CVE-2025-40196 (GCVE-0-2025-40196)

Vulnerability from cvelistv5 – Published: 2025-11-12 21:56 – Updated: 2026-05-23 16:01
VLAI
Title
fs: quota: create dedicated workqueue for quota_release_work
Summary
In the Linux kernel, the following vulnerability has been resolved: fs: quota: create dedicated workqueue for quota_release_work There is a kernel panic due to WARN_ONCE when panic_on_warn is set. This issue occurs when writeback is triggered due to sync call for an opened file(ie, writeback reason is WB_REASON_SYNC). When f2fs balance is needed at sync path, flush for quota_release_work is triggered. By default quota_release_work is queued to "events_unbound" queue which does not have WQ_MEM_RECLAIM flag. During f2fs balance "writeback" workqueue tries to flush quota_release_work causing kernel panic due to MEM_RECLAIM flag mismatch errors. This patch creates dedicated workqueue with WQ_MEM_RECLAIM flag for work quota_release_work. ------------[ cut here ]------------ WARNING: CPU: 4 PID: 14867 at kernel/workqueue.c:3721 check_flush_dependency+0x13c/0x148 Call trace: check_flush_dependency+0x13c/0x148 __flush_work+0xd0/0x398 flush_delayed_work+0x44/0x5c dquot_writeback_dquots+0x54/0x318 f2fs_do_quota_sync+0xb8/0x1a8 f2fs_write_checkpoint+0x3cc/0x99c f2fs_gc+0x190/0x750 f2fs_balance_fs+0x110/0x168 f2fs_write_single_data_page+0x474/0x7dc f2fs_write_data_pages+0x7d0/0xd0c do_writepages+0xe0/0x2f4 __writeback_single_inode+0x44/0x4ac writeback_sb_inodes+0x30c/0x538 wb_writeback+0xf4/0x440 wb_workfn+0x128/0x5d4 process_scheduled_works+0x1c4/0x45c worker_thread+0x32c/0x3e8 kthread+0x11c/0x1b0 ret_from_fork+0x10/0x20 Kernel panic - not syncing: kernel: panic_on_warn set ...
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: bcacb52a985f1b6d280f698a470b873dfe52728a , < f846eacde280ecc3daedfe001580e3033565179e (git)
Affected: 8ea87e34792258825d290f4dc5216276e91cb224 , < f12039df1515d5daf7d92e586ece5cefeb39561b (git)
Affected: ac6f420291b3fee1113f21d612fa88b628afab5b , < 8a09a62f0c8c6123c2f1864ed6d5f9eb144afaf0 (git)
Affected: ac6f420291b3fee1113f21d612fa88b628afab5b , < 72b7ceca857f38a8ca7c5629feffc63769638974 (git)
Affected: a5abba5e0e586e258ded3e798fe5f69c66fec198 (git)
Affected: 6f3821acd7c3143145999248087de5fb4b48cf26 (git)
Affected: ab6cfcf8ed2c7496f55d020b65b1d8cd55d9a2cb (git)
Affected: 3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cb (git)
Affected: 6.6.64 , < 6.6.114 (semver)
Affected: 6.12.4 , < 6.12.54 (semver)
Affected: 5.4.287 , < 5.5 (semver)
Affected: 5.10.231 , < 5.11 (semver)
Affected: 5.15.174 , < 5.16 (semver)
Affected: 6.1.120 , < 6.2 (semver)
Create a notification for this product.
Linux Linux Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.6.114 , ≤ 6.6.* (semver)
Unaffected: 6.12.54 , ≤ 6.12.* (semver)
Unaffected: 6.17.4 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/quota/dquot.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f846eacde280ecc3daedfe001580e3033565179e",
              "status": "affected",
              "version": "bcacb52a985f1b6d280f698a470b873dfe52728a",
              "versionType": "git"
            },
            {
              "lessThan": "f12039df1515d5daf7d92e586ece5cefeb39561b",
              "status": "affected",
              "version": "8ea87e34792258825d290f4dc5216276e91cb224",
              "versionType": "git"
            },
            {
              "lessThan": "8a09a62f0c8c6123c2f1864ed6d5f9eb144afaf0",
              "status": "affected",
              "version": "ac6f420291b3fee1113f21d612fa88b628afab5b",
              "versionType": "git"
            },
            {
              "lessThan": "72b7ceca857f38a8ca7c5629feffc63769638974",
              "status": "affected",
              "version": "ac6f420291b3fee1113f21d612fa88b628afab5b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a5abba5e0e586e258ded3e798fe5f69c66fec198",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6f3821acd7c3143145999248087de5fb4b48cf26",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ab6cfcf8ed2c7496f55d020b65b1d8cd55d9a2cb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cb",
              "versionType": "git"
            },
            {
              "lessThan": "6.6.114",
              "status": "affected",
              "version": "6.6.64",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.54",
              "status": "affected",
              "version": "6.12.4",
              "versionType": "semver"
            },
            {
              "lessThan": "5.5",
              "status": "affected",
              "version": "5.4.287",
              "versionType": "semver"
            },
            {
              "lessThan": "5.11",
              "status": "affected",
              "version": "5.10.231",
              "versionType": "semver"
            },
            {
              "lessThan": "5.16",
              "status": "affected",
              "version": "5.15.174",
              "versionType": "semver"
            },
            {
              "lessThan": "6.2",
              "status": "affected",
              "version": "6.1.120",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/quota/dquot.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.114",
                  "versionStartIncluding": "6.6.64",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.54",
                  "versionStartIncluding": "6.12.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.4",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.4.287",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.10.231",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.15.174",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.1.120",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs: quota: create dedicated workqueue for quota_release_work\n\nThere is a kernel panic due to WARN_ONCE when panic_on_warn is set.\n\nThis issue occurs when writeback is triggered due to sync call for an\nopened file(ie, writeback reason is WB_REASON_SYNC). When f2fs balance\nis needed at sync path, flush for quota_release_work is triggered.\nBy default quota_release_work is queued to \"events_unbound\" queue which\ndoes not have WQ_MEM_RECLAIM flag. During f2fs balance \"writeback\"\nworkqueue tries to flush quota_release_work causing kernel panic due to\nMEM_RECLAIM flag mismatch errors.\n\nThis patch creates dedicated workqueue with WQ_MEM_RECLAIM flag\nfor work quota_release_work.\n\n------------[ cut here ]------------\nWARNING: CPU: 4 PID: 14867 at kernel/workqueue.c:3721 check_flush_dependency+0x13c/0x148\nCall trace:\n check_flush_dependency+0x13c/0x148\n __flush_work+0xd0/0x398\n flush_delayed_work+0x44/0x5c\n dquot_writeback_dquots+0x54/0x318\n f2fs_do_quota_sync+0xb8/0x1a8\n f2fs_write_checkpoint+0x3cc/0x99c\n f2fs_gc+0x190/0x750\n f2fs_balance_fs+0x110/0x168\n f2fs_write_single_data_page+0x474/0x7dc\n f2fs_write_data_pages+0x7d0/0xd0c\n do_writepages+0xe0/0x2f4\n __writeback_single_inode+0x44/0x4ac\n writeback_sb_inodes+0x30c/0x538\n wb_writeback+0xf4/0x440\n wb_workfn+0x128/0x5d4\n process_scheduled_works+0x1c4/0x45c\n worker_thread+0x32c/0x3e8\n kthread+0x11c/0x1b0\n ret_from_fork+0x10/0x20\nKernel panic - not syncing: kernel: panic_on_warn set ..."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T16:01:37.343Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f846eacde280ecc3daedfe001580e3033565179e"
        },
        {
          "url": "https://git.kernel.org/stable/c/f12039df1515d5daf7d92e586ece5cefeb39561b"
        },
        {
          "url": "https://git.kernel.org/stable/c/8a09a62f0c8c6123c2f1864ed6d5f9eb144afaf0"
        },
        {
          "url": "https://git.kernel.org/stable/c/72b7ceca857f38a8ca7c5629feffc63769638974"
        }
      ],
      "title": "fs: quota: create dedicated workqueue for quota_release_work",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40196",
    "datePublished": "2025-11-12T21:56:32.578Z",
    "dateReserved": "2025-04-16T07:20:57.178Z",
    "dateUpdated": "2026-05-23T16:01:37.343Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-40196",
      "date": "2026-06-12",
      "epss": "0.00032",
      "percentile": "0.09769"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-40196\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-11-12T22:15:46.673\",\"lastModified\":\"2025-11-14T16:42:30.503\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfs: quota: create dedicated workqueue for quota_release_work\\n\\nThere is a kernel panic due to WARN_ONCE when panic_on_warn is set.\\n\\nThis issue occurs when writeback is triggered due to sync call for an\\nopened file(ie, writeback reason is WB_REASON_SYNC). When f2fs balance\\nis needed at sync path, flush for quota_release_work is triggered.\\nBy default quota_release_work is queued to \\\"events_unbound\\\" queue which\\ndoes not have WQ_MEM_RECLAIM flag. During f2fs balance \\\"writeback\\\"\\nworkqueue tries to flush quota_release_work causing kernel panic due to\\nMEM_RECLAIM flag mismatch errors.\\n\\nThis patch creates dedicated workqueue with WQ_MEM_RECLAIM flag\\nfor work quota_release_work.\\n\\n------------[ cut here ]------------\\nWARNING: CPU: 4 PID: 14867 at kernel/workqueue.c:3721 check_flush_dependency+0x13c/0x148\\nCall trace:\\n check_flush_dependency+0x13c/0x148\\n __flush_work+0xd0/0x398\\n flush_delayed_work+0x44/0x5c\\n dquot_writeback_dquots+0x54/0x318\\n f2fs_do_quota_sync+0xb8/0x1a8\\n f2fs_write_checkpoint+0x3cc/0x99c\\n f2fs_gc+0x190/0x750\\n f2fs_balance_fs+0x110/0x168\\n f2fs_write_single_data_page+0x474/0x7dc\\n f2fs_write_data_pages+0x7d0/0xd0c\\n do_writepages+0xe0/0x2f4\\n __writeback_single_inode+0x44/0x4ac\\n writeback_sb_inodes+0x30c/0x538\\n wb_writeback+0xf4/0x440\\n wb_workfn+0x128/0x5d4\\n process_scheduled_works+0x1c4/0x45c\\n worker_thread+0x32c/0x3e8\\n kthread+0x11c/0x1b0\\n ret_from_fork+0x10/0x20\\nKernel panic - not syncing: kernel: panic_on_warn set ...\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/72b7ceca857f38a8ca7c5629feffc63769638974\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8a09a62f0c8c6123c2f1864ed6d5f9eb144afaf0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f12039df1515d5daf7d92e586ece5cefeb39561b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f846eacde280ecc3daedfe001580e3033565179e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.

Sightings

Author Source Type Date Other

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.