrade linux-raspiUpgrade linux-azure-5.4Upgrade linux-realtimeUpgrade linux-azure-fde-5.15Upgrade linux-hwe-5.15Upgrade linux-nvidia-tegra-5.15Upgrade linux-nvidia-tegraUpgrade linux-ibm-5.4Upgrade linux-fipsUpgrade linux-aws-5.4Upgrade linux-bluefieldUpgrade linuxUpgrade linux-lowlatencyUpgrade linux-awsUpgrade linux-aws-5.15Upgrade linux-azure-fipsUpgrade linux-gkeUpgrade linux-raspi-5.4Upgrade linux-nvidia-tegra-igxUpgrade linux-ibm-5.15Upgrade linux-gcpUpgrade linux-intel-iot-realtimeUpgrade linux-oracle-5.4Upgrade linux-riscv-5.15Upgrade linux-gcp-5.4 | Sep 19, 2025 | Sep 16, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 15, 2025 | Sep 15, 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