{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-35803 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-35803 is a medium-severity memory corruption vulnerability in Linux kernel, published on 17 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-2024-35803 and fix it if it is affected.\n\nWhat it is: CVE-2024-35803 is a medium-severity memory corruption vulnerability in Linux kernel, published on 17 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-2024-35803 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-2024-35803/ (Markdown: https://insights.sbomify.com/CVE-2024-35803/index.md)","id":"CVE-2024-35803","markdown":"https://insights.sbomify.com/CVE-2024-35803/index.md","name":"CVE-2024-35803","record":{"aliases":["BELL-CVE-2024-35803","DEBIAN-CVE-2024-35803","GHSA-w77r-vc72-rx49","ROOT-OS-DEBIAN-11-CVE-2024-35803","ROOT-OS-UBUNTU-2204-CVE-2024-35803","UBUNTU-CVE-2024-35803"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A stack overflow in the Linux kernel EFI stub during mixed mode boot can corrupt memory, potentially allowing local attackers to execute code or escalate privileges.","user_interaction":"not_required","vuln_class":"memory_corruption"},"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":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/efistub: Call mixed mode boot services on the firmware's stack\n\nNormally, the EFI stub calls into the EFI boot services using the stack\nthat was live when the stub was entered. According to the UEFI spec,\nthis stack needs to be at least 128k in size - this might seem large but\nall asynchronous processing and event handling in EFI runs from the same\nstack and so quite a lot of space may be used in practice.\n\nIn mixed mode, the situation is a bit different: the bootloader calls\nthe 32-bit EFI stub entry point, which calls the decompressor's 32-bit\nentry point, where the boot stack is set up, using a fixed allocation\nof 16k. This stack is still in use when the EFI stub is started in\n64-bit mode, and so all calls back into the EFI firmware will be using\nthe decompressor's limited boot stack.\n\nDue to the placement of the boot stack right after the boot heap, any\nstack overruns have gone unnoticed. However, commit\n\n  5c4feadb0011983b (\"x86/decompressor: Move global symbol references to C code\")\n\nmoved the definition of the boot heap into C code, and now the boot\nstack is placed right at the base of BSS, where any overruns will\ncorrupt the end of the .data section.\n\nWhile it would be possible to work around this by increasing the size of\nthe boot stack, doing so would affect all x86 systems, and mixed mode\nsystems are a tiny (and shrinking) fraction of the x86 installed base.\n\nSo instead, record the firmware stack pointer value when entering from\nthe 32-bit firmware, and switch to this stack every time a EFI boot\nservice call is made.","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":"x86/efistub: Call mixed mode boot services on the firmware's stack","id":"CVE-2024-35803","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"memory_corruption","year":"2024"},"n_packages":0,"n_references":5,"next":{"headline":"KVM: x86: Mark target gfn of emulated atomic instruction as dirty","id":"CVE-2024-35804"},"packages":[],"prev":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2024-35802"},"products":["Linux"],"published":"2024-05-17","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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A stack overflow in the Linux kernel EFI stub during mixed mode boot can corrupt memory, potentially allowing local attackers to execute code or escalate privileges.","url":"https://insights.sbomify.com/CVE-2024-35803/"}