{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-53641 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53641 is a medium-severity denial of service vulnerability in Linux kernel, published on 7 Oct 2025. 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-2023-53641 and fix it if it is affected.\n\nWhat it is: CVE-2023-53641 is a medium-severity denial of service vulnerability in Linux kernel, published on 7 Oct 2025. 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-2023-53641 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-2023-53641/ (Markdown: https://insights.sbomify.com/CVE-2023-53641/index.md)","id":"CVE-2023-53641","markdown":"https://insights.sbomify.com/CVE-2023-53641/index.md","name":"CVE-2023-53641","record":{"aliases":["BELL-CVE-2023-53641","DEBIAN-CVE-2023-53641","GHSA-hh9m-7vg3-wpg4","UBUNTU-CVE-2023-53641"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel WiFi driver","requires_auth":"low_privilege","summary":"A memory leak in the ath9k USB WiFi driver allows attackers to cause a denial of service by triggering device deinitialization or suspend states.","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\nwifi: ath9k: hif_usb: fix memory leak of remain_skbs\n\nhif_dev-\u003eremain_skb is allocated and used exclusively in\nath9k_hif_usb_rx_stream(). It is implied that an allocated remain_skb is\nprocessed and subsequently freed (in error paths) only during the next\ncall of ath9k_hif_usb_rx_stream().\n\nSo, if the urbs are deallocated between those two calls due to the device\ndeinitialization or suspend, it is possible that ath9k_hif_usb_rx_stream()\nis not called next time and the allocated remain_skb is leaked. Our local\nSyzkaller instance was able to trigger that.\n\nremain_skb makes sense when receiving two consecutive urbs which are\nlogically linked together, i.e. a specific data field from the first skb\nindicates a cached skb to be allocated, memcpy'd with some data and\nsubsequently processed in the next call to ath9k_hif_usb_rx_stream(). Urbs\ndeallocation supposedly makes that link irrelevant so we need to free the\ncached skb in those cases.\n\nFix the leak by introducing a function to explicitly free remain_skb (if\nit is not NULL) when the rx urbs have been deallocated. remain_skb is NULL\nwhen it has not been allocated at all (hif_dev struct is kzalloced) or\nwhen it has been processed in next call to ath9k_hif_usb_rx_stream().\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.","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":"wifi: ath9k: hif_usb: fix memory leak of remain_skbs","id":"CVE-2023-53641","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2023"},"n_packages":0,"n_references":8,"next":{"headline":"x86: fix clear_user_rep_good() exception handling annotation","id":"CVE-2023-53642"},"packages":[],"prev":{"headline":"ASoC: lpass: Fix for KASAN use_after_free out of bounds","id":"CVE-2023-53640"},"products":["Linux"],"published":"2025-10-07","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A memory leak in the ath9k USB WiFi driver allows attackers to cause a denial of service by triggering device deinitialization or suspend states.","url":"https://insights.sbomify.com/CVE-2023-53641/"}