CVE-2026-31743 (GCVE-0-2026-31743)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:14 – Updated: 2026-08-05 12:24
VLAI
Title
nvmem: zynqmp_nvmem: Fix buffer size in DMA and memcpy
Summary
In the Linux kernel, the following vulnerability has been resolved: nvmem: zynqmp_nvmem: Fix buffer size in DMA and memcpy Buffer size used in dma allocation and memcpy is wrong. It can lead to undersized DMA buffer access and possible memory corruption. use correct buffer size in dma_alloc_coherent and memcpy.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 737c0c8d07b5f671c0a33cec95965fcb2d2ea893 , < 2f6e5b9964d0a63a5ba84fca2642876afb70a662 (git)
Affected: 737c0c8d07b5f671c0a33cec95965fcb2d2ea893 , < 784ed4abded1ca4b525fa4cade8b02f8c5d2a087 (git)
Affected: 737c0c8d07b5f671c0a33cec95965fcb2d2ea893 , < 6c01e7f11f5e5f22285d19510a9643e2506e13c3 (git)
Affected: 737c0c8d07b5f671c0a33cec95965fcb2d2ea893 , < f9b88613ff402aa6fe8fd020573cb95867ae947e (git)
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Linux Linux Affected: 6.9
Unaffected: 0 , < 6.9 (semver)
Unaffected: 6.12.81 , ≤ 6.12.* (semver)
Unaffected: 6.18.22 , ≤ 6.18.* (semver)
Unaffected: 6.19.12 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmem: zynqmp_nvmem: Fix buffer size in DMA and memcpy\n\nBuffer size used in dma allocation and memcpy is wrong.\nIt can lead to undersized DMA buffer access and possible\nmemory corruption. use correct buffer size in dma_alloc_coherent\nand memcpy."
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    "dateReserved": "2026-03-09T15:48:24.138Z",
    "dateUpdated": "2026-08-05T12:24:57.154Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-28T07:27:55+00:00",
      "cve": "CVE-2026-31743",
      "id": "CVE-2026-31743",
      "initial_release_date": "2026-05-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nvmem: zynqmp_nvmem: Fix buffer size in DMA and memcpy",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31743.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-06T01:23:21Z",
      "cve": "CVE-2026-31743",
      "id": "CVE-2026-31743",
      "initial_release_date": "2026-05-06T01:43:13Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "17",
      "product_status:known_not_affected": "278",
      "product_status:recommended": "145",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-31743",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-31743.json",
      "version": "6"
    }
  }
}



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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.