{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-52741 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-52741 is a critical use after free vulnerability in Linux kernel, published on 21 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-52741 and fix it if it is affected.\n\nWhat it is: CVE-2023-52741 is a critical use after free vulnerability in Linux kernel, published on 21 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-52741 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-2023-52741/ (Markdown: https://insights.sbomify.com/CVE-2023-52741/index.md)","id":"CVE-2023-52741","markdown":"https://insights.sbomify.com/CVE-2023-52741/index.md","name":"CVE-2023-52741","record":{"aliases":["BELL-CVE-2023-52741","DEBIAN-CVE-2023-52741","GHSA-wpg8-rfjm-9g3w","UBUNTU-CVE-2023-52741"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel CIFS","requires_auth":"none","summary":"A use-after-free vulnerability in the Linux kernel CIFS module allows attackers to cause denial of service or potentially execute code during unstable network conditions.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix use-after-free in rdata-\u003eread_into_pages()\n\nWhen the network status is unstable, use-after-free may occur when\nread data from the server.\n\n  BUG: KASAN: use-after-free in readpages_fill_pages+0x14c/0x7e0\n\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl+0x38/0x4c\n   print_report+0x16f/0x4a6\n   kasan_report+0xb7/0x130\n   readpages_fill_pages+0x14c/0x7e0\n   cifs_readv_receive+0x46d/0xa40\n   cifs_demultiplex_thread+0x121c/0x1490\n   kthread+0x16b/0x1a0\n   ret_from_fork+0x2c/0x50\n   \u003c/TASK\u003e\n\n  Allocated by task 2535:\n   kasan_save_stack+0x22/0x50\n   kasan_set_track+0x25/0x30\n   __kasan_kmalloc+0x82/0x90\n   cifs_readdata_direct_alloc+0x2c/0x110\n   cifs_readdata_alloc+0x2d/0x60\n   cifs_readahead+0x393/0xfe0\n   read_pages+0x12f/0x470\n   page_cache_ra_unbounded+0x1b1/0x240\n   filemap_get_pages+0x1c8/0x9a0\n   filemap_read+0x1c0/0x540\n   cifs_strict_readv+0x21b/0x240\n   vfs_read+0x395/0x4b0\n   ksys_read+0xb8/0x150\n   do_syscall_64+0x3f/0x90\n   entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\n  Freed by task 79:\n   kasan_save_stack+0x22/0x50\n   kasan_set_track+0x25/0x30\n   kasan_save_free_info+0x2e/0x50\n   __kasan_slab_free+0x10e/0x1a0\n   __kmem_cache_free+0x7a/0x1a0\n   cifs_readdata_release+0x49/0x60\n   process_one_work+0x46c/0x760\n   worker_thread+0x2a4/0x6f0\n   kthread+0x16b/0x1a0\n   ret_from_fork+0x2c/0x50\n\n  Last potentially related work creation:\n   kasan_save_stack+0x22/0x50\n   __kasan_record_aux_stack+0x95/0xb0\n   insert_work+0x2b/0x130\n   __queue_work+0x1fe/0x660\n   queue_work_on+0x4b/0x60\n   smb2_readv_callback+0x396/0x800\n   cifs_abort_connection+0x474/0x6a0\n   cifs_reconnect+0x5cb/0xa50\n   cifs_readv_from_socket.cold+0x22/0x6c\n   cifs_read_page_from_socket+0xc1/0x100\n   readpages_fill_pages.cold+0x2f/0x46\n   cifs_readv_receive+0x46d/0xa40\n   cifs_demultiplex_thread+0x121c/0x1490\n   kthread+0x16b/0x1a0\n   ret_from_fork+0x2c/0x50\n\nThe following function calls will cause UAF of the rdata pointer.\n\nreadpages_fill_pages\n cifs_read_page_from_socket\n  cifs_readv_from_socket\n   cifs_reconnect\n    __cifs_reconnect\n     cifs_abort_connection\n      mid-\u003ecallback() --\u003e smb2_readv_callback\n       queue_work(\u0026rdata-\u003ework)  # if the worker completes first,\n                                 # the rdata is freed\n          cifs_readv_complete\n            kref_put\n              cifs_readdata_release\n                kfree(rdata)\n return rdata-\u003e...               # UAF in readpages_fill_pages()\n\nSimilarly, this problem also occurs in the uncache_fill_pages().\n\nFix this by adjusts the order of condition judgment in the return\nstatement.","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":"cifs: Fix use-after-free in rdata-\u003eread_into_pages()","id":"CVE-2023-52741","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"use_after_free","year":"2023"},"n_packages":0,"n_references":4,"next":{"headline":"net: USB: Fix wrong-direction WARNING in plusb.c","id":"CVE-2023-52742"},"packages":[],"prev":{"headline":"powerpc/64s/interrupt: Fix interrupt exit race with security mitigation switch","id":"CVE-2023-52740"},"products":["Linux"],"published":"2024-05-21","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 use-after-free vulnerability in the Linux kernel CIFS module allows attackers to cause denial of service or potentially execute code during unstable network conditions.","url":"https://insights.sbomify.com/CVE-2023-52741/"}