{ "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-2025-38051", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-38051", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-06-18T09:33:32.805Z", "updatedAt": "2026-08-05T11:59:05.253Z", "importedAt": "2026-10-24T01:57:34.152Z", "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: client: Fix use-after-free in cifs_fill_dirent", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: Fix use-after-free in cifs_fill_dirent\n\nThere is a race condition in the readdir concurrency process, which may\naccess the rsp buffer after it has been released, triggering the\nfollowing KASAN warning.\n\n ==================================================================\n BUG: KASAN: slab-use-after-free in cifs_fill_dirent+0xb03/0xb60 [cifs]\n Read of size 4 at addr ffff8880099b819c by task a.out/342975\n\n CPU: 2 UID: 0 PID: 342975 Comm: a.out Not tainted 6.15.0-rc6+ #240 PREEMPT(full)\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014\n Call Trace:\n \n dump_stack_lvl+0x53/0x70\n print_report+0xce/0x640\n kasan_report+0xb8/0xf0\n cifs_fill_dirent+0xb03/0xb60 [cifs]\n cifs_readdir+0x12cb/0x3190 [cifs]\n iterate_dir+0x1a1/0x520\n __x64_sys_getdents+0x134/0x220\n do_syscall_64+0x4b/0x110\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n RIP: 0033:0x7f996f64b9f9\n Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89\n f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01\n f0 ff ff 0d f7 c3 0c 00 f7 d8 64 89 8\n RSP: 002b:00007f996f53de78 EFLAGS: 00000207 ORIG_RAX: 000000000000004e\n RAX: ffffffffffffffda RBX: 00007f996f53ecdc RCX: 00007f996f64b9f9\n RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003\n RBP: 00007f996f53dea0 R08: 0000000000000000 R09: 0000000000000000\n R10: 0000000000000000 R11: 0000000000000207 R12: ffffffffffffff88\n R13: 0000000000000000 R14: 00007ffc8cd9a500 R15: 00007f996f51e000\n \n\n Allocated by task 408:\n kasan_save_stack+0x20/0x40\n kasan_save_track+0x14/0x30\n __kasan_slab_alloc+0x6e/0x70\n kmem_cache_alloc_noprof+0x117/0x3d0\n mempool_alloc_noprof+0xf2/0x2c0\n cifs_buf_get+0x36/0x80 [cifs]\n allocate_buffers+0x1d2/0x330 [cifs]\n cifs_demultiplex_thread+0x22b/0x2690 [cifs]\n kthread+0x394/0x720\n ret_from_fork+0x34/0x70\n ret_from_fork_asm+0x1a/0x30\n\n Freed by task 342979:\n kasan_save_stack+0x20/0x40\n kasan_save_track+0x14/0x30\n kasan_save_free_info+0x3b/0x60\n __kasan_slab_free+0x37/0x50\n kmem_cache_free+0x2b8/0x500\n cifs_buf_release+0x3c/0x70 [cifs]\n cifs_readdir+0x1c97/0x3190 [cifs]\n iterate_dir+0x1a1/0x520\n __x64_sys_getdents64+0x134/0x220\n do_syscall_64+0x4b/0x110\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\n The buggy address belongs to the object at ffff8880099b8000\n which belongs to the cache cifs_request of size 16588\n The buggy address is located 412 bytes inside of\n freed 16588-byte region [ffff8880099b8000, ffff8880099bc0cc)\n\n The buggy address belongs to the physical page:\n page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x99b8\n head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0\n anon flags: 0x80000000000040(head|node=0|zone=1)\n page_type: f5(slab)\n raw: 0080000000000040 ffff888001e03400 0000000000000000 dead000000000001\n raw: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000\n head: 0080000000000040 ffff888001e03400 0000000000000000 dead000000000001\n head: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000\n head: 0080000000000003 ffffea0000266e01 00000000ffffffff 00000000ffffffff\n head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008\n page dumped because: kasan: bad access detected\n\n Memory state around the buggy address:\n ffff8880099b8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n ffff8880099b8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n >ffff8880099b8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n ^\n ffff8880099b8200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n ffff8880099b8280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n ==================================================================\n\nPOC is available in the link [1].\n\nThe problem triggering process is as follows:\n\nProcess 1 Process 2\n-----------------------------------\n---truncated---", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43", "status": "affected", "versionType": "git", "lessThan": "aee067e88d61eb72e966f094e4749c6b14e7008f" }, { "version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43", "status": "affected", "versionType": "git", "lessThan": "a24c2f05ac3c5b0aaa539d9d913826d2643dfd0e" }, { "version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43", "status": "affected", "versionType": "git", "lessThan": "1b197931fbc821bc7e9e91bf619400db563e3338" }, { "version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43", "status": "affected", "versionType": "git", "lessThan": "c8623231e0edfcccb7cc6add0288fa0f0594282f" }, { "version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43", "status": "affected", "versionType": "git", "lessThan": "73cadde98f67f76c5eba00ac0b72c453383cec8b" }, { "version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43", "status": "affected", "versionType": "git", "lessThan": "9bea368648ac46f8593a780760362e40291d22a9" }, { "version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43", "status": "affected", "versionType": "git", "lessThan": "9c9aafbacc183598f064902365e107b5e856531f" }, { "version": "a364bc0b37f14ffd66c1f982af42990a9d77fa43", "status": "affected", "versionType": "git", "lessThan": "a7a8fe56e932a36f43e031b398aef92341bf5ea0" }, { "version": "0f3da51e7046e2eb28992ba65c22d058f571356c", "status": "affected", "versionType": "git" }, { "version": "2.6.27.4", "status": "affected", "versionType": "semver", "lessThan": "2.6.28" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "2.6.28", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "2.6.28" }, { "version": "5.4.294", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.238", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.185", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.141", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.93", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.31", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.14.9", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.14.*" }, { "version": "6.15", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }