CVE-2022-49927 (GCVE-0-2022-49927)
Vulnerability from cvelistv5
Published
2025-05-01 14:11
Modified
2026-05-11 19:09
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: nfs4: Fix kmemleak when allocate slot failed If one of the slot allocate failed, should cleanup all the other allocated slots, otherwise, the allocated slots will leak: unreferenced object 0xffff8881115aa100 (size 64): comm ""mount.nfs"", pid 679, jiffies 4294744957 (age 115.037s) hex dump (first 32 bytes): 00 cc 19 73 81 88 ff ff 00 a0 5a 11 81 88 ff ff ...s......Z..... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000007a4c434a>] nfs4_find_or_create_slot+0x8e/0x130 [<000000005472a39c>] nfs4_realloc_slot_table+0x23f/0x270 [<00000000cd8ca0eb>] nfs40_init_client+0x4a/0x90 [<00000000128486db>] nfs4_init_client+0xce/0x270 [<000000008d2cacad>] nfs4_set_client+0x1a2/0x2b0 [<000000000e593b52>] nfs4_create_server+0x300/0x5f0 [<00000000e4425dd2>] nfs4_try_get_tree+0x65/0x110 [<00000000d3a6176f>] vfs_get_tree+0x41/0xf0 [<0000000016b5ad4c>] path_mount+0x9b3/0xdd0 [<00000000494cae71>] __x64_sys_mount+0x190/0x1d0 [<000000005d56bdec>] do_syscall_64+0x35/0x80 [<00000000687c9ae4>] entry_SYSCALL_64_after_hwframe+0x46/0xb0
References
Impacted products
Vendor Product Version
Linux Linux Version: abf79bb341bf52f75f295b850abdf5f78f584311
Version: abf79bb341bf52f75f295b850abdf5f78f584311
Version: abf79bb341bf52f75f295b850abdf5f78f584311
Version: abf79bb341bf52f75f295b850abdf5f78f584311
Version: abf79bb341bf52f75f295b850abdf5f78f584311
Version: abf79bb341bf52f75f295b850abdf5f78f584311
Version: abf79bb341bf52f75f295b850abdf5f78f584311
Version: abf79bb341bf52f75f295b850abdf5f78f584311
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{
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            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
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              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfs4: Fix kmemleak when allocate slot failed\n\nIf one of the slot allocate failed, should cleanup all the other\nallocated slots, otherwise, the allocated slots will leak:\n\n  unreferenced object 0xffff8881115aa100 (size 64):\n    comm \"\"mount.nfs\"\", pid 679, jiffies 4294744957 (age 115.037s)\n    hex dump (first 32 bytes):\n      00 cc 19 73 81 88 ff ff 00 a0 5a 11 81 88 ff ff  ...s......Z.....\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    backtrace:\n      [\u003c000000007a4c434a\u003e] nfs4_find_or_create_slot+0x8e/0x130\n      [\u003c000000005472a39c\u003e] nfs4_realloc_slot_table+0x23f/0x270\n      [\u003c00000000cd8ca0eb\u003e] nfs40_init_client+0x4a/0x90\n      [\u003c00000000128486db\u003e] nfs4_init_client+0xce/0x270\n      [\u003c000000008d2cacad\u003e] nfs4_set_client+0x1a2/0x2b0\n      [\u003c000000000e593b52\u003e] nfs4_create_server+0x300/0x5f0\n      [\u003c00000000e4425dd2\u003e] nfs4_try_get_tree+0x65/0x110\n      [\u003c00000000d3a6176f\u003e] vfs_get_tree+0x41/0xf0\n      [\u003c0000000016b5ad4c\u003e] path_mount+0x9b3/0xdd0\n      [\u003c00000000494cae71\u003e] __x64_sys_mount+0x190/0x1d0\n      [\u003c000000005d56bdec\u003e] do_syscall_64+0x35/0x80\n      [\u003c00000000687c9ae4\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0"
        }
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:09:24.289Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/84b5cb476903003ae9ca88f32b57ff0eaefa6d4c"
        },
        {
          "url": "https://git.kernel.org/stable/c/aae35a0c8a775fa4afa6a4e7dab3f936f1f89bbb"
        },
        {
          "url": "https://git.kernel.org/stable/c/86ce0e93cf6fb4d0c447323ac66577c642628b9d"
        },
        {
          "url": "https://git.kernel.org/stable/c/925cb538bd5851154602818dc80bf4b4d924c127"
        },
        {
          "url": "https://git.kernel.org/stable/c/45aea4fbf61e205649c29200726b9f45c1718a67"
        },
        {
          "url": "https://git.kernel.org/stable/c/24641993a7dce6b1628645f4e1d97ca06c9f765d"
        },
        {
          "url": "https://git.kernel.org/stable/c/db333ae981fb8843c383aa7dbf62cc682597d401"
        },
        {
          "url": "https://git.kernel.org/stable/c/7e8436728e22181c3f12a5dbabd35ed3a8b8c593"
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      ],
      "title": "nfs4: Fix kmemleak when allocate slot failed",
      "x_generator": {
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49927",
    "datePublished": "2025-05-01T14:11:05.404Z",
    "dateReserved": "2025-05-01T14:05:17.253Z",
    "dateUpdated": "2026-05-11T19:09:24.289Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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