{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-53487 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53487 is a high-severity denial of service vulnerability in Linux kernel, published on 1 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-2023-53487 and fix it if it is affected.\n\nWhat it is: CVE-2023-53487 is a high-severity denial of service vulnerability in Linux kernel, published on 1 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-2023-53487 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-2023-53487/ (Markdown: https://insights.sbomify.com/CVE-2023-53487/index.md)","id":"CVE-2023-53487","markdown":"https://insights.sbomify.com/CVE-2023-53487/index.md","name":"CVE-2023-53487","record":{"aliases":["BELL-CVE-2023-53487","DEBIAN-CVE-2023-53487","GHSA-hpjg-565w-prfp","UBUNTU-CVE-2023-53487"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A local attacker can trigger a kernel crash via the firmware update interface when hardened usercopy is enabled, causing denial of service.","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":7.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/rtas_flash: allow user copy to flash block cache objects\n\nWith hardened usercopy enabled (CONFIG_HARDENED_USERCOPY=y), using the\n/proc/powerpc/rtas/firmware_update interface to prepare a system\nfirmware update yields a BUG():\n\n  kernel BUG at mm/usercopy.c:102!\n  Oops: Exception in kernel mode, sig: 5 [#1]\n  LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries\n  Modules linked in:\n  CPU: 0 PID: 2232 Comm: dd Not tainted 6.5.0-rc3+ #2\n  Hardware name: IBM,8408-E8E POWER8E (raw) 0x4b0201 0xf000004 of:IBM,FW860.50 (SV860_146) hv:phyp pSeries\n  NIP:  c0000000005991d0 LR: c0000000005991cc CTR: 0000000000000000\n  REGS: c0000000148c76a0 TRAP: 0700   Not tainted  (6.5.0-rc3+)\n  MSR:  8000000000029033 \u003cSF,EE,ME,IR,DR,RI,LE\u003e  CR: 24002242  XER: 0000000c\n  CFAR: c0000000001fbd34 IRQMASK: 0\n  [ ... GPRs omitted ... ]\n  NIP usercopy_abort+0xa0/0xb0\n  LR  usercopy_abort+0x9c/0xb0\n  Call Trace:\n    usercopy_abort+0x9c/0xb0 (unreliable)\n    __check_heap_object+0x1b4/0x1d0\n    __check_object_size+0x2d0/0x380\n    rtas_flash_write+0xe4/0x250\n    proc_reg_write+0xfc/0x160\n    vfs_write+0xfc/0x4e0\n    ksys_write+0x90/0x160\n    system_call_exception+0x178/0x320\n    system_call_common+0x160/0x2c4\n\nThe blocks of the firmware image are copied directly from user memory\nto objects allocated from flash_block_cache, so flash_block_cache must\nbe created using kmem_cache_create_usercopy() to mark it safe for user\naccess.\n\n[mpe: Trim and indent oops]","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":"powerpc/rtas_flash: allow user copy to flash block cache objects","id":"CVE-2023-53487","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":7,"next":{"headline":"IB/hfi1: Fix possible panic during hotplug remove","id":"CVE-2023-53488"},"packages":[],"prev":{"headline":"fs/ntfs3: Enhance the attribute size check","id":"CVE-2023-53486"},"products":["Linux"],"published":"2025-10-01","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A local attacker can trigger a kernel crash via the firmware update interface when hardened usercopy is enabled, causing denial of service.","url":"https://insights.sbomify.com/CVE-2023-53487/"}