{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-53376 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53376 is a high-severity memory corruption vulnerability in Linux kernel, published on 18 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-2023-53376 and fix it if it is affected.\n\nWhat it is: CVE-2023-53376 is a high-severity memory corruption vulnerability in Linux kernel, published on 18 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-2023-53376 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-2023-53376/ (Markdown: https://insights.sbomify.com/CVE-2023-53376/index.md)","id":"CVE-2023-53376","markdown":"https://insights.sbomify.com/CVE-2023-53376/index.md","name":"CVE-2023-53376","record":{"aliases":["AZL-72325","BELL-CVE-2023-53376","DEBIAN-CVE-2023-53376","GHSA-6f3q-hg2c-hwrx","ROOT-OS-UBUNTU-2204-CVE-2023-53376","UBUNTU-CVE-2023-53376"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel driver","requires_auth":"low_privilege","summary":"A memory corruption vulnerability in the Linux kernel mpi3mr driver allows attackers to cause a denial of service via out-of-bounds access during firmware download.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: mpi3mr: Use number of bits to manage bitmap sizes\n\nTo allocate bitmaps, the mpi3mr driver calculates sizes of bitmaps using\nbyte as unit. However, bitmap helper functions assume that bitmaps are\nallocated using unsigned long as unit. This gap causes memory access beyond\nthe bitmap sizes and results in \"BUG: KASAN: slab-out-of-bounds\".  The BUG\nwas observed at firmware download to eHBA-9600. Call trace indicated that\nthe out-of-bounds access happened in find_first_zero_bit() called from\nmpi3mr_send_event_ack() for miroc-\u003eevtack_cmds_bitmap.\n\nTo fix the BUG, do not use bytes to manage bitmap sizes. Instead, use\nnumber of bits, and call bitmap helper functions which take number of bits\nas arguments. For memory allocation, call bitmap_zalloc() instead of\nkzalloc() and krealloc(). For memory free, call bitmap_free() instead of\nkfree(). For zero clear, call bitmap_clear() instead of memset().\n\nRemove three fields for bitmap byte sizes in struct scmd_priv which are no\nlonger required. Replace the field dev_handle_bitmap_sz with\ndev_handle_bitmap_bits to keep number of bits of removepend_bitmap across\nresize.","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":"scsi: mpi3mr: Use number of bits to manage bitmap sizes","id":"CVE-2023-53376","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"memory_corruption","year":"2023"},"n_packages":0,"n_references":3,"next":{"headline":"cifs: prevent use-after-free by freeing the cfile later","id":"CVE-2023-53377"},"packages":[],"prev":{"headline":"tracing: Free error logs of tracing instances","id":"CVE-2023-53375"},"products":["Linux"],"published":"2025-09-18","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":"2026-08-05","vendors":["Linux"]},"summary":"A memory corruption vulnerability in the Linux kernel mpi3mr driver allows attackers to cause a denial of service via out-of-bounds access during firmware download.","url":"https://insights.sbomify.com/CVE-2023-53376/"}