{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-53070 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53070 is a medium-severity denial of service vulnerability in Linux kernel, published on 2 May 2025. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-53070 and fix it if it is affected.\n\nWhat it is: CVE-2023-53070 is a medium-severity denial of service vulnerability in Linux kernel, published on 2 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-53070 in the wild and no public exploit code.\n\nAffected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-53070/ (Markdown: https://insights.sbomify.com/CVE-2023-53070/index.md)","id":"CVE-2023-53070","markdown":"https://insights.sbomify.com/CVE-2023-53070/index.md","name":"CVE-2023-53070","record":{"aliases":["BELL-CVE-2023-53070","DEBIAN-CVE-2023-53070","GHSA-f3gj-m2gw-jf95","UBUNTU-CVE-2023-53070"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A bug in the Linux kernel ACPI PPTT handling causes a kernel panic when PPTT is absent during CPU hotplug, leading to denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-252","name":"Unchecked Return Value"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: PPTT: Fix to avoid sleep in the atomic context when PPTT is absent\n\nCommit 0c80f9e165f8 (\"ACPI: PPTT: Leave the table mapped for the runtime usage\")\nenabled to map PPTT once on the first invocation of acpi_get_pptt() and\nnever unmapped the same allowing it to be used at runtime with out the\nhassle of mapping and unmapping the table. This was needed to fetch LLC\ninformation from the PPTT in the cpuhotplug path which is executed in\nthe atomic context as the acpi_get_table() might sleep waiting for a\nmutex.\n\nHowever it missed to handle the case when there is no PPTT on the system\nwhich results in acpi_get_pptt() being called from all the secondary\nCPUs attempting to fetch the LLC information in the atomic context\nwithout knowing the absence of PPTT resulting in the splat like below:\n\n | BUG: sleeping function called from invalid context at kernel/locking/semaphore.c:164\n | in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 0, name: swapper/1\n | preempt_count: 1, expected: 0\n | RCU nest depth: 0, expected: 0\n | no locks held by swapper/1/0.\n | irq event stamp: 0\n | hardirqs last  enabled at (0): 0x0\n | hardirqs last disabled at (0): copy_process+0x61c/0x1b40\n | softirqs last  enabled at (0): copy_process+0x61c/0x1b40\n | softirqs last disabled at (0): 0x0\n | CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.3.0-rc1 #1\n | Call trace:\n |  dump_backtrace+0xac/0x138\n |  show_stack+0x30/0x48\n |  dump_stack_lvl+0x60/0xb0\n |  dump_stack+0x18/0x28\n |  __might_resched+0x160/0x270\n |  __might_sleep+0x58/0xb0\n |  down_timeout+0x34/0x98\n |  acpi_os_wait_semaphore+0x7c/0xc0\n |  acpi_ut_acquire_mutex+0x58/0x108\n |  acpi_get_table+0x40/0xe8\n |  acpi_get_pptt+0x48/0xa0\n |  acpi_get_cache_info+0x38/0x140\n |  init_cache_level+0xf4/0x118\n |  detect_cache_attributes+0x2e4/0x640\n |  update_siblings_masks+0x3c/0x330\n |  store_cpu_topology+0x88/0xf0\n |  secondary_start_kernel+0xd0/0x168\n |  __secondary_switched+0xb8/0xc0\n\nUpdate acpi_get_pptt() to consider the fact that PPTT is once checked and\nis not available on the system and return NULL avoiding any attempts to\nfetch PPTT and thereby avoiding any possible sleep waiting for a mutex\nin the atomic context.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"ACPI: PPTT: Fix to avoid sleep in the atomic context when PPTT is absent","id":"CVE-2023-53070","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2023"},"n_packages":0,"n_references":3,"next":{"headline":"wifi: mt76: do not run mt76_unregister_device() on unregistered hw","id":"CVE-2023-53071"},"packages":[],"prev":{"headline":"octeontx2-vf: Add missing free for alloc_percpu","id":"CVE-2023-53069"},"products":["Linux"],"published":"2025-05-02","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-23","vendors":["Linux"]},"summary":"A bug in the Linux kernel ACPI PPTT handling causes a kernel panic when PPTT is absent during CPU hotplug, leading to denial of service.","url":"https://insights.sbomify.com/CVE-2023-53070/"}