{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2024-53177", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-53177", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-12-27T13:49:21.362Z", "updatedAt": "2026-08-05T11:44:24.120Z", "importedAt": "2026-10-24T01:57:20.494Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "smb: prevent use-after-free due to open_cached_dir error paths", "summary": "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->cfid_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 \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 \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)", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "93877b9afc2994c89362007aac480a7b150f386f", "status": "affected", "versionType": "git", "lessThan": "791f833053578b9fd24252ebb7162a61bc3f805b" }, { "version": "5c86919455c1edec99ebd3338ad213b59271a71b", "status": "affected", "versionType": "git", "lessThan": "97e2afcac0bebfef6a5360f4267ce4c44507b845" }, { "version": "5c86919455c1edec99ebd3338ad213b59271a71b", "status": "affected", "versionType": "git", "lessThan": "47655a12c6b1bca8fa230085eab2e85a076932b7" }, { "version": "5c86919455c1edec99ebd3338ad213b59271a71b", "status": "affected", "versionType": "git", "lessThan": "a9685b409a03b73d2980bbfa53eb47555802d0a9" }, { "version": "6db94d08359c43f2c8fe372811cdee04564a41b9", "status": "affected", "versionType": "git" }, { "version": "6.6.3", "status": "affected", "versionType": "semver", "lessThan": "6.6.64" }, { "version": "6.5.13", "status": "affected", "versionType": "semver", "lessThan": "6.6" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.7", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.7" }, { "version": "6.6.64", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.11.11", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.11.*" }, { "version": "6.12.2", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.13", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }