Vulnerability-Lookup

UBUNTU-CVE-2026-98579 (CVE-2026-98579)

Vulnerability from osv_ubuntu – Published: 2026-10-18 16:17 – Updated: 2026-10-30 19:02 – Source website

Details

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: fix sdreq TLV list leak on parse/alloc/send failure nfc_genl_llc_sdreq() builds a list of TLV nodes while walking nested netlink attrs, but 3 error paths (nested-attr parse failure, TLV alloc ENOMEM, nfc_llcp_send_snl_sdreq() failure) all skip freeing what was already queued. Route them through a new free_list label, mirroring the SDRES path in the same file which already does this. Harmless on the success path too -- send_snl_sdreq() drains the list as it moves nodes, so it's already empty by the time free_list runs.

Severity

N/A (UNKNOWN)

low

References

URL

Type

	https://ubuntu.com/security/CVE-2026-98579	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-98579	REPORT
	https://git.kernel.org/stable/c/755bfc409748d8f3d…	REPORT
	https://git.kernel.org/stable/c/0b01a946b0f234f5b…	REPORT
	https://git.kernel.org/stable/c/d3f60a7fc291d08cd…	REPORT
	https://git.kernel.org/stable/c/66f4300206b82b0b1…	REPORT
	https://git.kernel.org/stable/c/08d2c069239ab425f…	REPORT
	https://git.kernel.org/stable/c/5b1eca82085134bd9…	REPORT
	https://git.kernel.org/stable/c/cbde7f5d326172d6d…	REPORT
	https://git.kernel.org/stable/c/e43ec0191c1630f41…	REPORT

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CVE-2026-98579 (GCVE-0-2026-98579)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:18 – Updated: 2026-10-19 09:22

Title

nfc: llcp: fix sdreq TLV list leak on parse/alloc/send failure

Summary

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6820 records in the last 180 days details

References

8 references

URL	Tags
https://git.kernel.org/stable/c/5b1eca82085134bd9…
https://git.kernel.org/stable/c/d3f60a7fc291d08cd…
https://git.kernel.org/stable/c/755bfc409748d8f3d…
https://git.kernel.org/stable/c/e43ec0191c1630f41…
https://git.kernel.org/stable/c/08d2c069239ab425f…
https://git.kernel.org/stable/c/cbde7f5d326172d6d…
https://git.kernel.org/stable/c/0b01a946b0f234f5b…
https://git.kernel.org/stable/c/66f4300206b82b0b1…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d9b8d8e19b073096d3609bbd60f82148d128b555 , < 5b1eca82085134bd92cd3810b0ef003c91e3f668 (git) Affected: d9b8d8e19b073096d3609bbd60f82148d128b555 , < d3f60a7fc291d08cd9192a3b4cd5d3a223fa7d02 (git) Affected: d9b8d8e19b073096d3609bbd60f82148d128b555 , < 755bfc409748d8f3df64eb0eb26926270de3dd77 (git) Affected: d9b8d8e19b073096d3609bbd60f82148d128b555 , < e43ec0191c1630f41e7043ac729ea6f1b8044a7f (git) Affected: d9b8d8e19b073096d3609bbd60f82148d128b555 , < 08d2c069239ab425fdd333784a6a3b3e034e4aa0 (git) Affected: d9b8d8e19b073096d3609bbd60f82148d128b555 , < cbde7f5d326172d6dbb55cca0df42fa7e1ed8115 (git) Affected: d9b8d8e19b073096d3609bbd60f82148d128b555 , < 0b01a946b0f234f5badd25968610b585a4895f08 (git) Affected: d9b8d8e19b073096d3609bbd60f82148d128b555 , < 66f4300206b82b0b143ef0d9be90cd8d29f23a47 (git)
Linux	Linux	Affected: 3.10 Unaffected: 0 , < 3.10 (semver) Unaffected: 5.10.271 , ≤ 5.10.* (semver) Unaffected: 5.15.222 , ≤ 5.15.* (semver) Unaffected: 6.1.189 , ≤ 6.1.* (semver) Unaffected: 6.6.158 , ≤ 6.6.* (semver) Unaffected: 6.12.112 , ≤ 6.12.* (semver) Unaffected: 6.18.55 , ≤ 6.18.* (semver) Unaffected: 7.2.9 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/nfc/netlink.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "d9b8d8e19b073096d3609bbd60f82148d128b555",
              "versionType": "git"
            },
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              "version": "d9b8d8e19b073096d3609bbd60f82148d128b555",
              "versionType": "git"
            },
            {
              "lessThan": "755bfc409748d8f3df64eb0eb26926270de3dd77",
              "status": "affected",
              "version": "d9b8d8e19b073096d3609bbd60f82148d128b555",
              "versionType": "git"
            },
            {
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        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/nfc/netlink.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.10"
            },
            {
              "lessThan": "3.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.271",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.222",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.189",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.158",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.112",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.55",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.9",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                }
              ],
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            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: fix sdreq TLV list leak on parse/alloc/send failure\n\nnfc_genl_llc_sdreq() builds a list of TLV nodes while walking nested\nnetlink attrs, but 3 error paths (nested-attr parse failure, TLV alloc\nENOMEM, nfc_llcp_send_snl_sdreq() failure) all skip freeing what was\nalready queued.\n\nRoute them through a new free_list label, mirroring the SDRES path in\nthe same file which already does this. Harmless on the success path\ntoo -- send_snl_sdreq() drains the list as it moves nodes, so it\u0027s\nalready empty by the time free_list runs."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:22:04.617Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/5b1eca82085134bd92cd3810b0ef003c91e3f668"
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        {
          "url": "https://git.kernel.org/stable/c/755bfc409748d8f3df64eb0eb26926270de3dd77"
        },
        {
          "url": "https://git.kernel.org/stable/c/e43ec0191c1630f41e7043ac729ea6f1b8044a7f"
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        },
        {
          "url": "https://git.kernel.org/stable/c/66f4300206b82b0b143ef0d9be90cd8d29f23a47"
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      ],
      "title": "nfc: llcp: fix sdreq TLV list leak on parse/alloc/send failure",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98579",
    "datePublished": "2026-10-18T15:18:52.611Z",
    "dateReserved": "2026-09-25T10:25:14.358Z",
    "dateUpdated": "2026-10-19T09:22:04.617Z",
    "state": "PUBLISHED"
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}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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