CVE-2023-53339 (GCVE-0-2023-53339)

Vulnerability from cvelistv5 – Published: 2025-09-17 14:56 – Updated: 2026-01-05 10:19
VLAI?
Title
btrfs: fix BUG_ON condition in btrfs_cancel_balance
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix BUG_ON condition in btrfs_cancel_balance Pausing and canceling balance can race to interrupt balance lead to BUG_ON panic in btrfs_cancel_balance. The BUG_ON condition in btrfs_cancel_balance does not take this race scenario into account. However, the race condition has no other side effects. We can fix that. Reproducing it with panic trace like this: kernel BUG at fs/btrfs/volumes.c:4618! RIP: 0010:btrfs_cancel_balance+0x5cf/0x6a0 Call Trace: <TASK> ? do_nanosleep+0x60/0x120 ? hrtimer_nanosleep+0xb7/0x1a0 ? sched_core_clone_cookie+0x70/0x70 btrfs_ioctl_balance_ctl+0x55/0x70 btrfs_ioctl+0xa46/0xd20 __x64_sys_ioctl+0x7d/0xa0 do_syscall_64+0x38/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Race scenario as follows: > mutex_unlock(&fs_info->balance_mutex); > -------------------- > .......issue pause and cancel req in another thread > -------------------- > ret = __btrfs_balance(fs_info); > > mutex_lock(&fs_info->balance_mutex); > if (ret == -ECANCELED && atomic_read(&fs_info->balance_pause_req)) { > btrfs_info(fs_info, "balance: paused"); > btrfs_exclop_balance(fs_info, BTRFS_EXCLOP_BALANCE_PAUSED); > }
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ddf7e8984c83aee9122552529f4e77291903f8d9 , < ceb9ba8e30833a4823e2dc73f80ebcdf2498d01a (git)
Affected: 72efe5d44821e38540888a5fe3ff3d0faab6acad , < ae81329f7de3aa6f34ecdfa5412e72161a30e9ce (git)
Affected: b19c98f237cd76981aaded52c258ce93f7daa8cb , < 29eefa6d0d07e185f7bfe9576f91e6dba98189c2 (git)
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    Linux Linux Affected: 6.1.42 , < 6.1.47 (semver)
Affected: 6.4.7 , < 6.4.12 (semver)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/volumes.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
              "version": "ddf7e8984c83aee9122552529f4e77291903f8d9",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            }
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        {
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          "product": "Linux",
          "programFiles": [
            "fs/btrfs/volumes.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6.1.47",
              "status": "affected",
              "version": "6.1.42",
              "versionType": "semver"
            },
            {
              "lessThan": "6.4.12",
              "status": "affected",
              "version": "6.4.7",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.47",
                  "versionStartIncluding": "6.1.42",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.12",
                  "versionStartIncluding": "6.4.7",
                  "vulnerable": true
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              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix BUG_ON condition in btrfs_cancel_balance\n\nPausing and canceling balance can race to interrupt balance lead to BUG_ON\npanic in btrfs_cancel_balance. The BUG_ON condition in btrfs_cancel_balance\ndoes not take this race scenario into account.\n\nHowever, the race condition has no other side effects. We can fix that.\n\nReproducing it with panic trace like this:\n\n  kernel BUG at fs/btrfs/volumes.c:4618!\n  RIP: 0010:btrfs_cancel_balance+0x5cf/0x6a0\n  Call Trace:\n   \u003cTASK\u003e\n   ? do_nanosleep+0x60/0x120\n   ? hrtimer_nanosleep+0xb7/0x1a0\n   ? sched_core_clone_cookie+0x70/0x70\n   btrfs_ioctl_balance_ctl+0x55/0x70\n   btrfs_ioctl+0xa46/0xd20\n   __x64_sys_ioctl+0x7d/0xa0\n   do_syscall_64+0x38/0x80\n   entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\n  Race scenario as follows:\n  \u003e mutex_unlock(\u0026fs_info-\u003ebalance_mutex);\n  \u003e --------------------\n  \u003e .......issue pause and cancel req in another thread\n  \u003e --------------------\n  \u003e ret = __btrfs_balance(fs_info);\n  \u003e\n  \u003e mutex_lock(\u0026fs_info-\u003ebalance_mutex);\n  \u003e if (ret == -ECANCELED \u0026\u0026 atomic_read(\u0026fs_info-\u003ebalance_pause_req)) {\n  \u003e         btrfs_info(fs_info, \"balance: paused\");\n  \u003e         btrfs_exclop_balance(fs_info, BTRFS_EXCLOP_BALANCE_PAUSED);\n  \u003e }"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-05T10:19:30.709Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ceb9ba8e30833a4823e2dc73f80ebcdf2498d01a"
        },
        {
          "url": "https://git.kernel.org/stable/c/ae81329f7de3aa6f34ecdfa5412e72161a30e9ce"
        },
        {
          "url": "https://git.kernel.org/stable/c/29eefa6d0d07e185f7bfe9576f91e6dba98189c2"
        }
      ],
      "title": "btrfs: fix BUG_ON condition in btrfs_cancel_balance",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53339",
    "datePublished": "2025-09-17T14:56:33.114Z",
    "dateReserved": "2025-09-16T16:08:59.565Z",
    "dateUpdated": "2026-01-05T10:19:30.709Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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