{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "84c61fe1a75b4255df1e1e7c054c9e6d048da417"
            },
            {
              "fixed": "0c9f399b37ce22a5ed94cc51f03ed07ac7f38e32"
            },
            {
              "fixed": "688f12aa44511dd57e448eb670075c6302ad1dc1"
            },
            {
              "fixed": "3c405dfa9619e506e75b8e41f8b29a5b99731877"
            },
            {
              "fixed": "9c54e76f8d6eb11735918777ef0e0509e089557d"
            },
            {
              "fixed": "bd07fe6c38b9e44ff3fc02692a53f095c5cc9afc"
            },
            {
              "fixed": "58689498ca3384851145a754dbb1d8ed1cf9fb54"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.141"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.91"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.33"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52974.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: tls: fix strparser anchor skb leak on offload RX setup failure\n\nWhen tls_set_device_offload_rx() fails at tls_dev_add(), the error path\ncalls tls_sw_free_resources_rx() to clean up the SW context that was\ninitialized by tls_set_sw_offload(). This function calls\ntls_sw_release_resources_rx() (which stops the strparser via\ntls_strp_stop()) and tls_sw_free_ctx_rx() (which kfrees the context),\nbut never frees the anchor skb that was allocated by alloc_skb(0) in\ntls_strp_init().\n\nNote that tls_sw_free_resources_rx() is exclusively used for this\n\"failed to start offload\" code path, there's no other caller.\n\nThe leak did not exist before commit 84c61fe1a75b (\"tls: rx: do not use\nthe standard strparser\"), because the standard strparser doesn't try\nto pre-allocate an skb.\n\nThe normal close path in tls_sk_proto_close() handles cleanup by calling\ntls_sw_strparser_done() (which calls tls_strp_done()) after dropping\nthe socket lock, because tls_strp_done() does cancel_work_sync() and\nthe strparser work handler takes the socket lock.",
  "id": "CVE-2026-52974",
  "modified": "2026-07-12T03:55:03.933216132Z",
  "published": "2026-06-24T16:28:51.826Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c9f399b37ce22a5ed94cc51f03ed07ac7f38e32"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3c405dfa9619e506e75b8e41f8b29a5b99731877"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/58689498ca3384851145a754dbb1d8ed1cf9fb54"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/688f12aa44511dd57e448eb670075c6302ad1dc1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9c54e76f8d6eb11735918777ef0e0509e089557d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bd07fe6c38b9e44ff3fc02692a53f095c5cc9afc"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52974.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52974"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "net: tls: fix strparser anchor skb leak on offload RX setup failure"
}