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CVE-2023-52582 (GCVE-0-2023-52582)

Vulnerability from cvelistv5 – Published: 2024-03-02 21:59 – Updated: 2026-05-11 19:29
VLAI
Title
netfs: Only call folio_start_fscache() one time for each folio
Summary
In the Linux kernel, the following vulnerability has been resolved: netfs: Only call folio_start_fscache() one time for each folio If a network filesystem using netfs implements a clamp_length() function, it can set subrequest lengths smaller than a page size. When we loop through the folios in netfs_rreq_unlock_folios() to set any folios to be written back, we need to make sure we only call folio_start_fscache() once for each folio. Otherwise, this simple testcase: mount -o fsc,rsize=1024,wsize=1024 127.0.0.1:/export /mnt/nfs dd if=/dev/zero of=/mnt/nfs/file.bin bs=4096 count=1 1+0 records in 1+0 records out 4096 bytes (4.1 kB, 4.0 KiB) copied, 0.0126359 s, 324 kB/s echo 3 > /proc/sys/vm/drop_caches cat /mnt/nfs/file.bin > /dev/null will trigger an oops similar to the following: page dumped because: VM_BUG_ON_FOLIO(folio_test_private_2(folio)) ------------[ cut here ]------------ kernel BUG at include/linux/netfs.h:44! ... CPU: 5 PID: 134 Comm: kworker/u16:5 Kdump: loaded Not tainted 6.4.0-rc5 ... RIP: 0010:netfs_rreq_unlock_folios+0x68e/0x730 [netfs] ... Call Trace: netfs_rreq_assess+0x497/0x660 [netfs] netfs_subreq_terminated+0x32b/0x610 [netfs] nfs_netfs_read_completion+0x14e/0x1a0 [nfs] nfs_read_completion+0x2f9/0x330 [nfs] rpc_free_task+0x72/0xa0 [sunrpc] rpc_async_release+0x46/0x70 [sunrpc] process_one_work+0x3bd/0x710 worker_thread+0x89/0x610 kthread+0x181/0x1c0 ret_from_fork+0x29/0x50
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-03-04 19:13 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3d3c95046742e4eebaa4b891b0b01cbbed94ebbd , < df9950d37df113db59495fa09d060754366a2b7c (git)
Affected: 3d3c95046742e4eebaa4b891b0b01cbbed94ebbd , < d9f5537479d4ec97ea92ff24e81a517d5772581a (git)
Affected: 3d3c95046742e4eebaa4b891b0b01cbbed94ebbd , < df1c357f25d808e30b216188330e708e09e1a412 (git)
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Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 6.1.56 , ≤ 6.1.* (semver)
Unaffected: 6.5.6 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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Si un sistema de archivos de red que utiliza netfs implementa una funci\u00f3n abrazadera_longitud(), puede establecer longitudes de subsolicitud m\u00e1s peque\u00f1as que el tama\u00f1o de una p\u00e1gina. Cuando recorremos las publicaciones en netfs_rreq_unlock_folios() para configurar las publicaciones que se reescribir\u00e1n, debemos asegurarnos de llamar solo a folio_start_fscache() una vez para cada publicaci\u00f3n. De lo contrario, este caso de prueba simple: mount -o fsc,rsize=1024,wsize=1024 127.0.0.1:/export /mnt/nfs dd if=/dev/zero of=/mnt/nfs/file.bin bs=4096 count= 1 1+0 registros en 1+0 registros en salida 4096 bytes (4,1 kB, 4,0 KiB) copiados, 0,0126359 s, 324 kB/s echo 3 \u0026gt; /proc/sys/vm/drop_caches cat /mnt/nfs/file.bin \u0026gt; /dev/null desencadenar\u00e1 un error similar al siguiente: p\u00e1gina volcada porque: VM_BUG_ON_FOLIO(folio_test_private_2(folio)) ------------[ cortar aqu\u00ed ]---------- -- \u00a1ERROR del kernel en include/linux/netfs.h:44! ... CPU: 5 PID: 134 Comm: kworker/u16:5 Kdump: cargado No contaminado 6.4.0-rc5 ... RIP: 0010:netfs_rreq_unlock_folios+0x68e/0x730 [netfs] ... Seguimiento de llamadas: netfs_rreq_assess+0x497 /0x660 [netfs] netfs_subreq_terminate+0x32b/0x610 [netfs] nfs_netfs_read_completion+0x14e/0x1a0 [nfs] nfs_read_completion+0x2f9/0x330 [nfs] rpc_free_task+0x72/0xa0 [sunrpc] rpc_a sync_release+0x46/0x70 [sunrpc] proceso_one_work+0x3bd/0x710 hilo_trabajador+0x89/0x610 kthread+0x181/0x1c0 ret_from_fork+0x29/0x50\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/netfs/buffered_read.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3d3c95046742e4eebaa4b891b0b01cbbed94ebbd\",\"lessThan\":\"df9950d37df113db59495fa09d060754366a2b7c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3d3c95046742e4eebaa4b891b0b01cbbed94ebbd\",\"lessThan\":\"d9f5537479d4ec97ea92ff24e81a517d5772581a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3d3c95046742e4eebaa4b891b0b01cbbed94ebbd\",\"lessThan\":\"df1c357f25d808e30b216188330e708e09e1a412\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/netfs/buffered_read.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.13\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.13\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.56\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.5.6\",\"lessThanOrEqual\":\"6.5.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"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}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-03-04T19:13:04.085277Z\",\"id\":\"CVE-2023-52582\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"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\":\"5.13\",\"versionEndExcluding\":\"6.1.56\",\"matchCriteriaId\":\"22500F70-0E58-4032-89D2-3152759A8C0A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.5.6\",\"matchCriteriaId\":\"870FC772-173A-4A0F-B1AF-7976AD6057D3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"84267A4F-DBC2-444F-B41D-69E15E1BEC97\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"FB440208-241C-4246-9A83-C1715C0DAA6C\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/d9f5537479d4ec97ea92ff24e81a517d5772581a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/df1c357f25d808e30b216188330e708e09e1a412\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/df9950d37df113db59495fa09d060754366a2b7c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d9f5537479d4ec97ea92ff24e81a517d5772581a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/df1c357f25d808e30b216188330e708e09e1a412\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/df9950d37df113db59495fa09d060754366a2b7c\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T14:01:39+00:00",
      "cve": "CVE-2023-52582",
      "id": "CVE-2023-52582",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_affected": "108",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: netfs: improper loop in netfs_rreq_unlock_folios()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52582.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T01:06:06Z",
      "cve": "CVE-2023-52582",
      "id": "CVE-2023-52582",
      "initial_release_date": "2024-03-05T04:31:30Z",
      "product_status:known_affected": "260",
      "product_status:known_not_affected": "294",
      "product_status:recommended": "673",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-52582",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-52582.json",
      "version": "58"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/df9950d37df113db59495fa09d060754366a2b7c\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/d9f5537479d4ec97ea92ff24e81a517d5772581a\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/df1c357f25d808e30b216188330e708e09e1a412\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T23:03:21.213Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-52582\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-03-04T19:13:04.085277Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:14.749Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"netfs: Only call folio_start_fscache() one time for each folio\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3d3c95046742e4eebaa4b891b0b01cbbed94ebbd\", \"lessThan\": \"df9950d37df113db59495fa09d060754366a2b7c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3d3c95046742e4eebaa4b891b0b01cbbed94ebbd\", \"lessThan\": \"d9f5537479d4ec97ea92ff24e81a517d5772581a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3d3c95046742e4eebaa4b891b0b01cbbed94ebbd\", \"lessThan\": \"df1c357f25d808e30b216188330e708e09e1a412\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/netfs/buffered_read.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": 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trigger an oops similar to the following:\\n\\n  page dumped because: VM_BUG_ON_FOLIO(folio_test_private_2(folio))\\n  ------------[ cut here ]------------\\n  kernel BUG at include/linux/netfs.h:44!\\n  ...\\n  CPU: 5 PID: 134 Comm: kworker/u16:5 Kdump: loaded Not tainted 6.4.0-rc5\\n  ...\\n  RIP: 0010:netfs_rreq_unlock_folios+0x68e/0x730 [netfs]\\n  ...\\n  Call Trace:\\n    netfs_rreq_assess+0x497/0x660 [netfs]\\n    netfs_subreq_terminated+0x32b/0x610 [netfs]\\n    nfs_netfs_read_completion+0x14e/0x1a0 [nfs]\\n    nfs_read_completion+0x2f9/0x330 [nfs]\\n    rpc_free_task+0x72/0xa0 [sunrpc]\\n    rpc_async_release+0x46/0x70 [sunrpc]\\n    process_one_work+0x3bd/0x710\\n    worker_thread+0x89/0x610\\n    kthread+0x181/0x1c0\\n    ret_from_fork+0x29/0x50\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.56\", \"versionStartIncluding\": 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      "cveMetadata": "{\"cveId\": \"CVE-2023-52582\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:39:11.397Z\", \"dateReserved\": \"2024-03-02T21:55:42.569Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-03-02T21:59:48.490Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
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  }
}



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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

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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.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.