{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-36936 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-36936 is a medium-severity denial of service vulnerability in Linux kernel, published on 30 May 2024. 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-2024-36936 and fix it if it is affected.\n\nWhat it is: CVE-2024-36936 is a medium-severity denial of service vulnerability in Linux kernel, published on 30 May 2024. 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-2024-36936 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-2024-36936/ (Markdown: https://insights.sbomify.com/CVE-2024-36936/index.md)","id":"CVE-2024-36936","markdown":"https://insights.sbomify.com/CVE-2024-36936/index.md","name":"CVE-2024-36936","record":{"aliases":["BELL-CVE-2024-36936","DEBIAN-CVE-2024-36936","UBUNTU-CVE-2024-36936"],"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 flaw in the Linux kernel's EFI memory acceptance logic can cause soft lockups, leading to a denial of service on systems with large memory.","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-667","name":"Improper Locking"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nefi/unaccepted: touch soft lockup during memory accept\n\nCommit 50e782a86c98 (\"efi/unaccepted: Fix soft lockups caused by\nparallel memory acceptance\") has released the spinlock so other CPUs can\ndo memory acceptance in parallel and not triggers softlockup on other\nCPUs.\n\nHowever the softlock up was intermittent shown up if the memory of the\nTD guest is large, and the timeout of softlockup is set to 1 second:\n\n RIP: 0010:_raw_spin_unlock_irqrestore\n Call Trace:\n ? __hrtimer_run_queues\n \u003cIRQ\u003e\n ? hrtimer_interrupt\n ? watchdog_timer_fn\n ? __sysvec_apic_timer_interrupt\n ? __pfx_watchdog_timer_fn\n ? sysvec_apic_timer_interrupt\n \u003c/IRQ\u003e\n ? __hrtimer_run_queues\n \u003cTASK\u003e\n ? hrtimer_interrupt\n ? asm_sysvec_apic_timer_interrupt\n ? _raw_spin_unlock_irqrestore\n ? __sysvec_apic_timer_interrupt\n ? sysvec_apic_timer_interrupt\n accept_memory\n try_to_accept_memory\n do_huge_pmd_anonymous_page\n get_page_from_freelist\n __handle_mm_fault\n __alloc_pages\n __folio_alloc\n ? __tdx_hypercall\n handle_mm_fault\n vma_alloc_folio\n do_user_addr_fault\n do_huge_pmd_anonymous_page\n exc_page_fault\n ? __do_huge_pmd_anonymous_page\n asm_exc_page_fault\n __handle_mm_fault\n\nWhen the local irq is enabled at the end of accept_memory(), the\nsoftlockup detects that the watchdog on single CPU has not been fed for\na while. That is to say, even other CPUs will not be blocked by\nspinlock, the current CPU might be stunk with local irq disabled for a\nwhile, which hurts not only nmi watchdog but also softlockup.\n\nChao Gao pointed out that the memory accept could be time costly and\nthere was similar report before. Thus to avoid any softlocup detection\nduring this stage, give the softlockup a flag to skip the timeout check\nat the end of accept_memory(), by invoking touch_softlockup_watchdog().","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":"efi/unaccepted: touch soft lockup during memory accept","id":"CVE-2024-36936","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2024"},"n_packages":0,"n_references":3,"next":{"headline":"xdp: use flags field to disambiguate broadcast redirect","id":"CVE-2024-36937"},"packages":[],"prev":{"headline":"ice: ensure the copied buf is NUL terminated","id":"CVE-2024-36935"},"products":["Linux"],"published":"2024-05-30","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-23","vendors":["Linux"]},"summary":"A flaw in the Linux kernel's EFI memory acceptance logic can cause soft lockups, leading to a denial of service on systems with large memory.","url":"https://insights.sbomify.com/CVE-2024-36936/"}