CVE-2026-53060 (GCVE-0-2026-53060)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:30 – Updated: 2026-06-24 16:30
VLAI
Title
dm cache metadata: fix memory leak on metadata abort retry
Summary
In the Linux kernel, the following vulnerability has been resolved: dm cache metadata: fix memory leak on metadata abort retry When failing to acquire the root_lock in dm_cache_metadata_abort because the block_manager is read-only, the temporary block_manager created outside the root_lock is not properly released, causing a memory leak. Reproduce steps: This can be reproduced by reloading a new table while the metadata is read-only. While the second call to dm_cache_metadata_abort is caused by lack of support for table preload in dm-cache, mentioned in commit 9b1cc9f251af ("dm cache: share cache-metadata object across inactive and active DM tables"), it exposes the memory leak in dm_cache_metadata_abort when the function is called multiple times. Specifically, dm-cache fails to sync the new cache object's mode during preresume, creating the reproducer condition. This issue could also occur through concurrent metadata_operation_failed calls due to races in cache mode updates, but the table preload scenario below provides a reliable reproducer. 1. Create a cache device with some faulty trailing metadata blocks dmsetup create cmeta <<EOF 0 200 linear /dev/sdc 0 200 7992 error EOF dmsetup create cdata --table "0 131072 linear /dev/sdc 8192" dmsetup create corig --table "0 262144 linear /dev/sdc 262144" dd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table "0 131072 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 1 writethrough smq 0" 2. Suspend and resume the cache to start a new metadata transaction and trigger metadata io errors on the next metadata commit. dmsetup suspend cache dmsetup resume cache 3. Write to the cache device to update metadata fio --filename=/dev/mapper/cache --name test --rw=randwrite --bs=4k \ --randrepeat=0 --direct=1 --size 64k 4. Preload the same table dmsetup reload cache --table "$(dmsetup table cache)" 5. Resume the new table. This triggers the memory leak. dmsetup suspend cache dmsetup resume cache kmemleak logs: <snip> unreferenced object 0xffff8880080c2010 (size 16): comm "dmsetup", pid 132, jiffies 4294982580 hex dump (first 16 bytes): 00 38 b9 07 80 88 ff ff 6a 6b 6b 6b 6b 6b 6b a5 ... backtrace (crc 3118f31c): kmemleak_alloc+0x28/0x40 __kmalloc_cache_noprof+0x3d9/0x510 dm_block_manager_create+0x51/0x140 dm_cache_metadata_abort+0x85/0x320 metadata_operation_failed+0x103/0x1e0 cache_preresume+0xacd/0xe70 dm_table_resume_targets+0xd3/0x320 __dm_resume+0x1b/0xf0 dm_resume+0x127/0x170 <snip>
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b45e77b79215405bd039a690f5b06cc03e8ed27d , < 14f60e957f34f95a626caec76a8fae88cf4c397f (git)
Affected: 28d307f380df88a598bc0186d527462902d9bda1 , < 6b97cc7a42905755c56bbddc33aa8b792205caee (git)
Affected: f74b7c5a85e22cd9091845e0d62a1dd89d0f855f , < d1a79620c419a0af1911f99c873014b30740e303 (git)
Affected: 352b837a5541690d4f843819028cf2b8be83d424 , < 15c30997dca681f90dbf2d45ee629c1828bf0c0d (git)
Affected: 352b837a5541690d4f843819028cf2b8be83d424 , < b0bd35535bdb6f58505f3a30ee5793986943997a (git)
Affected: 352b837a5541690d4f843819028cf2b8be83d424 , < 322a3b70368d49e39591fe9fc6c07d262128b05f (git)
Affected: 352b837a5541690d4f843819028cf2b8be83d424 , < 4311ca59a1891d33c4c8b7946f98c34f167fe833 (git)
Affected: 352b837a5541690d4f843819028cf2b8be83d424 , < 044ca491d4086dc5bf233e9fcb71db52df32f633 (git)
Affected: 6e237cacda8b4e976849e7bff9fe7dff0e968586 (git)
Affected: 3972ae47d0ee9b5b434af5d0cca6cdfd1e239d4f (git)
Affected: 9958f5ffc44530b650fb4cc9038a4d167fa4f5c1 (git)
Affected: f472bfc95d9c9653172dbdad39219b32fabf9b92 (git)
Affected: bdd4e106929ac943f3226d8f03754b480701e97b (git)
Affected: 5.10.163 , < 5.10.258 (semver)
Affected: 5.15.87 , < 5.15.209 (semver)
Affected: 6.1.4 , < 6.1.175 (semver)
Affected: 4.9.337 , < 4.10 (semver)
Affected: 4.14.303 , < 4.15 (semver)
Affected: 4.19.270 , < 4.20 (semver)
Affected: 5.4.229 , < 5.5 (semver)
Affected: 6.0.18 , < 6.1 (semver)
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Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 5.10.258 , ≤ 5.10.* (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.141 , ≤ 6.6.* (semver)
Unaffected: 6.12.91 , ≤ 6.12.* (semver)
Unaffected: 6.18.33 , ≤ 6.18.* (semver)
Unaffected: 7.0.10 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm cache metadata: fix memory leak on metadata abort retry\n\nWhen failing to acquire the root_lock in dm_cache_metadata_abort because\nthe block_manager is read-only, the temporary block_manager created\noutside the root_lock is not properly released, causing a memory leak.\n\nReproduce steps:\n\nThis can be reproduced by reloading a new table while the metadata\nis read-only. While the second call to dm_cache_metadata_abort is\ncaused by lack of support for table preload in dm-cache, mentioned\nin commit 9b1cc9f251af (\"dm cache: share cache-metadata object across\ninactive and active DM tables\"), it exposes the memory leak in\ndm_cache_metadata_abort when the function is called multiple times.\nSpecifically, dm-cache fails to sync the new cache object\u0027s mode during\npreresume, creating the reproducer condition.\n\nThis issue could also occur through concurrent metadata_operation_failed\ncalls due to races in cache mode updates, but the table preload scenario\nbelow provides a reliable reproducer.\n\n1. Create a cache device with some faulty trailing metadata blocks\n\ndmsetup create cmeta \u003c\u003cEOF\n0 200 linear /dev/sdc 0\n200 7992 error\nEOF\ndmsetup create cdata --table \"0 131072 linear /dev/sdc 8192\"\ndmsetup create corig --table \"0 262144 linear /dev/sdc 262144\"\ndd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1 oflag=direct\ndmsetup create cache --table \"0 131072 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 1 writethrough smq 0\"\n\n2. Suspend and resume the cache to start a new metadata transaction and\n   trigger metadata io errors on the next metadata commit.\n\ndmsetup suspend cache\ndmsetup resume cache\n\n3. Write to the cache device to update metadata\n\nfio --filename=/dev/mapper/cache --name test --rw=randwrite --bs=4k \\\n--randrepeat=0 --direct=1 --size 64k\n\n4. Preload the same table\n\ndmsetup reload cache --table \"$(dmsetup table cache)\"\n\n5. Resume the new table. This triggers the memory leak.\n\ndmsetup suspend cache\ndmsetup resume cache\n\nkmemleak logs:\n\n\u003csnip\u003e\nunreferenced object 0xffff8880080c2010 (size 16):\n  comm \"dmsetup\", pid 132, jiffies 4294982580\n  hex dump (first 16 bytes):\n    00 38 b9 07 80 88 ff ff 6a 6b 6b 6b 6b 6b 6b a5 ...\n  backtrace (crc 3118f31c):\n    kmemleak_alloc+0x28/0x40\n    __kmalloc_cache_noprof+0x3d9/0x510\n    dm_block_manager_create+0x51/0x140\n    dm_cache_metadata_abort+0x85/0x320\n    metadata_operation_failed+0x103/0x1e0\n    cache_preresume+0xacd/0xe70\n    dm_table_resume_targets+0xd3/0x320\n    __dm_resume+0x1b/0xf0\n    dm_resume+0x127/0x170\n\u003csnip\u003e"
        }
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      "providerMetadata": {
        "dateUpdated": "2026-06-24T16:30:04.872Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
        {
          "url": "https://git.kernel.org/stable/c/14f60e957f34f95a626caec76a8fae88cf4c397f"
        },
        {
          "url": "https://git.kernel.org/stable/c/6b97cc7a42905755c56bbddc33aa8b792205caee"
        },
        {
          "url": "https://git.kernel.org/stable/c/d1a79620c419a0af1911f99c873014b30740e303"
        },
        {
          "url": "https://git.kernel.org/stable/c/15c30997dca681f90dbf2d45ee629c1828bf0c0d"
        },
        {
          "url": "https://git.kernel.org/stable/c/b0bd35535bdb6f58505f3a30ee5793986943997a"
        },
        {
          "url": "https://git.kernel.org/stable/c/322a3b70368d49e39591fe9fc6c07d262128b05f"
        },
        {
          "url": "https://git.kernel.org/stable/c/4311ca59a1891d33c4c8b7946f98c34f167fe833"
        },
        {
          "url": "https://git.kernel.org/stable/c/044ca491d4086dc5bf233e9fcb71db52df32f633"
        }
      ],
      "title": "dm cache metadata: fix memory leak on metadata abort retry",
      "x_generator": {
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    }
  },
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    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53060",
    "datePublished": "2026-06-24T16:30:04.872Z",
    "dateReserved": "2026-06-09T07:44:35.382Z",
    "dateUpdated": "2026-06-24T16:30:04.872Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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    "epss": {
      "cve": "CVE-2026-53060",
      "date": "2026-07-02",
      "epss": "0.00184",
      "percentile": "0.08199"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-53060\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-06-24T17:17:18.717\",\"lastModified\":\"2026-06-24T17:17:18.717\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndm cache metadata: fix memory leak on metadata abort retry\\n\\nWhen failing to acquire the root_lock in dm_cache_metadata_abort because\\nthe block_manager is read-only, the temporary block_manager created\\noutside the root_lock is not properly released, causing a memory leak.\\n\\nReproduce steps:\\n\\nThis can be reproduced by reloading a new table while the metadata\\nis read-only. While the second call to dm_cache_metadata_abort is\\ncaused by lack of support for table preload in dm-cache, mentioned\\nin commit 9b1cc9f251af (\\\"dm cache: share cache-metadata object across\\ninactive and active DM tables\\\"), it exposes the memory leak in\\ndm_cache_metadata_abort when the function is called multiple times.\\nSpecifically, dm-cache fails to sync the new cache object\u0027s mode during\\npreresume, creating the reproducer condition.\\n\\nThis issue could also occur through concurrent metadata_operation_failed\\ncalls due to races in cache mode updates, but the table preload scenario\\nbelow provides a reliable reproducer.\\n\\n1. Create a cache device with some faulty trailing metadata blocks\\n\\ndmsetup create cmeta \u003c\u003cEOF\\n0 200 linear /dev/sdc 0\\n200 7992 error\\nEOF\\ndmsetup create cdata --table \\\"0 131072 linear /dev/sdc 8192\\\"\\ndmsetup create corig --table \\\"0 262144 linear /dev/sdc 262144\\\"\\ndd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1 oflag=direct\\ndmsetup create cache --table \\\"0 131072 cache /dev/mapper/cmeta \\\\\\n/dev/mapper/cdata /dev/mapper/corig 128 1 writethrough smq 0\\\"\\n\\n2. Suspend and resume the cache to start a new metadata transaction and\\n   trigger metadata io errors on the next metadata commit.\\n\\ndmsetup suspend cache\\ndmsetup resume cache\\n\\n3. Write to the cache device to update metadata\\n\\nfio --filename=/dev/mapper/cache --name test --rw=randwrite --bs=4k \\\\\\n--randrepeat=0 --direct=1 --size 64k\\n\\n4. Preload the same table\\n\\ndmsetup reload cache --table \\\"$(dmsetup table cache)\\\"\\n\\n5. Resume the new table. This triggers the memory leak.\\n\\ndmsetup suspend cache\\ndmsetup resume cache\\n\\nkmemleak logs:\\n\\n\u003csnip\u003e\\nunreferenced object 0xffff8880080c2010 (size 16):\\n  comm \\\"dmsetup\\\", pid 132, jiffies 4294982580\\n  hex dump (first 16 bytes):\\n    00 38 b9 07 80 88 ff ff 6a 6b 6b 6b 6b 6b 6b a5 ...\\n  backtrace (crc 3118f31c):\\n    kmemleak_alloc+0x28/0x40\\n    __kmalloc_cache_noprof+0x3d9/0x510\\n    dm_block_manager_create+0x51/0x140\\n    dm_cache_metadata_abort+0x85/0x320\\n    metadata_operation_failed+0x103/0x1e0\\n    cache_preresume+0xacd/0xe70\\n    dm_table_resume_targets+0xd3/0x320\\n    __dm_resume+0x1b/0xf0\\n    dm_resume+0x127/0x170\\n\u003csnip\u003e\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/md/dm-cache-metadata.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"b45e77b79215405bd039a690f5b06cc03e8ed27d\",\"lessThan\":\"14f60e957f34f95a626caec76a8fae88cf4c397f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"28d307f380df88a598bc0186d527462902d9bda1\",\"lessThan\":\"6b97cc7a42905755c56bbddc33aa8b792205caee\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f74b7c5a85e22cd9091845e0d62a1dd89d0f855f\",\"lessThan\":\"d1a79620c419a0af1911f99c873014b30740e303\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"352b837a5541690d4f843819028cf2b8be83d424\",\"lessThan\":\"15c30997dca681f90dbf2d45ee629c1828bf0c0d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"352b837a5541690d4f843819028cf2b8be83d424\",\"lessThan\":\"b0bd35535bdb6f58505f3a30ee5793986943997a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"352b837a5541690d4f843819028cf2b8be83d424\",\"lessThan\":\"322a3b70368d49e39591fe9fc6c07d262128b05f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"352b837a5541690d4f843819028cf2b8be83d424\",\"lessThan\":\"4311ca59a1891d33c4c8b7946f98c34f167fe833\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"352b837a5541690d4f843819028cf2b8be83d424\",\"lessThan\":\"044ca491d4086dc5bf233e9fcb71db52df32f633\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6e237cacda8b4e976849e7bff9fe7dff0e968586\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3972ae47d0ee9b5b434af5d0cca6cdfd1e239d4f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9958f5ffc44530b650fb4cc9038a4d167fa4f5c1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f472bfc95d9c9653172dbdad39219b32fabf9b92\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bdd4e106929ac943f3226d8f03754b480701e97b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.10.163\",\"lessThan\":\"5.10.258\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.15.87\",\"lessThan\":\"5.15.209\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.1.4\",\"lessThan\":\"6.1.175\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.9.337\",\"lessThan\":\"4.10\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.14.303\",\"lessThan\":\"4.15\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.19.270\",\"lessThan\":\"4.20\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.4.229\",\"lessThan\":\"5.5\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.0.18\",\"lessThan\":\"6.1\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/md/dm-cache-metadata.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.2\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.2\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.258\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.209\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.175\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.141\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.91\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.33\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.10\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/044ca491d4086dc5bf233e9fcb71db52df32f633\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/14f60e957f34f95a626caec76a8fae88cf4c397f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/15c30997dca681f90dbf2d45ee629c1828bf0c0d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/322a3b70368d49e39591fe9fc6c07d262128b05f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4311ca59a1891d33c4c8b7946f98c34f167fe833\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6b97cc7a42905755c56bbddc33aa8b792205caee\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b0bd35535bdb6f58505f3a30ee5793986943997a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d1a79620c419a0af1911f99c873014b30740e303\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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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.

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.