CVE-2024-56565 (GCVE-0-2024-56565)
Vulnerability from cvelistv5
Published
2024-12-27 14:23
Modified
2025-05-04 09:58
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to drop all discards after creating snapshot on lvm device Piergiorgio reported a bug in bugzilla as below: ------------[ cut here ]------------ WARNING: CPU: 2 PID: 969 at fs/f2fs/segment.c:1330 RIP: 0010:__submit_discard_cmd+0x27d/0x400 [f2fs] Call Trace: __issue_discard_cmd+0x1ca/0x350 [f2fs] issue_discard_thread+0x191/0x480 [f2fs] kthread+0xcf/0x100 ret_from_fork+0x31/0x50 ret_from_fork_asm+0x1a/0x30 w/ below testcase, it can reproduce this bug quickly: - pvcreate /dev/vdb - vgcreate myvg1 /dev/vdb - lvcreate -L 1024m -n mylv1 myvg1 - mount /dev/myvg1/mylv1 /mnt/f2fs - dd if=/dev/zero of=/mnt/f2fs/file bs=1M count=20 - sync - rm /mnt/f2fs/file - sync - lvcreate -L 1024m -s -n mylv1-snapshot /dev/myvg1/mylv1 - umount /mnt/f2fs The root cause is: it will update discard_max_bytes of mounted lvm device to zero after creating snapshot on this lvm device, then, __submit_discard_cmd() will pass parameter @nr_sects w/ zero value to __blkdev_issue_discard(), it returns a NULL bio pointer, result in panic. This patch changes as below for fixing: 1. Let's drop all remained discards in f2fs_unfreeze() if snapshot of lvm device is created. 2. Checking discard_max_bytes before submitting discard during __submit_discard_cmd().
References
Impacted products
Vendor Product Version
Linux Linux Version: 35ec7d5748849762008e8ae9f8ad2766229d5794
Version: 35ec7d5748849762008e8ae9f8ad2766229d5794
Version: 35ec7d5748849762008e8ae9f8ad2766229d5794
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/f2fs/segment.c",
            "fs/f2fs/super.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ed24ab98242f8d22b66fbe0452c97751b5ea4e22",
              "status": "affected",
              "version": "35ec7d5748849762008e8ae9f8ad2766229d5794",
              "versionType": "git"
            },
            {
              "lessThan": "15136c3861a3341db261ebdbb6ae4ae1765635e2",
              "status": "affected",
              "version": "35ec7d5748849762008e8ae9f8ad2766229d5794",
              "versionType": "git"
            },
            {
              "lessThan": "bc8aeb04fd80cb8cfae3058445c84410fd0beb5e",
              "status": "affected",
              "version": "35ec7d5748849762008e8ae9f8ad2766229d5794",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/f2fs/segment.c",
            "fs/f2fs/super.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.19"
            },
            {
              "lessThan": "4.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.66",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.66",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.4",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to drop all discards after creating snapshot on lvm device\n\nPiergiorgio reported a bug in bugzilla as below:\n\n------------[ cut here ]------------\nWARNING: CPU: 2 PID: 969 at fs/f2fs/segment.c:1330\nRIP: 0010:__submit_discard_cmd+0x27d/0x400 [f2fs]\nCall Trace:\n __issue_discard_cmd+0x1ca/0x350 [f2fs]\n issue_discard_thread+0x191/0x480 [f2fs]\n kthread+0xcf/0x100\n ret_from_fork+0x31/0x50\n ret_from_fork_asm+0x1a/0x30\n\nw/ below testcase, it can reproduce this bug quickly:\n- pvcreate /dev/vdb\n- vgcreate myvg1 /dev/vdb\n- lvcreate -L 1024m -n mylv1 myvg1\n- mount /dev/myvg1/mylv1 /mnt/f2fs\n- dd if=/dev/zero of=/mnt/f2fs/file bs=1M count=20\n- sync\n- rm /mnt/f2fs/file\n- sync\n- lvcreate -L 1024m -s -n mylv1-snapshot /dev/myvg1/mylv1\n- umount /mnt/f2fs\n\nThe root cause is: it will update discard_max_bytes of mounted lvm\ndevice to zero after creating snapshot on this lvm device, then,\n__submit_discard_cmd() will pass parameter @nr_sects w/ zero value\nto __blkdev_issue_discard(), it returns a NULL bio pointer, result\nin panic.\n\nThis patch changes as below for fixing:\n1. Let\u0027s drop all remained discards in f2fs_unfreeze() if snapshot\nof lvm device is created.\n2. Checking discard_max_bytes before submitting discard during\n__submit_discard_cmd()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T09:58:29.400Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ed24ab98242f8d22b66fbe0452c97751b5ea4e22"
        },
        {
          "url": "https://git.kernel.org/stable/c/15136c3861a3341db261ebdbb6ae4ae1765635e2"
        },
        {
          "url": "https://git.kernel.org/stable/c/bc8aeb04fd80cb8cfae3058445c84410fd0beb5e"
        }
      ],
      "title": "f2fs: fix to drop all discards after creating snapshot on lvm device",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56565",
    "datePublished": "2024-12-27T14:23:09.350Z",
    "dateReserved": "2024-12-27T14:03:05.995Z",
    "dateUpdated": "2025-05-04T09:58:29.400Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-56565\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-27T15:15:15.400\",\"lastModified\":\"2025-10-07T18:34:52.570\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nf2fs: fix to drop all discards after creating snapshot on lvm device\\n\\nPiergiorgio reported a bug in bugzilla as below:\\n\\n------------[ cut here ]------------\\nWARNING: CPU: 2 PID: 969 at fs/f2fs/segment.c:1330\\nRIP: 0010:__submit_discard_cmd+0x27d/0x400 [f2fs]\\nCall Trace:\\n __issue_discard_cmd+0x1ca/0x350 [f2fs]\\n issue_discard_thread+0x191/0x480 [f2fs]\\n kthread+0xcf/0x100\\n ret_from_fork+0x31/0x50\\n ret_from_fork_asm+0x1a/0x30\\n\\nw/ below testcase, it can reproduce this bug quickly:\\n- pvcreate /dev/vdb\\n- vgcreate myvg1 /dev/vdb\\n- lvcreate -L 1024m -n mylv1 myvg1\\n- mount /dev/myvg1/mylv1 /mnt/f2fs\\n- dd if=/dev/zero of=/mnt/f2fs/file bs=1M count=20\\n- sync\\n- rm /mnt/f2fs/file\\n- sync\\n- lvcreate -L 1024m -s -n mylv1-snapshot /dev/myvg1/mylv1\\n- umount /mnt/f2fs\\n\\nThe root cause is: it will update discard_max_bytes of mounted lvm\\ndevice to zero after creating snapshot on this lvm device, then,\\n__submit_discard_cmd() will pass parameter @nr_sects w/ zero value\\nto __blkdev_issue_discard(), it returns a NULL bio pointer, result\\nin panic.\\n\\nThis patch changes as below for fixing:\\n1. Let\u0027s drop all remained discards in f2fs_unfreeze() if snapshot\\nof lvm device is created.\\n2. Checking discard_max_bytes before submitting discard during\\n__submit_discard_cmd().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: correcci\u00f3n para descartar todos los descartes despu\u00e9s de crear una instant\u00e1nea en el dispositivo lvm Piergiorgio inform\u00f3 un error en bugzilla como se muestra a continuaci\u00f3n: ------------[ cortar aqu\u00ed ]------------ ADVERTENCIA: CPU: 2 PID: 969 en fs/f2fs/segment.c:1330 RIP: 0010:__submit_discard_cmd+0x27d/0x400 [f2fs] Seguimiento de llamadas: __issue_discard_cmd+0x1ca/0x350 [f2fs] issue_discard_thread+0x191/0x480 [f2fs] kthread+0xcf/0x100 ret_from_fork+0x31/0x50 ret_from_fork_asm+0x1a/0x30 con el siguiente caso de prueba, puede reproducir este error r\u00e1pidamente: - pvcreate /dev/vdb - vgcreate myvg1 /dev/vdb - lvcreate -L 1024m -n mylv1 myvg1 - mount /dev/myvg1/mylv1 /mnt/f2fs - dd if=/dev/zero of=/mnt/f2fs/file bs=1M count=20 - sync - rm /mnt/f2fs/file - sync - lvcreate -L 1024m -s -n mylv1-snapshot /dev/myvg1/mylv1 - umount /mnt/f2fs La causa ra\u00edz es: actualizar\u00e1 discard_max_bytes del dispositivo lvm montado a cero despu\u00e9s de crear una instant\u00e1nea en este dispositivo lvm, luego, __submit_discard_cmd() pasar\u00e1 el par\u00e1metro @nr_sects con valor cero a __blkdev_issue_discard(), devuelve un puntero bio NULL, resultado En p\u00e1nico. Este parche cambia lo siguiente para solucionar: 1. Descartamos todos los descartes restantes en f2fs_unfreeze() si se crea una instant\u00e1nea del dispositivo lvm. 2. Comprobamos discard_max_bytes antes de enviar el descarte durante __submit_discard_cmd().\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.19\",\"versionEndExcluding\":\"6.6.66\",\"matchCriteriaId\":\"11F0A5BB-68E6-4E86-921A-80BA2447967F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.4\",\"matchCriteriaId\":\"04756810-D093-4B43-B1D9-CF5035968061\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/15136c3861a3341db261ebdbb6ae4ae1765635e2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/bc8aeb04fd80cb8cfae3058445c84410fd0beb5e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ed24ab98242f8d22b66fbe0452c97751b5ea4e22\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.