{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-72382 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-72382 is a high-severity vulnerability in Linux, published on 15 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-72382 and fix it if it is affected.\n\nWhat it is: CVE-2026-72382 is a high-severity vulnerability in Linux, published on 15 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-72382 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-2026-72382/ (Markdown: https://insights.sbomify.com/CVE-2026-72382/index.md)","id":"CVE-2026-72382","markdown":"https://insights.sbomify.com/CVE-2026-72382/index.md","name":"CVE-2026-72382","record":{"aliases":["BELL-CVE-2026-72382","DEBIAN-CVE-2026-72382","GHSA-xrhm-hwvc-w6q3","UBUNTU-CVE-2026-72382"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel SMB server","requires_auth":"low_privilege","summary":"A malicious SMB client can trigger an integer underflow in the Linux kernel's ksmbd module, causing excessive memory allocation and potential denial of service.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: reject undersized DACLs before parsing ACEs\n\nparse_dacl() limits the attacker-controlled ACE count by comparing it\nwith the number of minimal ACEs that fit in the DACL size. The DACL size\nfield is 16 bits, but the expression subtracts sizeof(struct smb_acl).\nBecause sizeof() is unsigned, a DACL size smaller than the ACL header\nunderflows to a large size_t.\n\nA malicious client can reach this with:\n\nSMB2_SET_INFO (InfoType=SMB2_O_INFO_SECURITY)\n  -\u003e smb2_set_info_sec()\n  -\u003e set_info_sec()\n  -\u003e parse_sec_desc()\n  -\u003e parse_dacl()\n     -\u003e init_acl_state(..., 0xffff)\n     -\u003e init_acl_state(..., 0xffff)\n     -\u003e kmalloc_objs(..., 0xffff)\n\nThus a malformed security descriptor can make num_aces pass the guard\nand drive large temporary ACL state and pointer-array allocations.\n\nReject DACLs smaller than struct smb_acl before doing the subtraction,\nso the ACE count check cannot be bypassed by the underflow.","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":"ksmbd: reject undersized DACLs before parsing ACEs","id":"CVE-2026-72382","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"sctp: fix addr_wq_timer race in sctp_free_addr_wq()","id":"CVE-2026-72383"},"packages":[],"prev":{"headline":"ksmbd: fix use-after-free of fp-\u003eowner.name in durable handle owner check","id":"CVE-2026-72381"},"products":["Linux"],"published":"2026-08-15","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":"2026-08-17","vendors":["Linux"]},"summary":"A malicious SMB client can trigger an integer underflow in the Linux kernel's ksmbd module, causing excessive memory allocation and potential denial of service.","url":"https://insights.sbomify.com/CVE-2026-72382/"}