{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2023-53338",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53338",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-09-17T14:56:32.302Z",
    "updatedAt": "2026-08-05T09:13:35.491Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "lwt: Fix return values of BPF xmit ops",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nlwt: Fix return values of BPF xmit ops\n\nBPF encap ops can return different types of positive values, such like\nNET_RX_DROP, NET_XMIT_CN, NETDEV_TX_BUSY, and so on, from function\nskb_do_redirect and bpf_lwt_xmit_reroute. At the xmit hook, such return\nvalues would be treated implicitly as LWTUNNEL_XMIT_CONTINUE in\nip(6)_finish_output2. When this happens, skbs that have been freed would\ncontinue to the neighbor subsystem, causing use-after-free bug and\nkernel crashes.\n\nTo fix the incorrect behavior, skb_do_redirect return values can be\nsimply discarded, the same as tc-egress behavior. On the other hand,\nbpf_lwt_xmit_reroute returns useful errors to local senders, e.g. PMTU\ninformation. Thus convert its return values to avoid the conflict with\nLWTUNNEL_XMIT_CONTINUE.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "3a0af8fd61f90920f6fa04e4f1e9a6a73c1b4fd2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "67f8f2bae8e7ac72e09def2b667e44704c4d1ee1"
            },
            {
              "version": "3a0af8fd61f90920f6fa04e4f1e9a6a73c1b4fd2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a97f221651fcdc891166e9bc270e3d9bfa5a0080"
            },
            {
              "version": "3a0af8fd61f90920f6fa04e4f1e9a6a73c1b4fd2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e3f647e4b642f9f6d32795a16f92c116c138d2af"
            },
            {
              "version": "3a0af8fd61f90920f6fa04e4f1e9a6a73c1b4fd2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "065d5f17096ec9161180e2c890afdff4dc6125f2"
            },
            {
              "version": "3a0af8fd61f90920f6fa04e4f1e9a6a73c1b4fd2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d68c17402442f5f494a2c3ebde5cb82f6aa9160a"
            },
            {
              "version": "3a0af8fd61f90920f6fa04e4f1e9a6a73c1b4fd2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "65583f9e070db7bece20710cfa2e3daeb0b831d9"
            },
            {
              "version": "3a0af8fd61f90920f6fa04e4f1e9a6a73c1b4fd2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "29b22badb7a84b783e3a4fffca16f7768fb31205"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.10",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.10"
            },
            {
              "version": "5.4.257",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.195",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.132",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.53",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.4.16",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.4.*"
            },
            {
              "version": "6.5.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.5.*"
            },
            {
              "version": "6.6",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}