{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0fb0b02bd6fd26cba38002be4a6bbcae2228fd44"
            },
            {
              "fixed": "e384f3cba6ea709f5b2272b1770db4ce14047f78"
            },
            {
              "fixed": "a1e980d7a9e7ee6faf4f5fd7b450413b969af26d"
            },
            {
              "fixed": "e0eb87677c76b157cdf8eb7c1f19e56227165a33"
            },
            {
              "fixed": "06734dfeaeba886aab1bf147249195b888ac3e4d"
            },
            {
              "fixed": "c23c409228629107203d3c3e95fff1473173f1a6"
            },
            {
              "fixed": "10cb31b2b74cb664c6c95cf72364d7d5c483ab82"
            },
            {
              "fixed": "bfc336a9fbbf09805f3dfe25c195a4db90af2846"
            },
            {
              "fixed": "976245094925bab9bc39366b2e9ab44ffcde61d0"
            }
          ],
          "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": "5.10.265"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.216"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.183"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.152"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.104"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.45"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74719.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix qentry overwrite for CONFIRM_LINK and ADD_LINK_CONT in smc_llc_event_handler()\n\nThe SMC_LLC_CONFIRM_LINK / SMC_LLC_ADD_LINK_CONT branch in\nsmc_llc_event_handler() stores an incoming qentry into the local LLC flow\nwithout first checking whether a qentry is already pending. If a malicious or\nbuggy peer sends a second CONFIRM_LINK or ADD_LINK_CONT request while a flow is\nactive and flow-\u003eqentry is already set, smc_llc_flow_qentry_set() overwrites the\npointer without freeing the previous allocation, leaking one kmalloc-96 object\nper spurious message.\n\nThe sibling SMC_LLC_DELETE_LINK branch already has the correct !flow-\u003eqentry\nguard. Apply the same guard to the CONFIRM_LINK/ADD_LINK_CONT branch so that a\nduplicate message when qentry is already occupied falls through to break and is\nfreed by the kfree(qentry) at the out: label, rather than silently leaking the\nexisting allocation.\n\nThe response direction (smc_llc_rx_response()) is unaffected: it already guards\nwith flow-\u003eqentry at the equivalent site and drops duplicate responses\ncorrectly.",
  "id": "CVE-2026-74719",
  "modified": "2026-08-24T11:36:06.279525978Z",
  "published": "2026-08-22T15:33:12.716Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/06734dfeaeba886aab1bf147249195b888ac3e4d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/10cb31b2b74cb664c6c95cf72364d7d5c483ab82"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/976245094925bab9bc39366b2e9ab44ffcde61d0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a1e980d7a9e7ee6faf4f5fd7b450413b969af26d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bfc336a9fbbf09805f3dfe25c195a4db90af2846"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c23c409228629107203d3c3e95fff1473173f1a6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e0eb87677c76b157cdf8eb7c1f19e56227165a33"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e384f3cba6ea709f5b2272b1770db4ce14047f78"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74719.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74719"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "net/smc: fix qentry overwrite for CONFIRM_LINK and ADD_LINK_CONT in smc_llc_event_handler()"
}