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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "92c5b62879073b489793a067dbe8d4f2728cdcad",
              "status": "affected",
              "version": "8f14a476abba13144df5434871a7225fd29af633",
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            {
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            {
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              "status": "affected",
              "version": "538c26d9bf70c90edc460d18c81008a4e555925a",
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            {
              "lessThan": "9b8904b53b5ace0519c74cd89fc3ca763f3856d4",
              "status": "affected",
              "version": "b0abcd65ec545701b8793e12bc27dc98042b151a",
              "versionType": "git"
            },
            {
              "lessThan": "4bdec0d1f658f7c98749bd2c5a486e6cfa8565d2",
              "status": "affected",
              "version": "b0abcd65ec545701b8793e12bc27dc98042b151a",
              "versionType": "git"
            },
            {
              "lessThan": "6.6.64",
              "status": "affected",
              "version": "6.6.57",
              "versionType": "semver"
            },
            {
              "lessThan": "6.11.11",
              "status": "affected",
              "version": "6.11.4",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/smb2pdu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.64",
                  "versionStartIncluding": "6.6.57",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.11",
                  "versionStartIncluding": "6.11.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.2",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix NULL ptr deref in crypto_aead_setkey()\n\nNeither SMB3.0 or SMB3.02 supports encryption negotiate context, so\nwhen SMB2_GLOBAL_CAP_ENCRYPTION flag is set in the negotiate response,\nthe client uses AES-128-CCM as the default cipher.  See MS-SMB2\n3.3.5.4.\n\nCommit b0abcd65ec54 (\"smb: client: fix UAF in async decryption\") added\na @server-\u003ecipher_type check to conditionally call\nsmb3_crypto_aead_allocate(), but that check would always be false as\n@server-\u003ecipher_type is unset for SMB3.02.\n\nFix the following KASAN splat by setting @server-\u003ecipher_type for\nSMB3.02 as well.\n\nmount.cifs //srv/share /mnt -o vers=3.02,seal,...\n\nBUG: KASAN: null-ptr-deref in crypto_aead_setkey+0x2c/0x130\nRead of size 8 at addr 0000000000000020 by task mount.cifs/1095\nCPU: 1 UID: 0 PID: 1095 Comm: mount.cifs Not tainted 6.12.0 #1\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-3.fc41\n04/01/2014\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x5d/0x80\n ? crypto_aead_setkey+0x2c/0x130\n kasan_report+0xda/0x110\n ? crypto_aead_setkey+0x2c/0x130\n crypto_aead_setkey+0x2c/0x130\n crypt_message+0x258/0xec0 [cifs]\n ? __asan_memset+0x23/0x50\n ? __pfx_crypt_message+0x10/0x10 [cifs]\n ? mark_lock+0xb0/0x6a0\n ? hlock_class+0x32/0xb0\n ? mark_lock+0xb0/0x6a0\n smb3_init_transform_rq+0x352/0x3f0 [cifs]\n ? lock_acquire.part.0+0xf4/0x2a0\n smb_send_rqst+0x144/0x230 [cifs]\n ? __pfx_smb_send_rqst+0x10/0x10 [cifs]\n ? hlock_class+0x32/0xb0\n ? smb2_setup_request+0x225/0x3a0 [cifs]\n ? __pfx_cifs_compound_last_callback+0x10/0x10 [cifs]\n compound_send_recv+0x59b/0x1140 [cifs]\n ? __pfx_compound_send_recv+0x10/0x10 [cifs]\n ? __create_object+0x5e/0x90\n ? hlock_class+0x32/0xb0\n ? do_raw_spin_unlock+0x9a/0xf0\n cifs_send_recv+0x23/0x30 [cifs]\n SMB2_tcon+0x3ec/0xb30 [cifs]\n ? __pfx_SMB2_tcon+0x10/0x10 [cifs]\n ? lock_acquire.part.0+0xf4/0x2a0\n ? __pfx_lock_release+0x10/0x10\n ? do_raw_spin_trylock+0xc6/0x120\n ? lock_acquire+0x3f/0x90\n ? _get_xid+0x16/0xd0 [cifs]\n ? __pfx_SMB2_tcon+0x10/0x10 [cifs]\n ? cifs_get_smb_ses+0xcdd/0x10a0 [cifs]\n cifs_get_smb_ses+0xcdd/0x10a0 [cifs]\n ? __pfx_cifs_get_smb_ses+0x10/0x10 [cifs]\n ? cifs_get_tcp_session+0xaa0/0xca0 [cifs]\n cifs_mount_get_session+0x8a/0x210 [cifs]\n dfs_mount_share+0x1b0/0x11d0 [cifs]\n ? __pfx___lock_acquire+0x10/0x10\n ? __pfx_dfs_mount_share+0x10/0x10 [cifs]\n ? lock_acquire.part.0+0xf4/0x2a0\n ? find_held_lock+0x8a/0xa0\n ? hlock_class+0x32/0xb0\n ? lock_release+0x203/0x5d0\n cifs_mount+0xb3/0x3d0 [cifs]\n ? do_raw_spin_trylock+0xc6/0x120\n ? __pfx_cifs_mount+0x10/0x10 [cifs]\n ? lock_acquire+0x3f/0x90\n ? find_nls+0x16/0xa0\n ? smb3_update_mnt_flags+0x372/0x3b0 [cifs]\n cifs_smb3_do_mount+0x1e2/0xc80 [cifs]\n ? __pfx_vfs_parse_fs_string+0x10/0x10\n ? __pfx_cifs_smb3_do_mount+0x10/0x10 [cifs]\n smb3_get_tree+0x1bf/0x330 [cifs]\n vfs_get_tree+0x4a/0x160\n path_mount+0x3c1/0xfb0\n ? kasan_quarantine_put+0xc7/0x1d0\n ? __pfx_path_mount+0x10/0x10\n ? kmem_cache_free+0x118/0x3e0\n ? user_path_at+0x74/0xa0\n __x64_sys_mount+0x1a6/0x1e0\n ? __pfx___x64_sys_mount+0x10/0x10\n ? mark_held_locks+0x1a/0x90\n do_syscall_64+0xbb/0x1d0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The vulnerable state is established entirely from remote SMB server responses over TCP/445 \u2014 the NEGOTIATE response selects dialect SMB3.02 (offered by default) leaving secmech.enc NULL, and the SESSION_SETUP response\u0027s SessionFlags bit forces encryption of the following request. A malicious, compromised, or DFS-referral-redirected SMB server, or an on-path attacker, triggers the oops in the client kernel.\nAC:L - The attacker only has to answer NEGOTIATE with DialectRevision=0x0302 and set SMB2_SESSION_FLAG_ENCRYPT_DATA in the session setup reply; the deref then happens deterministically on the immediately following SMB2_tcon, with no race, timing, or memory-layout dependency.\nPR:N - The malicious server needs no credentials or privileges on the victim client, and the crash occurs while the client is still setting up the connection (tree connect), before any client-side authorization of the server is possible.\nUI:N - An existing CIFS mount renegotiates the dialect and session automatically on reconnect (cifs_reconnect) and follows DFS referrals to attacker-designated servers, so the crash can be induced without any action by the user.\nS:U - The NULL dereference oops occurs in the cifs client within the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:N - This is a NULL pointer dereference reading a fixed offset (0x20) from address zero; no attacker-controlled or sensitive memory is read and no data is disclosed.\nI:N - No memory is written or corrupted \u2014 the request is never encrypted or transmitted, and there is no fallback that would send data in the clear, so no data modification occurs.\nA:H - The dereference produces a kernel oops that kills the mounting task or the cifsd/worker thread mid-operation while holding cifs locks and references, causing hung tasks and an unusable mount, and a full panic on panic_on_oops systems."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:44:28.415Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/92c5b62879073b489793a067dbe8d4f2728cdcad"
        },
        {
          "url": "https://git.kernel.org/stable/c/4a788ebbb10db9da453d52eaf44a41c13dc446df"
        },
        {
          "url": "https://git.kernel.org/stable/c/44c495818d9c4a741ab9e6bc9203ccc9f55f6f40"
        },
        {
          "url": "https://git.kernel.org/stable/c/46f8e25926817272ec8d5bfbd003569bdeb9a8c8"
        },
        {
          "url": "https://git.kernel.org/stable/c/22127c1dc04364cda3da812161e70921e6c3c0af"
        },
        {
          "url": "https://git.kernel.org/stable/c/9b8904b53b5ace0519c74cd89fc3ca763f3856d4"
        },
        {
          "url": "https://git.kernel.org/stable/c/4bdec0d1f658f7c98749bd2c5a486e6cfa8565d2"
        }
      ],
      "title": "smb: client: fix NULL ptr deref in crypto_aead_setkey()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-53185",
    "datePublished": "2024-12-27T13:49:28.304Z",
    "dateReserved": "2024-11-19T17:17:25.012Z",
    "dateUpdated": "2026-08-05T11:44:28.415Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}