CVE-2026-23038 (GCVE-0-2026-23038)

Vulnerability from cvelistv5 – Published: 2026-01-31 11:42 – Updated: 2026-07-14 12:45
VLAI
Title
pnfs/flexfiles: Fix memory leak in nfs4_ff_alloc_deviceid_node()
Summary
In the Linux kernel, the following vulnerability has been resolved: pnfs/flexfiles: Fix memory leak in nfs4_ff_alloc_deviceid_node() In nfs4_ff_alloc_deviceid_node(), if the allocation for ds_versions fails, the function jumps to the out_scratch label without freeing the already allocated dsaddrs list, leading to a memory leak. Fix this by jumping to the out_err_drain_dsaddrs label, which properly frees the dsaddrs list before cleaning up other resources.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-16 20:32 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d67ae825a59d639e4d8b82413af84d854617a87e , < e2dde5dafb80f1af4028ed10ad255f42af71c784 (git)
Affected: d67ae825a59d639e4d8b82413af84d854617a87e , < 27c90d8ed81e7a289c9fe41b5e31d8bb609a3385 (git)
Affected: d67ae825a59d639e4d8b82413af84d854617a87e , < 34b9dd179818ff7af2b36410985fd8166573c62d (git)
Affected: d67ae825a59d639e4d8b82413af84d854617a87e , < 869862056e100973e76ce9f5f1b01837771b7722 (git)
Affected: d67ae825a59d639e4d8b82413af84d854617a87e , < 86da7efd12295a7e2b4abde5e5984c821edd938f (git)
Affected: d67ae825a59d639e4d8b82413af84d854617a87e , < ed5d3f2f6885eb99f729e6ffd946e3aa058bd3eb (git)
Affected: d67ae825a59d639e4d8b82413af84d854617a87e , < 0c728083654f0066f5e10a1d2b0bd0907af19a58 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.0
Unaffected: 0 , < 4.0 (semver)
Unaffected: 5.10.249 , ≤ 5.10.* (semver)
Unaffected: 5.15.199 , ≤ 5.15.* (semver)
Unaffected: 6.1.162 , ≤ 6.1.* (semver)
Unaffected: 6.6.122 , ≤ 6.6.* (semver)
Unaffected: 6.12.67 , ≤ 6.12.* (semver)
Unaffected: 6.18.7 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens RUGGEDCOM RST2428P Affected: 0 , < V4.0 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
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      "cve": "CVE-2026-23038",
      "id": "CVE-2026-23038",
      "initial_release_date": "2026-01-31T00:00:00+00:00",
      "product_status:known_affected": "260",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: Memory leak in pnfs/flexfiles can lead to denial of service",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23038.json",
      "version": "3"
    },
    "vulnrichment": {
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{\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-16T20:32:12.394629Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-16T20:32:16.971Z\"}}], \"cna\": {\"title\": \"pnfs/flexfiles: Fix memory leak in nfs4_ff_alloc_deviceid_node()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"d67ae825a59d639e4d8b82413af84d854617a87e\", \"lessThan\": \"e2dde5dafb80f1af4028ed10ad255f42af71c784\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d67ae825a59d639e4d8b82413af84d854617a87e\", \"lessThan\": \"27c90d8ed81e7a289c9fe41b5e31d8bb609a3385\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d67ae825a59d639e4d8b82413af84d854617a87e\", \"lessThan\": 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\"versions\": [{\"status\": \"affected\", \"version\": \"4.0\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.249\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.199\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.162\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.122\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.67\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.18.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.18.*\"}, {\"status\": \"unaffected\", \"version\": \"6.19\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/nfs/flexfilelayout/flexfilelayoutdev.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/e2dde5dafb80f1af4028ed10ad255f42af71c784\"}, {\"url\": \"https://git.kernel.org/stable/c/27c90d8ed81e7a289c9fe41b5e31d8bb609a3385\"}, {\"url\": \"https://git.kernel.org/stable/c/34b9dd179818ff7af2b36410985fd8166573c62d\"}, {\"url\": \"https://git.kernel.org/stable/c/869862056e100973e76ce9f5f1b01837771b7722\"}, {\"url\": \"https://git.kernel.org/stable/c/86da7efd12295a7e2b4abde5e5984c821edd938f\"}, {\"url\": \"https://git.kernel.org/stable/c/ed5d3f2f6885eb99f729e6ffd946e3aa058bd3eb\"}, {\"url\": \"https://git.kernel.org/stable/c/0c728083654f0066f5e10a1d2b0bd0907af19a58\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\npnfs/flexfiles: Fix memory leak in nfs4_ff_alloc_deviceid_node()\\n\\nIn nfs4_ff_alloc_deviceid_node(), if the allocation for ds_versions fails,\\nthe function jumps to the out_scratch label without freeing the already\\nallocated dsaddrs list, leading to a memory leak.\\n\\nFix this by jumping to the out_err_drain_dsaddrs label, which properly\\nfrees the dsaddrs list before cleaning up other resources.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.249\", \"versionStartIncluding\": \"4.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.199\", \"versionStartIncluding\": \"4.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.162\", \"versionStartIncluding\": \"4.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.122\", \"versionStartIncluding\": \"4.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.67\", \"versionStartIncluding\": \"4.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18.7\", \"versionStartIncluding\": \"4.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.19\", \"versionStartIncluding\": \"4.0\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T21:58:48.041Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-23038\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-14T12:45:51.178Z\", \"dateReserved\": \"2026-01-13T15:37:45.943Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-01-31T11:42:32.599Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.