CVE-2022-50770 (GCVE-0-2022-50770)
Vulnerability from cvelistv5
Published
2025-12-24 13:05
Modified
2025-12-24 13:05
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix memory leak in ocfs2_mount_volume() There is a memory leak reported by kmemleak: unreferenced object 0xffff88810cc65e60 (size 32): comm "mount.ocfs2", pid 23753, jiffies 4302528942 (age 34735.105s) hex dump (first 32 bytes): 10 00 00 00 00 00 00 00 00 01 01 01 01 01 01 01 ................ 01 01 01 01 01 01 01 01 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff8170f73d>] __kmalloc+0x4d/0x150 [<ffffffffa0ac3f51>] ocfs2_compute_replay_slots+0x121/0x330 [ocfs2] [<ffffffffa0b65165>] ocfs2_check_volume+0x485/0x900 [ocfs2] [<ffffffffa0b68129>] ocfs2_mount_volume.isra.0+0x1e9/0x650 [ocfs2] [<ffffffffa0b7160b>] ocfs2_fill_super+0xe0b/0x1740 [ocfs2] [<ffffffff818e1fe2>] mount_bdev+0x312/0x400 [<ffffffff819a086d>] legacy_get_tree+0xed/0x1d0 [<ffffffff818de82d>] vfs_get_tree+0x7d/0x230 [<ffffffff81957f92>] path_mount+0xd62/0x1760 [<ffffffff81958a5a>] do_mount+0xca/0xe0 [<ffffffff81958d3c>] __x64_sys_mount+0x12c/0x1a0 [<ffffffff82f26f15>] do_syscall_64+0x35/0x80 [<ffffffff8300006a>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 This call stack is related to two problems. Firstly, the ocfs2 super uses "replay_map" to trace online/offline slots, in order to recover offline slots during recovery and mount. But when ocfs2_truncate_log_init() returns an error in ocfs2_mount_volume(), the memory of "replay_map" will not be freed in error handling path. Secondly, the memory of "replay_map" will not be freed if d_make_root() returns an error in ocfs2_fill_super(). But the memory of "replay_map" will be freed normally when completing recovery and mount in ocfs2_complete_mount_recovery(). Fix the first problem by adding error handling path to free "replay_map" when ocfs2_truncate_log_init() fails. And fix the second problem by calling ocfs2_free_replay_slots(osb) in the error handling path "out_dismount". In addition, since ocfs2_free_replay_slots() is static, it is necessary to remove its static attribute and declare it in header file.
References
Impacted products
Vendor Product Version
Linux Linux Version: 9140db04ef185f934acf2b1b15b3dd5e6a6bfc22
Version: 9140db04ef185f934acf2b1b15b3dd5e6a6bfc22
Version: 9140db04ef185f934acf2b1b15b3dd5e6a6bfc22
Version: 9140db04ef185f934acf2b1b15b3dd5e6a6bfc22
Version: 9140db04ef185f934acf2b1b15b3dd5e6a6bfc22
Version: 9140db04ef185f934acf2b1b15b3dd5e6a6bfc22
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ocfs2/journal.c",
            "fs/ocfs2/journal.h",
            "fs/ocfs2/super.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7ef516888c4d30ae41bfcd79e7077d86d92794c5",
              "status": "affected",
              "version": "9140db04ef185f934acf2b1b15b3dd5e6a6bfc22",
              "versionType": "git"
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              "versionType": "git"
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              "status": "affected",
              "version": "9140db04ef185f934acf2b1b15b3dd5e6a6bfc22",
              "versionType": "git"
            },
            {
              "lessThan": "ce2fcf1516d674a174d9b34d1e1024d64de9fba3",
              "status": "affected",
              "version": "9140db04ef185f934acf2b1b15b3dd5e6a6bfc22",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ocfs2/journal.c",
            "fs/ocfs2/journal.h",
            "fs/ocfs2/super.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.30"
            },
            {
              "lessThan": "2.6.30",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.107",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.229",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.163",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.107",
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                  "vulnerable": true
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.16",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.2",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix memory leak in ocfs2_mount_volume()\n\nThere is a memory leak reported by kmemleak:\n\n  unreferenced object 0xffff88810cc65e60 (size 32):\n    comm \"mount.ocfs2\", pid 23753, jiffies 4302528942 (age 34735.105s)\n    hex dump (first 32 bytes):\n      10 00 00 00 00 00 00 00 00 01 01 01 01 01 01 01  ................\n      01 01 01 01 01 01 01 01 00 00 00 00 00 00 00 00  ................\n    backtrace:\n      [\u003cffffffff8170f73d\u003e] __kmalloc+0x4d/0x150\n      [\u003cffffffffa0ac3f51\u003e] ocfs2_compute_replay_slots+0x121/0x330 [ocfs2]\n      [\u003cffffffffa0b65165\u003e] ocfs2_check_volume+0x485/0x900 [ocfs2]\n      [\u003cffffffffa0b68129\u003e] ocfs2_mount_volume.isra.0+0x1e9/0x650 [ocfs2]\n      [\u003cffffffffa0b7160b\u003e] ocfs2_fill_super+0xe0b/0x1740 [ocfs2]\n      [\u003cffffffff818e1fe2\u003e] mount_bdev+0x312/0x400\n      [\u003cffffffff819a086d\u003e] legacy_get_tree+0xed/0x1d0\n      [\u003cffffffff818de82d\u003e] vfs_get_tree+0x7d/0x230\n      [\u003cffffffff81957f92\u003e] path_mount+0xd62/0x1760\n      [\u003cffffffff81958a5a\u003e] do_mount+0xca/0xe0\n      [\u003cffffffff81958d3c\u003e] __x64_sys_mount+0x12c/0x1a0\n      [\u003cffffffff82f26f15\u003e] do_syscall_64+0x35/0x80\n      [\u003cffffffff8300006a\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThis call stack is related to two problems.  Firstly, the ocfs2 super uses\n\"replay_map\" to trace online/offline slots, in order to recover offline\nslots during recovery and mount.  But when ocfs2_truncate_log_init()\nreturns an error in ocfs2_mount_volume(), the memory of \"replay_map\" will\nnot be freed in error handling path.  Secondly, the memory of \"replay_map\"\nwill not be freed if d_make_root() returns an error in ocfs2_fill_super().\nBut the memory of \"replay_map\" will be freed normally when completing\nrecovery and mount in ocfs2_complete_mount_recovery().\n\nFix the first problem by adding error handling path to free \"replay_map\"\nwhen ocfs2_truncate_log_init() fails.  And fix the second problem by\ncalling ocfs2_free_replay_slots(osb) in the error handling path\n\"out_dismount\".  In addition, since ocfs2_free_replay_slots() is static,\nit is necessary to remove its static attribute and declare it in header\nfile."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T13:05:59.700Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7ef516888c4d30ae41bfcd79e7077d86d92794c5"
        },
        {
          "url": "https://git.kernel.org/stable/c/2b7e59ed2e77136e9360274f8f0fc208a003e95c"
        },
        {
          "url": "https://git.kernel.org/stable/c/8059e200259e9c483d715fc2df6340c227c3e196"
        },
        {
          "url": "https://git.kernel.org/stable/c/4efe1d2db731bad19891e2fb9b338724b1f598cc"
        },
        {
          "url": "https://git.kernel.org/stable/c/50ab0ca3aff4da26037113d69f5a756d8c1a92cd"
        },
        {
          "url": "https://git.kernel.org/stable/c/ce2fcf1516d674a174d9b34d1e1024d64de9fba3"
        }
      ],
      "title": "ocfs2: fix memory leak in ocfs2_mount_volume()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50770",
    "datePublished": "2025-12-24T13:05:59.700Z",
    "dateReserved": "2025-12-24T13:02:21.546Z",
    "dateUpdated": "2025-12-24T13:05:59.700Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50770\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-24T13:16:03.813\",\"lastModified\":\"2025-12-24T13:16:03.813\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nocfs2: fix memory leak in ocfs2_mount_volume()\\n\\nThere is a memory leak reported by kmemleak:\\n\\n  unreferenced object 0xffff88810cc65e60 (size 32):\\n    comm \\\"mount.ocfs2\\\", pid 23753, jiffies 4302528942 (age 34735.105s)\\n    hex dump (first 32 bytes):\\n      10 00 00 00 00 00 00 00 00 01 01 01 01 01 01 01  ................\\n      01 01 01 01 01 01 01 01 00 00 00 00 00 00 00 00  ................\\n    backtrace:\\n      [\u003cffffffff8170f73d\u003e] __kmalloc+0x4d/0x150\\n      [\u003cffffffffa0ac3f51\u003e] ocfs2_compute_replay_slots+0x121/0x330 [ocfs2]\\n      [\u003cffffffffa0b65165\u003e] ocfs2_check_volume+0x485/0x900 [ocfs2]\\n      [\u003cffffffffa0b68129\u003e] ocfs2_mount_volume.isra.0+0x1e9/0x650 [ocfs2]\\n      [\u003cffffffffa0b7160b\u003e] ocfs2_fill_super+0xe0b/0x1740 [ocfs2]\\n      [\u003cffffffff818e1fe2\u003e] mount_bdev+0x312/0x400\\n      [\u003cffffffff819a086d\u003e] legacy_get_tree+0xed/0x1d0\\n      [\u003cffffffff818de82d\u003e] vfs_get_tree+0x7d/0x230\\n      [\u003cffffffff81957f92\u003e] path_mount+0xd62/0x1760\\n      [\u003cffffffff81958a5a\u003e] do_mount+0xca/0xe0\\n      [\u003cffffffff81958d3c\u003e] __x64_sys_mount+0x12c/0x1a0\\n      [\u003cffffffff82f26f15\u003e] do_syscall_64+0x35/0x80\\n      [\u003cffffffff8300006a\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\\n\\nThis call stack is related to two problems.  Firstly, the ocfs2 super uses\\n\\\"replay_map\\\" to trace online/offline slots, in order to recover offline\\nslots during recovery and mount.  But when ocfs2_truncate_log_init()\\nreturns an error in ocfs2_mount_volume(), the memory of \\\"replay_map\\\" will\\nnot be freed in error handling path.  Secondly, the memory of \\\"replay_map\\\"\\nwill not be freed if d_make_root() returns an error in ocfs2_fill_super().\\nBut the memory of \\\"replay_map\\\" will be freed normally when completing\\nrecovery and mount in ocfs2_complete_mount_recovery().\\n\\nFix the first problem by adding error handling path to free \\\"replay_map\\\"\\nwhen ocfs2_truncate_log_init() fails.  And fix the second problem by\\ncalling ocfs2_free_replay_slots(osb) in the error handling path\\n\\\"out_dismount\\\".  In addition, since ocfs2_free_replay_slots() is static,\\nit is necessary to remove its static attribute and declare it in header\\nfile.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2b7e59ed2e77136e9360274f8f0fc208a003e95c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4efe1d2db731bad19891e2fb9b338724b1f598cc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/50ab0ca3aff4da26037113d69f5a756d8c1a92cd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7ef516888c4d30ae41bfcd79e7077d86d92794c5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8059e200259e9c483d715fc2df6340c227c3e196\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ce2fcf1516d674a174d9b34d1e1024d64de9fba3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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