{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-53256 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53256 is a medium-severity denial of service vulnerability in Linux kernel, published on 15 Sep 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-2023-53256 and fix it if it is affected.\n\nWhat it is: CVE-2023-53256 is a medium-severity denial of service vulnerability in Linux kernel, published on 15 Sep 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-2023-53256 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-2023-53256/ (Markdown: https://insights.sbomify.com/CVE-2023-53256/index.md)","id":"CVE-2023-53256","markdown":"https://insights.sbomify.com/CVE-2023-53256/index.md","name":"CVE-2023-53256","record":{"aliases":["BELL-CVE-2023-53256","DEBIAN-CVE-2023-53256","GHSA-vg5j-xj2v-j47w","UBUNTU-CVE-2023-53256"],"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 bug in the Linux kernel's ARM FF-A driver prevents registering multiple logical partitions, causing a denial of service during initialization.","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":"cisa-adp","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_ffa: Fix FFA device names for logical partitions\n\nEach physical partition can provide multiple services each with UUID.\nEach such service can be presented as logical partition with a unique\ncombination of VM ID and UUID. The number of distinct UUID in a system\nwill be less than or equal to the number of logical partitions.\n\nHowever, currently it fails to register more than one logical partition\nor service within a physical partition as the device name contains only\nVM ID while both VM ID and UUID are maintained in the partition information.\nThe kernel complains with the below message:\n\n  | sysfs: cannot create duplicate filename '/devices/arm-ffa-8001'\n  | CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.3.0-rc7 #8\n  | Hardware name: FVP Base RevC (DT)\n  | Call trace:\n  |  dump_backtrace+0xf8/0x118\n  |  show_stack+0x18/0x24\n  |  dump_stack_lvl+0x50/0x68\n  |  dump_stack+0x18/0x24\n  |  sysfs_create_dir_ns+0xe0/0x13c\n  |  kobject_add_internal+0x220/0x3d4\n  |  kobject_add+0x94/0x100\n  |  device_add+0x144/0x5d8\n  |  device_register+0x20/0x30\n  |  ffa_device_register+0x88/0xd8\n  |  ffa_setup_partitions+0x108/0x1b8\n  |  ffa_init+0x2ec/0x3a4\n  |  do_one_initcall+0xcc/0x240\n  |  do_initcall_level+0x8c/0xac\n  |  do_initcalls+0x54/0x94\n  |  do_basic_setup+0x1c/0x28\n  |  kernel_init_freeable+0x100/0x16c\n  |  kernel_init+0x20/0x1a0\n  |  ret_from_fork+0x10/0x20\n  | kobject_add_internal failed for arm-ffa-8001 with -EEXIST, don't try to\n  | register things with the same name in the same directory.\n  | arm_ffa arm-ffa: unable to register device arm-ffa-8001 err=-17\n  | ARM FF-A: ffa_setup_partitions: failed to register partition ID 0x8001\n\nBy virtue of being random enough to avoid collisions when generated in a\ndistributed system, there is no way to compress UUID keys to the number\nof bits required to identify each. We can eliminate '-' in the name but\nit is not worth eliminating 4 bytes and add unnecessary logic for doing\nthat. Also v1.0 doesn't provide the UUID of the partitions which makes\nit hard to use the same for the device name.\n\nSo to keep it simple, let us alloc an ID using ida_alloc() and append the\nsame to \"arm-ffa\" to make up a unique device name. Also stash the id value\nin ffa_dev to help freeing the ID later when the device is destroyed.","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":"firmware: arm_ffa: Fix FFA device names for logical partitions","id":"CVE-2023-53256","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":4,"next":{"headline":"wifi: mac80211: check S1G action frame size","id":"CVE-2023-53257"},"packages":[],"prev":{"headline":"firmware: stratix10-svc: Fix a potential resource leak in svc_create_memory_pool()","id":"CVE-2023-53255"},"products":["Linux"],"published":"2025-09-15","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":"A bug in the Linux kernel's ARM FF-A driver prevents registering multiple logical partitions, causing a denial of service during initialization.","url":"https://insights.sbomify.com/CVE-2023-53256/"}