{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-46941 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-46941 is a medium-severity denial of service vulnerability in Linux kernel, published on 27 Feb 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-2021-46941 and fix it if it is affected.\n\nWhat it is: CVE-2021-46941 is a medium-severity denial of service vulnerability in Linux kernel, published on 27 Feb 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-2021-46941 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-2021-46941/ (Markdown: https://insights.sbomify.com/CVE-2021-46941/index.md)","id":"CVE-2021-46941","markdown":"https://insights.sbomify.com/CVE-2021-46941/index.md","name":"CVE-2021-46941","record":{"aliases":["DEBIAN-CVE-2021-46941","GHSA-hhg2-g5jr-6wrx","UBUNTU-CVE-2021-46941"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel USB driver","requires_auth":"low_privilege","summary":"Missing soft resets during USB mode switching can cause system lockups, requiring a kernel patch to restore stability.","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":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: core: Do core softreset when switch mode\n\nAccording to the programming guide, to switch mode for DRD controller,\nthe driver needs to do the following.\n\nTo switch from device to host:\n1. Reset controller with GCTL.CoreSoftReset\n2. Set GCTL.PrtCapDir(host mode)\n3. Reset the host with USBCMD.HCRESET\n4. Then follow up with the initializing host registers sequence\n\nTo switch from host to device:\n1. Reset controller with GCTL.CoreSoftReset\n2. Set GCTL.PrtCapDir(device mode)\n3. Reset the device with DCTL.CSftRst\n4. Then follow up with the initializing registers sequence\n\nCurrently we're missing step 1) to do GCTL.CoreSoftReset and step 3) of\nswitching from host to device. John Stult reported a lockup issue seen\nwith HiKey960 platform without these steps[1]. Similar issue is observed\nwith Ferry's testing platform[2].\n\nSo, apply the required steps along with some fixes to Yu Chen's and John\nStultz's version. The main fixes to their versions are the missing wait\nfor clocks synchronization before clearing GCTL.CoreSoftReset and only\napply DCTL.CSftRst when switching from host to device.\n\n[1] https://lore.kernel.org/linux-usb/20210108015115.27920-1-john.stultz@linaro.org/\n[2] https://lore.kernel.org/linux-usb/0ba7a6ba-e6a7-9cd4-0695-64fc927e01f1@gmail.com/","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":"usb: dwc3: core: Do core softreset when switch mode","id":"CVE-2021-46941","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":4,"next":{"headline":"io_uring: fix shared sqpoll cancellation hangs","id":"CVE-2021-46942"},"packages":[],"prev":{"headline":"tools/power turbostat: Fix offset overflow issue in index converting","id":"CVE-2021-46940"},"products":["Linux"],"published":"2024-02-27","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":"Missing soft resets during USB mode switching can cause system lockups, requiring a kernel patch to restore stability.","url":"https://insights.sbomify.com/CVE-2021-46941/"}