smb: client: fix double put of @cfile in smb2_set_path_size()

{
  "id": "bc7a8e2d00531485ad57bff741f453bff54862e53b58644ae6f764d836a258ff",
  "url": "https://osv.dev/vulnerability/CVE-2024-46796",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "smb: client: fix double put of @cfile in smb2_set_path_size()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double put of @cfile in smb2_set_path_size() If smb2_compound_op() is called with a valid @cfile and returned -EINVAL, we need to call cifs_get_writable_path() before retrying it as the reference of @cfile was already dropped by previous call. This fixes the following KASAN splat when running fstests generic/013 against Windows Server 2022: CIFS: Attempting to mount //w22-fs0/scratch run fstests generic/013 at 2024-09-02 19:48:59 ================================================================== BUG: KASAN: slab-use-after-free in detach_if_pending+0xab/0x200 Write of size 8 at addr ffff88811f1a3730 by task kworker/3:2/176 CPU: 3 UID: 0 PID: 176 Comm: kworker/3:2 Not tainted 6.11.0-rc6 #2 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-2.fc40 04/01/2014 Workqueue: cifsoplockd cifs_oplock_break [cifs] Call Trace: dump_stack_lvl+0x5d/0x80 ? detach_if_pending+0xab/0x200 print_report+0x156/0x4d9 ? detach_if_pending+0xab/0x200 ? __virt_addr_valid+0x145/0x300 ? __phys_addr+0x46/0x90 ? detach_if_pending+0xab/0x200 kasan_report+0xda/0x110 ? detach_if_pending+0xab/0x200 detach_if_pending+0xab/0x200 timer_delete+0x96/0xe0 ? __pfx_timer_delete+0x10/0x10 ? rcu_is_watching+0x20/0x50 try_to_grab_pending+0x46/0x3b0 __cancel_work+0x89/0x1b0 ? __pfx___cancel_work+0x10/0x10 ? kasan_save_track+0x14/0x30 cifs_close_deferred_file+0x110/0x2c0 [cifs] ? __pfx_cifs_close_deferred_file+0x10/0x10 [cifs] ",
    "evidence": "osv:CVE-2024-46796",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.51",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.10.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2024-46796",
      "aliases": [
        "CVE-2024-46796"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "1e60bc0e954389af82f1d9a85f13a63f6572350f"
                },
                {
                  "fixed": "5a72d1edb0843e4c927a4096f81e631031c25c28"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "71f15c90e785d1de4bcd65a279e7256684c25c0d"
                },
                {
                  "fixed": "762099898309218b4a7954f3d49e985dc4dfd638"
                },
                {
                  "fixed": "f9c169b51b6ce20394594ef674d6b10efba31220"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "6.6.32"
                },
                {
                  "fixed": "6.6.51"
                }
              ]
            }
          ],
          "versions": [
            "v6.6.50",
            "v6.6.49",
            "v6.6.48",
            "v6.6.47",
            "v6.6.46",
            "v6.6.45",
            "v6.6.44",
            "v6.6.43",
            "v6.6.42",
            "v6.6.41",
            "v6.6.40",
            "v6.6.39",
            "v6.6.38",
            "v6.6.37",
            "v6.6.36",
            "v6.6.35",
            "v6.6.34",
            "v6.6.33",
            "v6.6.32"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-46796.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6.6.51"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.10.10"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-46796.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.948129479Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/5a72d1edb0843e4c927a4096f81e631031c25c28",
        "https://git.kernel.org/stable/c/762099898309218b4a7954f3d49e985dc4dfd638",
        "https://git.kernel.org/stable/c/f9c169b51b6ce20394594ef674d6b10efba31220",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/46xxx/CVE-2024-46796.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-46796",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/46xxx/CVE-2024-46796.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-46796",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 490354,
  "published_at": "2024-09-18T07:12:51.038+00:00"
}