{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "555da9af827d95134656fa459c8f3ece04dd867a"
            },
            {
              "fixed": "8e3deb150a5237b672c4579e69a6deb02027dbed"
            },
            {
              "fixed": "11bc373ee6630709f0c2da2e7860c23d503c9e9d"
            },
            {
              "fixed": "032aec7d03c9102616b98fea74f8f7145e7f867c"
            },
            {
              "fixed": "957dba2b8b5aebfe09caa6a6b22b958079082eab"
            },
            {
              "fixed": "f03aa5d36ae3c4068a1c3885146be99aa7fd9307"
            },
            {
              "fixed": "0879ea157acc1ac6752f6fcb755d1f91a2359238"
            },
            {
              "fixed": "5ff429dd6725fa6c1e17a4ed0be8ab675f67a98b"
            },
            {
              "fixed": "5ee0ceddc7785c6dcf4a8107fef01f0414a354f4"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.8.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90107.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: free pending qentry in smc_llc_flow_stop() before memset\n\nsmc_llc_flow_stop() resets a flow struct with a blind memset:\n\n\tspin_lock_bh(\u0026lgr-\u003ellc_flow_lock);\n\tmemset(flow, 0, sizeof(*flow));\n\tflow-\u003etype = SMC_LLC_FLOW_NONE;\n\tspin_unlock_bh(\u0026lgr-\u003ellc_flow_lock);\n\nIf flow-\u003eqentry is non-NULL at this point the pointer is overwritten without the\nallocation being freed, leaking one kmalloc object.\n\nA late-arriving duplicate CONFIRM_LINK or ADD_LINK_CONT message can set\nflow-\u003eqentry after the legitimate message has been consumed by the waiter via\nsmc_llc_flow_qentry_clr() (which NULLs the pointer but leaves flow-\u003etype\nnon-zero) but before the flow completes and smc_llc_flow_stop() runs.  In that\nwindow the duplicate is stashed into flow-\u003eqentry, and then lost when\nsmc_llc_flow_stop() zeros the struct.\n\nCall smc_llc_flow_qentry_del() inside the lock before the memset.\nsmc_llc_flow_qentry_del() already checks flow-\u003eqentry before freeing, so the\nnormal case where no entry is pending is a no-op.",
  "id": "CVE-2026-90107",
  "modified": "2026-09-19T03:30:18.230752777Z",
  "published": "2026-09-17T16:06:16.157Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/032aec7d03c9102616b98fea74f8f7145e7f867c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0879ea157acc1ac6752f6fcb755d1f91a2359238"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/11bc373ee6630709f0c2da2e7860c23d503c9e9d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5ee0ceddc7785c6dcf4a8107fef01f0414a354f4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5ff429dd6725fa6c1e17a4ed0be8ab675f67a98b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8e3deb150a5237b672c4579e69a6deb02027dbed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/957dba2b8b5aebfe09caa6a6b22b958079082eab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f03aa5d36ae3c4068a1c3885146be99aa7fd9307"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90107.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90107"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "net/smc: free pending qentry in smc_llc_flow_stop() before memset"
}