{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-53629 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53629 is a critical use after free vulnerability in Linux kernel, published on 7 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-53629 and fix it if it is affected.\n\nWhat it is: CVE-2023-53629 is a critical use after free vulnerability in Linux kernel, published on 7 Oct 2025. 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-2023-53629 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-2023-53629/ (Markdown: https://insights.sbomify.com/CVE-2023-53629/index.md)","id":"CVE-2023-53629","markdown":"https://insights.sbomify.com/CVE-2023-53629/index.md","name":"CVE-2023-53629","record":{"aliases":["AZL-76407","BELL-CVE-2023-53629","DEBIAN-CVE-2023-53629","GHSA-rf27-4m25-62jv","ROOT-OS-UBUNTU-2204-CVE-2023-53629","UBUNTU-CVE-2023-53629"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel DLM","requires_auth":"none","summary":"A use-after-free vulnerability in the Linux kernel's Distributed Lock Manager allows attackers to cause denial of service or potentially execute code.","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\nfs: dlm: fix use after free in midcomms commit\n\nWhile working on processing dlm message in softirq context I experienced\nthe following KASAN use-after-free warning:\n\n[  151.760477] ==================================================================\n[  151.761803] BUG: KASAN: use-after-free in dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[  151.763414] Read of size 4 at addr ffff88811a980c60 by task lock_torture/1347\n\n[  151.765284] CPU: 7 PID: 1347 Comm: lock_torture Not tainted 6.1.0-rc4+ #2828\n[  151.766778] Hardware name: Red Hat KVM/RHEL-AV, BIOS 1.16.0-3.module+el8.7.0+16134+e5908aa2 04/01/2014\n[  151.768726] Call Trace:\n[  151.769277]  \u003cTASK\u003e\n[  151.769748]  dump_stack_lvl+0x5b/0x86\n[  151.770556]  print_report+0x180/0x4c8\n[  151.771378]  ? kasan_complete_mode_report_info+0x7c/0x1e0\n[  151.772241]  ? dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[  151.773069]  kasan_report+0x93/0x1a0\n[  151.773668]  ? dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[  151.774514]  __asan_load4+0x7e/0xa0\n[  151.775089]  dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[  151.775890]  ? create_message.isra.29.constprop.64+0x57/0xc0\n[  151.776770]  send_common+0x19f/0x1b0\n[  151.777342]  ? remove_from_waiters+0x60/0x60\n[  151.778017]  ? lock_downgrade+0x410/0x410\n[  151.778648]  ? __this_cpu_preempt_check+0x13/0x20\n[  151.779421]  ? rcu_lockdep_current_cpu_online+0x88/0xc0\n[  151.780292]  _convert_lock+0x46/0x150\n[  151.780893]  convert_lock+0x7b/0xc0\n[  151.781459]  dlm_lock+0x3ac/0x580\n[  151.781993]  ? 0xffffffffc0540000\n[  151.782522]  ? torture_stop+0x120/0x120 [dlm_locktorture]\n[  151.783379]  ? dlm_scan_rsbs+0xa70/0xa70\n[  151.784003]  ? preempt_count_sub+0xd6/0x130\n[  151.784661]  ? is_module_address+0x47/0x70\n[  151.785309]  ? torture_stop+0x120/0x120 [dlm_locktorture]\n[  151.786166]  ? 0xffffffffc0540000\n[  151.786693]  ? lockdep_init_map_type+0xc3/0x360\n[  151.787414]  ? 0xffffffffc0540000\n[  151.787947]  torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture]\n[  151.789004]  ? torture_stop+0x120/0x120 [dlm_locktorture]\n[  151.789858]  ? 0xffffffffc0540000\n[  151.790392]  ? lock_torture_cleanup+0x20/0x20 [dlm_locktorture]\n[  151.791347]  ? delay_tsc+0x94/0xc0\n[  151.791898]  torture_ex_iter+0xc3/0xea [dlm_locktorture]\n[  151.792735]  ? torture_start+0x30/0x30 [dlm_locktorture]\n[  151.793606]  lock_torture+0x177/0x270 [dlm_locktorture]\n[  151.794448]  ? torture_dlm_lock_sync.isra.3+0x150/0x150 [dlm_locktorture]\n[  151.795539]  ? lock_torture_stats+0x80/0x80 [dlm_locktorture]\n[  151.796476]  ? do_raw_spin_lock+0x11e/0x1e0\n[  151.797152]  ? mark_held_locks+0x34/0xb0\n[  151.797784]  ? _raw_spin_unlock_irqrestore+0x30/0x70\n[  151.798581]  ? __kthread_parkme+0x79/0x110\n[  151.799246]  ? trace_preempt_on+0x2a/0xf0\n[  151.799902]  ? __kthread_parkme+0x79/0x110\n[  151.800579]  ? preempt_count_sub+0xd6/0x130\n[  151.801271]  ? __kasan_check_read+0x11/0x20\n[  151.801963]  ? __kthread_parkme+0xec/0x110\n[  151.802630]  ? lock_torture_stats+0x80/0x80 [dlm_locktorture]\n[  151.803569]  kthread+0x192/0x1d0\n[  151.804104]  ? kthread_complete_and_exit+0x30/0x30\n[  151.804881]  ret_from_fork+0x1f/0x30\n[  151.805480]  \u003c/TASK\u003e\n\n[  151.806111] Allocated by task 1347:\n[  151.806681]  kasan_save_stack+0x26/0x50\n[  151.807308]  kasan_set_track+0x25/0x30\n[  151.807920]  kasan_save_alloc_info+0x1e/0x30\n[  151.808609]  __kasan_slab_alloc+0x63/0x80\n[  151.809263]  kmem_cache_alloc+0x1ad/0x830\n[  151.809916]  dlm_allocate_mhandle+0x17/0x20\n[  151.810590]  dlm_midcomms_get_mhandle+0x96/0x260\n[  151.811344]  _create_message+0x95/0x180\n[  151.811994]  create_message.isra.29.constprop.64+0x57/0xc0\n[  151.812880]  send_common+0x129/0x1b0\n[  151.813467]  _convert_lock+0x46/0x150\n[  151.814074]  convert_lock+0x7b/0xc0\n[  151.814648]  dlm_lock+0x3ac/0x580\n[  151.815199]  torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture]\n[  151.816258]  torture_ex_iter+0xc3/0xea [dlm_locktorture]\n[  151.817129]  lock_t\n---truncated---","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":"fs: dlm: fix use after free in midcomms commit","id":"CVE-2023-53629","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":"iommufd: Fix unpinning of pages when an access is present","id":"CVE-2023-53630"},"packages":[],"prev":{"headline":"drm/amdgpu: drop gfx_v11_0_cp_ecc_error_irq_funcs","id":"CVE-2023-53628"},"products":["Linux"],"published":"2025-10-07","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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-15","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel's Distributed Lock Manager allows attackers to cause denial of service or potentially execute code.","url":"https://insights.sbomify.com/CVE-2023-53629/"}