{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-53333 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53333 is a high-severity memory corruption vulnerability in Linux kernel, published on 16 Sep 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-2023-53333 and fix it if it is affected.\n\nWhat it is: CVE-2023-53333 is a high-severity memory corruption vulnerability in Linux kernel, published on 16 Sep 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-2023-53333 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-2023-53333/ (Markdown: https://insights.sbomify.com/CVE-2023-53333/index.md)","id":"CVE-2023-53333","markdown":"https://insights.sbomify.com/CVE-2023-53333/index.md","name":"CVE-2023-53333","record":{"aliases":["BELL-CVE-2023-53333","DEBIAN-CVE-2023-53333","GHSA-r2m9-j67m-7grm","UBUNTU-CVE-2023-53333"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A stack-out-of-bounds read in the Linux kernel's DCCP conntrack module allows attackers to cause a denial of service or leak sensitive memory information.","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":8.2,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: conntrack: dccp: copy entire header to stack buffer, not just basic one\n\nEric Dumazet says:\n  nf_conntrack_dccp_packet() has an unique:\n\n  dh = skb_header_pointer(skb, dataoff, sizeof(_dh), \u0026_dh);\n\n  And nothing more is 'pulled' from the packet, depending on the content.\n  dh-\u003edccph_doff, and/or dh-\u003edccph_x ...)\n  So dccp_ack_seq() is happily reading stuff past the _dh buffer.\n\nBUG: KASAN: stack-out-of-bounds in nf_conntrack_dccp_packet+0x1134/0x11c0\nRead of size 4 at addr ffff000128f66e0c by task syz-executor.2/29371\n[..]\n\nFix this by increasing the stack buffer to also include room for\nthe extra sequence numbers and all the known dccp packet type headers,\nthen pull again after the initial validation of the basic header.\n\nWhile at it, mark packets invalid that lack 48bit sequence bit but\nwhere RFC says the type MUST use them.\n\nCompile tested only.\n\nv2: first skb_header_pointer() now needs to adjust the size to\n    only pull the generic header. (Eric)\n\nHeads-up: I intend to remove dccp conntrack support later this year.","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":"netfilter: conntrack: dccp: copy entire header to stack buffer, not just basic one","id":"CVE-2023-53333","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"memory_corruption","year":"2023"},"n_packages":0,"n_references":7,"next":{"headline":"USB: chipidea: fix memory leak with using debugfs_lookup()","id":"CVE-2023-53334"},"packages":[],"prev":{"headline":"genirq/ipi: Fix NULL pointer deref in irq_data_get_affinity_mask()","id":"CVE-2023-53332"},"products":["Linux"],"published":"2025-09-16","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":"2026-08-05","vendors":["Linux"]},"summary":"A stack-out-of-bounds read in the Linux kernel's DCCP conntrack module allows attackers to cause a denial of service or leak sensitive memory information.","url":"https://insights.sbomify.com/CVE-2023-53333/"}