CVE-2026-98559 (GCVE-0-2026-98559)
Vulnerability from cvelistv5
Published
2026-10-18 15:18
Modified
2026-10-19 09:21
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net/smc: fix UAF on lgr list traversal in smcr_port_err() smcr_port_err() traverses smc_lgr_list.list without holding smc_lgr_list.lock, allowing a concurrent smc_lgr_terminate_sched() to free an lgr while it is still being dereferenced. Hold smc_lgr_list.lock across the traversal. Update smc_ib_gid_check() to call smcr_port_err() after releasing the lock.
References
Impacted products
Vendor Product Version
Linux Linux Version: 541afa10c126b6c22c2a805a559c70cc41fd156e
Version: 541afa10c126b6c22c2a805a559c70cc41fd156e
Version: 541afa10c126b6c22c2a805a559c70cc41fd156e
Version: 541afa10c126b6c22c2a805a559c70cc41fd156e
Version: 541afa10c126b6c22c2a805a559c70cc41fd156e
Version: 541afa10c126b6c22c2a805a559c70cc41fd156e
Version: 541afa10c126b6c22c2a805a559c70cc41fd156e
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{
  "containers": {
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          "programFiles": [
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          "vendor": "Linux",
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              "version": "7.2.9",
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              "lessThanOrEqual": "*",
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              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix UAF on lgr list traversal in smcr_port_err()\n\nsmcr_port_err() traverses smc_lgr_list.list without holding\nsmc_lgr_list.lock, allowing a concurrent smc_lgr_terminate_sched()\nto free an lgr while it is still being dereferenced.\n\nHold smc_lgr_list.lock across the traversal. Update\nsmc_ib_gid_check() to call smcr_port_err() after releasing the lock."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:21:43.436Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/34bcf11cd2528ae00bb6d764d808083c66824277"
        },
        {
          "url": "https://git.kernel.org/stable/c/0edcc4284392b28826b5d37532b366b291e6e0fa"
        },
        {
          "url": "https://git.kernel.org/stable/c/00a59600ae72d24859d0ad1783a78bc921bc2599"
        },
        {
          "url": "https://git.kernel.org/stable/c/3d35f069e1c119992000d51236dbe54da2d4e61e"
        },
        {
          "url": "https://git.kernel.org/stable/c/3d65a2eb4449fc9658fb860dea893025d028d90e"
        },
        {
          "url": "https://git.kernel.org/stable/c/a9b968e42690d784c241a0761c10253271f7df5d"
        },
        {
          "url": "https://git.kernel.org/stable/c/61cb282fe97b3b0ba32ca09417a693162bf4ae3f"
        }
      ],
      "title": "net/smc: fix UAF on lgr list traversal in smcr_port_err()",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98559",
    "datePublished": "2026-10-18T15:18:26.349Z",
    "dateReserved": "2026-09-25T10:25:14.357Z",
    "dateUpdated": "2026-10-19T09:21:43.436Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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