{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-52456 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-52456 is a medium-severity denial of service vulnerability in Linux kernel, published on 23 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-2023-52456 and fix it if it is affected.\n\nWhat it is: CVE-2023-52456 is a medium-severity denial of service vulnerability in Linux kernel, published on 23 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-2023-52456 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-2023-52456/ (Markdown: https://insights.sbomify.com/CVE-2023-52456/index.md)","id":"CVE-2023-52456","markdown":"https://insights.sbomify.com/CVE-2023-52456/index.md","name":"CVE-2023-52456","record":{"aliases":["BELL-CVE-2023-52456","DEBIAN-CVE-2023-52456","GHSA-53gx-3hrh-cr29","UBUNTU-CVE-2023-52456"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Linux kernel serial driver","requires_auth":"low_privilege","summary":"A deadlock in the Linux kernel's i.MX serial driver can render the RS485 interface unusable if the port is closed during transmission.","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-667","name":"Improper Locking"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: imx: fix tx statemachine deadlock\n\nWhen using the serial port as RS485 port, the tx statemachine is used to\ncontrol the RTS pin to drive the RS485 transceiver TX_EN pin. When the\nTTY port is closed in the middle of a transmission (for instance during\nuserland application crash), imx_uart_shutdown disables the interface\nand disables the Transmission Complete interrupt. afer that,\nimx_uart_stop_tx bails on an incomplete transmission, to be retriggered\nby the TC interrupt. This interrupt is disabled and therefore the tx\nstatemachine never transitions out of SEND. The statemachine is in\ndeadlock now, and the TX_EN remains low, making the interface useless.\n\nimx_uart_stop_tx now checks for incomplete transmission AND whether TC\ninterrupts are enabled before bailing to be retriggered. This makes sure\nthe state machine handling is reached, and is properly set to\nWAIT_AFTER_SEND.","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":"serial: imx: fix tx statemachine deadlock","id":"CVE-2023-52456","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":6,"next":{"headline":"serial: 8250: omap: Don't skip resource freeing if pm_runtime_resume_and_get() failed","id":"CVE-2023-52457"},"packages":[],"prev":{"headline":"iommu: Don't reserve 0-length IOVA region","id":"CVE-2023-52455"},"products":["Linux"],"published":"2024-02-23","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 deadlock in the Linux kernel's i.MX serial driver can render the RS485 interface unusable if the port is closed during transmission.","url":"https://insights.sbomify.com/CVE-2023-52456/"}