CVE-2026-43273 (GCVE-0-2026-43273)
Vulnerability from cvelistv5
Published
2026-05-06 11:28
Modified
2026-05-11 22:21
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ceph: supply snapshot context in ceph_zero_partial_object() The ceph_zero_partial_object function was missing proper snapshot context for its OSD write operations, which could lead to data inconsistencies in snapshots. Reproducer: ../src/vstart.sh --new -x --localhost --bluestore ./bin/ceph auth caps client.fs_a mds 'allow rwps fsname=a' mon 'allow r fsname=a' osd 'allow rw tag cephfs data=a' mount -t ceph fs_a@.a=/ /mnt/mycephfs/ -o conf=./ceph.conf dd if=/dev/urandom of=/mnt/mycephfs/foo bs=64K count=1 mkdir /mnt/mycephfs/.snap/snap1 md5sum /mnt/mycephfs/.snap/snap1/foo fallocate -p -o 0 -l 4096 /mnt/mycephfs/foo echo 3 > /proc/sys/vm/drop/caches md5sum /mnt/mycephfs/.snap/snap1/foo # get different md5sum!!
References
Impacted products
Vendor Product Version
Linux Linux Version: ad7a60de882aca31afb58721db166f7e77afcd92
Version: ad7a60de882aca31afb58721db166f7e77afcd92
Version: ad7a60de882aca31afb58721db166f7e77afcd92
Version: ad7a60de882aca31afb58721db166f7e77afcd92
Version: ad7a60de882aca31afb58721db166f7e77afcd92
Version: ad7a60de882aca31afb58721db166f7e77afcd92
Version: ad7a60de882aca31afb58721db166f7e77afcd92
Version: ad7a60de882aca31afb58721db166f7e77afcd92
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ceph/file.c"
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          "vendor": "Linux",
          "versions": [
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              "status": "unaffected",
              "version": "0",
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            {
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              "status": "unaffected",
              "version": "5.10.252",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.202",
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            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.165",
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            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.128",
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            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
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            },
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              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.16",
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              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.6",
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              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
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      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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              "negate": false,
              "operator": "OR"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nceph: supply snapshot context in ceph_zero_partial_object()\n\nThe ceph_zero_partial_object function was missing proper snapshot\ncontext for its OSD write operations, which could lead to data\ninconsistencies in snapshots.\n\nReproducer:\n../src/vstart.sh --new -x --localhost --bluestore\n./bin/ceph auth caps client.fs_a mds \u0027allow rwps fsname=a\u0027 mon \u0027allow r fsname=a\u0027 osd \u0027allow rw tag cephfs data=a\u0027\nmount -t ceph fs_a@.a=/ /mnt/mycephfs/ -o conf=./ceph.conf\ndd if=/dev/urandom of=/mnt/mycephfs/foo bs=64K count=1\nmkdir /mnt/mycephfs/.snap/snap1\nmd5sum /mnt/mycephfs/.snap/snap1/foo\nfallocate -p -o 0 -l 4096 /mnt/mycephfs/foo\necho 3 \u003e /proc/sys/vm/drop/caches\nmd5sum /mnt/mycephfs/.snap/snap1/foo # get different md5sum!!"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:21:22.184Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/36673344b41c31fb502dd0d0113cec1aa96f581e"
        },
        {
          "url": "https://git.kernel.org/stable/c/5788b742007f53406049bef917833a71ddd43f60"
        },
        {
          "url": "https://git.kernel.org/stable/c/757873abfc8ea38592582180aed0f57f0f0cb07a"
        },
        {
          "url": "https://git.kernel.org/stable/c/9efa154609cdb658f51c7d76b30a09f7e6485250"
        },
        {
          "url": "https://git.kernel.org/stable/c/531a76c5a2e44264cee8a70121e63eb28c1ba728"
        },
        {
          "url": "https://git.kernel.org/stable/c/69e59a87bab0ea31ab2a584fc65e12dafacf8953"
        },
        {
          "url": "https://git.kernel.org/stable/c/4097e70fc543cca72982854108a32f6ae924e727"
        },
        {
          "url": "https://git.kernel.org/stable/c/f16bd3fa74a2084ee7e16a8a2be7e7399b970907"
        }
      ],
      "title": "ceph: supply snapshot context in ceph_zero_partial_object()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43273",
    "datePublished": "2026-05-06T11:28:56.851Z",
    "dateReserved": "2026-05-01T14:12:55.998Z",
    "dateUpdated": "2026-05-11T22:21:22.184Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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