{
  "affected": [
    {
      "ranges": [
        {
          "events": [
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              "introduced": "ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c"
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            },
            {
              "fixed": "086944c1c2cbb683543bc3ff08637847b03c8009"
            },
            {
              "fixed": "84e3ea6502b5f14ce8d499d0b6e0e38386274cf0"
            },
            {
              "fixed": "93ccaf1c26e2133396173b76a071e59024daa622"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
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              "introduced": "4.4.159"
            },
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              "fixed": "4.5"
            }
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
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            },
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            }
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
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            },
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            }
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          "type": "GIT"
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            },
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            }
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
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          "type": "GIT"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.19.0"
            },
            {
              "fixed": "5.10.273"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.224"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.191"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.160"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.113"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.57"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99057.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen/netfront: don't leak the skb when xennet_fill_frags() fails\n\nWhen a response chain has more slots than fit in the skb's frags,\nxennet_fill_frags() returns an error and xennet_poll() jumps to its\nerror path.  That path moves what's left on tmpq to errq to be freed,\nbut the skb being filled was already dequeued from tmpq, so it's never\nfreed.  Each chain that overflows leaks the skb and the pages attached\nto it as frags, and the backend decides how many slots it sends.\n\nPut the skb back on tmpq before taking the error path, like the\nxennet_set_skb_gso() failure just above it does.",
  "id": "CVE-2026-99057",
  "modified": "2026-11-01T02:30:40.535272924Z",
  "published": "2026-10-23T12:22:44.683Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/086944c1c2cbb683543bc3ff08637847b03c8009"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0cf0a25a639c535146c5eb4480d256995721aed6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5051df031144753d3e18862514969146b601d089"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/53a131eb2a998c77e2851401b32b712d6c6e8487"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e6bd1051daabc327233c3ca3d00613fc6783c8e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/84e3ea6502b5f14ce8d499d0b6e0e38386274cf0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/93ccaf1c26e2133396173b76a071e59024daa622"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/99011a11c97340ef7290df7dc199305c73fab2f2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99057.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-99057"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.2",
  "summary": "xen/netfront: don't leak the skb when xennet_fill_frags() fails"
}