Vulnerability-Lookup

FKIE_CVE-2026-46026

Vulnerability from fkie_nvd - Published: 2026-05-27 14:17 - Updated: 2026-05-27 14:48

Severity

Summary

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: ns: Limit the maximum number of lookups Current code does no bound checking on the number of lookups a client can perform. Though the code restricts the lookups to local clients, there is still a possibility of a malicious local client sending a flood of NEW_LOOKUP messages over the same socket. Fix this issue by limiting the maximum number of lookups to 64 globally. Since the nameserver allows only atmost one local observer, this global lookup count will ensure that the lookups stay within the limit. Note that, limit of 64 is chosen based on the current platform requirements. If requirement changes in the future, this limit can be increased.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/20855cef7e659ef84ac73251256fa530819b2346
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2b930bc77e00cb27e1d6e1d497b3b596283465ef
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5640227d9a21c6a8be249a10677b832e7f40dc55
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/76adf8f69b0bb3ab20be7c58f5d555027332d113

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: ns: Limit the maximum number of lookups\n\nCurrent code does no bound checking on the number of lookups a client can\nperform. Though the code restricts the lookups to local clients, there is\nstill a possibility of a malicious local client sending a flood of\nNEW_LOOKUP messages over the same socket.\n\nFix this issue by limiting the maximum number of lookups to 64 globally.\nSince the nameserver allows only atmost one local observer, this global\nlookup count will ensure that the lookups stay within the limit.\n\nNote that, limit of 64 is chosen based on the current platform\nrequirements. If requirement changes in the future, this limit can be\nincreased."
    }
  ],
  "id": "CVE-2026-46026",
  "lastModified": "2026-05-27T14:48:03.013",
  "metrics": {},
  "published": "2026-05-27T14:17:21.160",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/20855cef7e659ef84ac73251256fa530819b2346"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2b930bc77e00cb27e1d6e1d497b3b596283465ef"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5640227d9a21c6a8be249a10677b832e7f40dc55"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/76adf8f69b0bb3ab20be7c58f5d555027332d113"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

CVE-2026-46026 (GCVE-0-2026-46026)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:56 – Updated: 2026-05-27 12:56

Title

net: qrtr: ns: Limit the maximum number of lookups

Summary

Severity

No CVSS data available.

Assigner

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/0dbec101a7076e9b1…
https://git.kernel.org/stable/c/76adf8f69b0bb3ab2…
https://git.kernel.org/stable/c/20855cef7e659ef84…
https://git.kernel.org/stable/c/2b930bc77e00cb27e…
https://git.kernel.org/stable/c/5640227d9a21c6a8b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 0c2204a4ad710d95d348ea006f14ba926e842ffd , < 0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3 (git) Affected: 0c2204a4ad710d95d348ea006f14ba926e842ffd , < 76adf8f69b0bb3ab20be7c58f5d555027332d113 (git) Affected: 0c2204a4ad710d95d348ea006f14ba926e842ffd , < 20855cef7e659ef84ac73251256fa530819b2346 (git) Affected: 0c2204a4ad710d95d348ea006f14ba926e842ffd , < 2b930bc77e00cb27e1d6e1d497b3b596283465ef (git) Affected: 0c2204a4ad710d95d348ea006f14ba926e842ffd , < 5640227d9a21c6a8be249a10677b832e7f40dc55 (git)
Linux	Linux	Affected: 5.7 Unaffected: 0 , < 5.7 (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.86 , ≤ 6.12.* (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/qrtr/ns.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3",
              "status": "affected",
              "version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
              "versionType": "git"
            },
            {
              "lessThan": "76adf8f69b0bb3ab20be7c58f5d555027332d113",
              "status": "affected",
              "version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
              "versionType": "git"
            },
            {
              "lessThan": "20855cef7e659ef84ac73251256fa530819b2346",
              "status": "affected",
              "version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
              "versionType": "git"
            },
            {
              "lessThan": "2b930bc77e00cb27e1d6e1d497b3b596283465ef",
              "status": "affected",
              "version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
              "versionType": "git"
            },
            {
              "lessThan": "5640227d9a21c6a8be249a10677b832e7f40dc55",
              "status": "affected",
              "version": "0c2204a4ad710d95d348ea006f14ba926e842ffd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/qrtr/ns.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.7"
            },
            {
              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.27",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.140",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.86",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.27",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.4",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1-rc1",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: ns: Limit the maximum number of lookups\n\nCurrent code does no bound checking on the number of lookups a client can\nperform. Though the code restricts the lookups to local clients, there is\nstill a possibility of a malicious local client sending a flood of\nNEW_LOOKUP messages over the same socket.\n\nFix this issue by limiting the maximum number of lookups to 64 globally.\nSince the nameserver allows only atmost one local observer, this global\nlookup count will ensure that the lookups stay within the limit.\n\nNote that, limit of 64 is chosen based on the current platform\nrequirements. If requirement changes in the future, this limit can be\nincreased."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:56:32.596Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3"
        },
        {
          "url": "https://git.kernel.org/stable/c/76adf8f69b0bb3ab20be7c58f5d555027332d113"
        },
        {
          "url": "https://git.kernel.org/stable/c/20855cef7e659ef84ac73251256fa530819b2346"
        },
        {
          "url": "https://git.kernel.org/stable/c/2b930bc77e00cb27e1d6e1d497b3b596283465ef"
        },
        {
          "url": "https://git.kernel.org/stable/c/5640227d9a21c6a8be249a10677b832e7f40dc55"
        }
      ],
      "title": "net: qrtr: ns: Limit the maximum number of lookups",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46026",
    "datePublished": "2026-05-27T12:56:32.596Z",
    "dateReserved": "2026-05-13T15:03:33.093Z",
    "dateUpdated": "2026-05-27T12:56:32.596Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

FKIE_CVE-2026-46026

CVE-2026-46026 (GCVE-0-2026-46026)

Tags

Sightings

Nomenclature