Vulnerability-Lookup

FKIE_CVE-2026-31491

Vulnerability from fkie_nvd - Published: 2026-04-22 14:16 - Updated: 2026-04-23 16:17

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Harden depth calculation functions An issue was exposed where OS can pass in U32_MAX for SQ/RQ/SRQ size. This can cause integer overflow and truncation of SQ/RQ/SRQ depth returning a success when it should have failed. Harden the functions to do all depth calculations and boundary checking in u64 sizes.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3f08351de5ca4f2f724b86ad252fbc21289467e1
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/cbd852f5700eb3f64392452faf693ac45cae8281
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e37afcb56ae070477741fe2d6e61fc0c542cce2d

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Harden depth calculation functions\n\nAn issue was exposed where OS can pass in U32_MAX for SQ/RQ/SRQ size.\nThis can cause integer overflow and truncation of SQ/RQ/SRQ depth\nreturning a success when it should have failed.\n\nHarden the functions to do all depth calculations and boundary\nchecking in u64 sizes."
    }
  ],
  "id": "CVE-2026-31491",
  "lastModified": "2026-04-23T16:17:41.280",
  "metrics": {},
  "published": "2026-04-22T14:16:46.880",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3f08351de5ca4f2f724b86ad252fbc21289467e1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cbd852f5700eb3f64392452faf693ac45cae8281"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e37afcb56ae070477741fe2d6e61fc0c542cce2d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

CVE-2026-31491 (GCVE-0-2026-31491)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:54 – Updated: 2026-04-22 13:54

Title

RDMA/irdma: Harden depth calculation functions

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/3f08351de5ca4f2f7…
	https://git.kernel.org/stable/c/cbd852f5700eb3f64…
	https://git.kernel.org/stable/c/e37afcb56ae070477…

Impacted products

Vendor

Product

Version

Linux

Affected: 563e1feb5f6ed579acb55850f1bbb831aecf645a , < 3f08351de5ca4f2f724b86ad252fbc21289467e1 (git)
Affected: 563e1feb5f6ed579acb55850f1bbb831aecf645a , < cbd852f5700eb3f64392452faf693ac45cae8281 (git)
Affected: 563e1feb5f6ed579acb55850f1bbb831aecf645a , < e37afcb56ae070477741fe2d6e61fc0c542cce2d (git)

Linux

Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/irdma/uk.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3f08351de5ca4f2f724b86ad252fbc21289467e1",
              "status": "affected",
              "version": "563e1feb5f6ed579acb55850f1bbb831aecf645a",
              "versionType": "git"
            },
            {
              "lessThan": "cbd852f5700eb3f64392452faf693ac45cae8281",
              "status": "affected",
              "version": "563e1feb5f6ed579acb55850f1bbb831aecf645a",
              "versionType": "git"
            },
            {
              "lessThan": "e37afcb56ae070477741fe2d6e61fc0c542cce2d",
              "status": "affected",
              "version": "563e1feb5f6ed579acb55850f1bbb831aecf645a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/irdma/uk.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.21",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.21",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.11",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Harden depth calculation functions\n\nAn issue was exposed where OS can pass in U32_MAX for SQ/RQ/SRQ size.\nThis can cause integer overflow and truncation of SQ/RQ/SRQ depth\nreturning a success when it should have failed.\n\nHarden the functions to do all depth calculations and boundary\nchecking in u64 sizes."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-22T13:54:14.905Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3f08351de5ca4f2f724b86ad252fbc21289467e1"
        },
        {
          "url": "https://git.kernel.org/stable/c/cbd852f5700eb3f64392452faf693ac45cae8281"
        },
        {
          "url": "https://git.kernel.org/stable/c/e37afcb56ae070477741fe2d6e61fc0c542cce2d"
        }
      ],
      "title": "RDMA/irdma: Harden depth calculation functions",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31491",
    "datePublished": "2026-04-22T13:54:14.905Z",
    "dateReserved": "2026-03-09T15:48:24.102Z",
    "dateUpdated": "2026-04-22T13:54:14.905Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

FKIE_CVE-2026-31491

CVE-2026-31491 (GCVE-0-2026-31491)

Tags

Sightings

Nomenclature