{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-53177 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-53177 is a critical use after free vulnerability in Linux kernel, published on 27 Dec 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-2024-53177 and fix it if it is affected.\n\nWhat it is: CVE-2024-53177 is a critical use after free vulnerability in Linux kernel, published on 27 Dec 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-2024-53177 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-2024-53177/ (Markdown: https://insights.sbomify.com/CVE-2024-53177/index.md)","id":"CVE-2024-53177","markdown":"https://insights.sbomify.com/CVE-2024-53177/index.md","name":"CVE-2024-53177","record":{"aliases":["BELL-CVE-2024-53177","DEBIAN-CVE-2024-53177","GHSA-5hh7-6vv2-v2hg","ROOT-OS-DEBIAN-11-CVE-2024-53177","ROOT-OS-DEBIAN-12-CVE-2024-53177","ROOT-OS-UBUNTU-2204-CVE-2024-53177","UBUNTU-CVE-2024-53177"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel SMB client","requires_auth":"none","summary":"A use-after-free vulnerability in the Linux kernel SMB client allows attackers to cause denial of service or potentially execute code via race conditions during lease handling.","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\nsmb: prevent use-after-free due to open_cached_dir error paths\n\nIf open_cached_dir() encounters an error parsing the lease from the\nserver, the error handling may race with receiving a lease break,\nresulting in open_cached_dir() freeing the cfid while the queued work is\npending.\n\nUpdate open_cached_dir() to drop refs rather than directly freeing the\ncfid.\n\nHave cached_dir_lease_break(), cfids_laundromat_worker(), and\ninvalidate_all_cached_dirs() clear has_lease immediately while still\nholding cfids-\u003ecfid_list_lock, and then use this to also simplify the\nreference counting in cfids_laundromat_worker() and\ninvalidate_all_cached_dirs().\n\nFixes this KASAN splat (which manually injects an error and lease break\nin open_cached_dir()):\n\n==================================================================\nBUG: KASAN: slab-use-after-free in smb2_cached_lease_break+0x27/0xb0\nRead of size 8 at addr ffff88811cc24c10 by task kworker/3:1/65\n\nCPU: 3 UID: 0 PID: 65 Comm: kworker/3:1 Not tainted 6.12.0-rc6-g255cf264e6e5-dirty #87\nHardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 11/12/2020\nWorkqueue: cifsiod smb2_cached_lease_break\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x77/0xb0\n print_report+0xce/0x660\n kasan_report+0xd3/0x110\n smb2_cached_lease_break+0x27/0xb0\n process_one_work+0x50a/0xc50\n worker_thread+0x2ba/0x530\n kthread+0x17c/0x1c0\n ret_from_fork+0x34/0x60\n ret_from_fork_asm+0x1a/0x30\n \u003c/TASK\u003e\n\nAllocated by task 2464:\n kasan_save_stack+0x33/0x60\n kasan_save_track+0x14/0x30\n __kasan_kmalloc+0xaa/0xb0\n open_cached_dir+0xa7d/0x1fb0\n smb2_query_path_info+0x43c/0x6e0\n cifs_get_fattr+0x346/0xf10\n cifs_get_inode_info+0x157/0x210\n cifs_revalidate_dentry_attr+0x2d1/0x460\n cifs_getattr+0x173/0x470\n vfs_statx_path+0x10f/0x160\n vfs_statx+0xe9/0x150\n vfs_fstatat+0x5e/0xc0\n __do_sys_newfstatat+0x91/0xf0\n do_syscall_64+0x95/0x1a0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFreed by task 2464:\n kasan_save_stack+0x33/0x60\n kasan_save_track+0x14/0x30\n kasan_save_free_info+0x3b/0x60\n __kasan_slab_free+0x51/0x70\n kfree+0x174/0x520\n open_cached_dir+0x97f/0x1fb0\n smb2_query_path_info+0x43c/0x6e0\n cifs_get_fattr+0x346/0xf10\n cifs_get_inode_info+0x157/0x210\n cifs_revalidate_dentry_attr+0x2d1/0x460\n cifs_getattr+0x173/0x470\n vfs_statx_path+0x10f/0x160\n vfs_statx+0xe9/0x150\n vfs_fstatat+0x5e/0xc0\n __do_sys_newfstatat+0x91/0xf0\n do_syscall_64+0x95/0x1a0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nLast potentially related work creation:\n kasan_save_stack+0x33/0x60\n __kasan_record_aux_stack+0xad/0xc0\n insert_work+0x32/0x100\n __queue_work+0x5c9/0x870\n queue_work_on+0x82/0x90\n open_cached_dir+0x1369/0x1fb0\n smb2_query_path_info+0x43c/0x6e0\n cifs_get_fattr+0x346/0xf10\n cifs_get_inode_info+0x157/0x210\n cifs_revalidate_dentry_attr+0x2d1/0x460\n cifs_getattr+0x173/0x470\n vfs_statx_path+0x10f/0x160\n vfs_statx+0xe9/0x150\n vfs_fstatat+0x5e/0xc0\n __do_sys_newfstatat+0x91/0xf0\n do_syscall_64+0x95/0x1a0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nThe buggy address belongs to the object at ffff88811cc24c00\n which belongs to the cache kmalloc-1k of size 1024\nThe buggy address is located 16 bytes inside of\n freed 1024-byte region [ffff88811cc24c00, ffff88811cc25000)","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":"smb: prevent use-after-free due to open_cached_dir error paths","id":"CVE-2024-53177","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"use_after_free","year":"2024"},"n_packages":0,"n_references":4,"next":{"headline":"smb: Don't leak cfid when reconnect races with open_cached_dir","id":"CVE-2024-53178"},"packages":[],"prev":{"headline":"smb: During unmount, ensure all cached dir instances drop their dentry","id":"CVE-2024-53176"},"products":["Linux"],"published":"2024-12-27","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":"total"},"state":"PUBLISHED","updated":"2026-08-05","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel SMB client allows attackers to cause denial of service or potentially execute code via race conditions during lease handling.","url":"https://insights.sbomify.com/CVE-2024-53177/"}