{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-47171 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-47171 is a medium-severity denial of service vulnerability in Linux kernel, published on 25 Mar 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-2021-47171 and fix it if it is affected.\n\nWhat it is: CVE-2021-47171 is a medium-severity denial of service vulnerability in Linux kernel, published on 25 Mar 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-2021-47171 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-2021-47171/ (Markdown: https://insights.sbomify.com/CVE-2021-47171/index.md)","id":"CVE-2021-47171","markdown":"https://insights.sbomify.com/CVE-2021-47171/index.md","name":"CVE-2021-47171","record":{"aliases":["DEBIAN-CVE-2021-47171","GHSA-9vg5-4v4q-375p","UBUNTU-CVE-2021-47171"],"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 memory leak in the Linux kernel's smsc75xx USB network driver allows attackers to cause a denial of service via resource exhaustion.","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-401","name":"Missing Release of Memory after Effective Lifetime"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: fix memory leak in smsc75xx_bind\n\nSyzbot reported memory leak in smsc75xx_bind().\nThe problem was is non-freed memory in case of\nerrors after memory allocation.\n\nbacktrace:\n  [\u003cffffffff84245b62\u003e] kmalloc include/linux/slab.h:556 [inline]\n  [\u003cffffffff84245b62\u003e] kzalloc include/linux/slab.h:686 [inline]\n  [\u003cffffffff84245b62\u003e] smsc75xx_bind+0x7a/0x334 drivers/net/usb/smsc75xx.c:1460\n  [\u003cffffffff82b5b2e6\u003e] usbnet_probe+0x3b6/0xc30 drivers/net/usb/usbnet.c:1728","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":"net: usb: fix memory leak in smsc75xx_bind","id":"CVE-2021-47171","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2021"},"n_packages":0,"n_references":8,"next":{"headline":"iio: adc: ad7124: Fix potential overflow due to non sequential channel numbers","id":"CVE-2021-47172"},"packages":[],"prev":{"headline":"USB: usbfs: Don't WARN about excessively large memory allocations","id":"CVE-2021-47170"},"products":["Linux"],"published":"2024-03-25","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":"2026-05-11","vendors":["Linux"]},"summary":"A memory leak in the Linux kernel's smsc75xx USB network driver allows attackers to cause a denial of service via resource exhaustion.","url":"https://insights.sbomify.com/CVE-2021-47171/"}