{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2023-53817 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53817 is a high-severity vulnerability in Linux, published on 9 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-53817 and fix it if it is affected.\n\nWhat it is: CVE-2023-53817 is a high-severity vulnerability in Linux, published on 9 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-53817 in the wild and no public exploit code.\n\nAffected product: Linux. 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-2023-53817/ (Markdown: https://insights.sbomify.com/CVE-2023-53817/index.md)","id":"CVE-2023-53817","markdown":"https://insights.sbomify.com/CVE-2023-53817/index.md","name":"CVE-2023-53817","record":{"aliases":["BELL-CVE-2023-53817","DEBIAN-CVE-2023-53817","GHSA-3w8q-vg6g-cg46","UBUNTU-CVE-2023-53817"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A remote attacker can cause a kernel crash by sending a zeroed Diffie-Hellman value during NVMeTCP authentication, leading to a null pointer dereference.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/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\ncrypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()\n\nDuring NVMeTCP Authentication a controller can trigger a kernel\noops by specifying the 8192 bit Diffie Hellman group and passing\na correctly sized, but zeroed Diffie Hellamn value.\nmpi_cmp_ui() was detecting this if the second parameter was 0,\nbut 1 is passed from dh_is_pubkey_valid(). This causes the null\npointer u-\u003ed to be dereferenced towards the end of mpi_cmp_ui()","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":"crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()","id":"CVE-2023-53817","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2023"},"n_packages":0,"n_references":8,"next":{"headline":"ARM: zynq: Fix refcount leak in zynq_early_slcr_init","id":"CVE-2023-53818"},"packages":[],"prev":{"headline":"drm/amdkfd: fix potential kgd_mem UAFs","id":"CVE-2023-53816"},"products":["Linux"],"published":"2025-12-09","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-08-05","vendors":["Linux"]},"summary":"A remote attacker can cause a kernel crash by sending a zeroed Diffie-Hellman value during NVMeTCP authentication, leading to a null pointer dereference.","url":"https://insights.sbomify.com/CVE-2023-53817/"}