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CVE-2022-50770 (GCVE-0-2022-50770)

Vulnerability from cvelistv5 – Published: 2025-12-24 13:05 – Updated: 2026-05-11 19:25
VLAI
Title
ocfs2: fix memory leak in ocfs2_mount_volume()
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 , < 7ef516888c4d30ae41bfcd79e7077d86d92794c5 (git)
Affected: 9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 , < 2b7e59ed2e77136e9360274f8f0fc208a003e95c (git)
Affected: 9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 , < 8059e200259e9c483d715fc2df6340c227c3e196 (git)
Affected: 9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 , < 4efe1d2db731bad19891e2fb9b338724b1f598cc (git)
Affected: 9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 , < 50ab0ca3aff4da26037113d69f5a756d8c1a92cd (git)
Affected: 9140db04ef185f934acf2b1b15b3dd5e6a6bfc22 , < ce2fcf1516d674a174d9b34d1e1024d64de9fba3 (git)
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Linux Linux Affected: 2.6.30
Unaffected: 0 , < 2.6.30 (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.107 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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{
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      "descriptions": [
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          "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."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:25:12.344Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/2b7e59ed2e77136e9360274f8f0fc208a003e95c"
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          "url": "https://git.kernel.org/stable/c/ce2fcf1516d674a174d9b34d1e1024d64de9fba3"
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      "title": "ocfs2: fix memory leak in ocfs2_mount_volume()",
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    "cveId": "CVE-2022-50770",
    "datePublished": "2025-12-24T13:05:59.700Z",
    "dateReserved": "2025-12-24T13:02:21.546Z",
    "dateUpdated": "2026-05-11T19:25:12.344Z",
    "state": "PUBLISHED"
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      "date": "2026-09-19",
      "epss": "0.00251",
      "percentile": "0.1685"
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    "nvd": {
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        "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."
          }
        ],
        "id": "CVE-2022-50770",
        "lastModified": "2026-06-17T05:24:08.890",
        "metrics": {},
        "published": "2025-12-24T13:16:03.813",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/2b7e59ed2e77136e9360274f8f0fc208a003e95c"
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            "url": "https://git.kernel.org/stable/c/4efe1d2db731bad19891e2fb9b338724b1f598cc"
          },
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            "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"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:20:53+00:00",
      "cve": "CVE-2022-50770",
      "id": "CVE-2022-50770",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ocfs2: fix memory leak in ocfs2_mount_volume()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50770.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.