{
  "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-2022-50476",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-50476",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2025-10-04T15:16:36.895Z",
    "updatedAt": "2026-05-11T19:20:13.817Z",
    "importedAt": "2026-10-24T01:56:49.724Z",
    "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": "ntb_netdev: Use dev_kfree_skb_any() in interrupt context",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nntb_netdev: Use dev_kfree_skb_any() in interrupt context\n\nTX/RX callback handlers (ntb_netdev_tx_handler(),\nntb_netdev_rx_handler()) can be called in interrupt\ncontext via the DMA framework when the respective\nDMA operations have completed. As such, any calls\nby these routines to free skb's, should use the\ninterrupt context safe dev_kfree_skb_any() function.\n\nPreviously, these callback handlers would call the\ninterrupt unsafe version of dev_kfree_skb(). This has\nnot presented an issue on Intel IOAT DMA engines as\nthat driver utilizes tasklets rather than a hard\ninterrupt handler, like the AMD PTDMA DMA driver.\nOn AMD systems, a kernel WARNING message is\nencountered, which is being issued from\nskb_release_head_state() due to in_hardirq()\nbeing true.\n\nBesides the user visible WARNING from the kernel,\nthe other symptom of this bug was that TCP/IP performance\nacross the ntb_netdev interface was very poor, i.e.\napproximately an order of magnitude below what was\nexpected. With the repair to use dev_kfree_skb_any(),\nkernel WARNINGs from skb_release_head_state() ceased\nand TCP/IP performance, as measured by iperf, was on\npar with expected results, approximately 20 Gb/s on\nAMD Milan based server. Note that this performance\nis comparable with Intel based servers.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "548c237c0a9972df5d1afaca38aa733ee577128d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d4460c82177899751975180c268f352893302221"
            },
            {
              "version": "548c237c0a9972df5d1afaca38aa733ee577128d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "dd860b39aa7c7b82e6c99b6fdb99d4610ce49d67"
            },
            {
              "version": "548c237c0a9972df5d1afaca38aa733ee577128d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8b78493968ed3cef0326183ed059c55e42f24d5b"
            },
            {
              "version": "548c237c0a9972df5d1afaca38aa733ee577128d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a6b9e09403102bdf8402dae734800e4916c7ea58"
            },
            {
              "version": "548c237c0a9972df5d1afaca38aa733ee577128d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "13286ad1c7c49c606fdcba4cf66f953a1a16c1ca"
            },
            {
              "version": "548c237c0a9972df5d1afaca38aa733ee577128d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "21296a52caa6a6bad6debdfe40ad81d4f1a27e69"
            },
            {
              "version": "548c237c0a9972df5d1afaca38aa733ee577128d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "14d245da57a11e80277ab455aa9b6dcc5ed38a19"
            },
            {
              "version": "548c237c0a9972df5d1afaca38aa733ee577128d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "07e28a8f450217db679802ebd4de0915556ce846"
            },
            {
              "version": "548c237c0a9972df5d1afaca38aa733ee577128d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5f7d78b2b12a9d561f48fa00bab29b40f4616dad"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.9",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.9"
            },
            {
              "version": "4.9.337",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.9.*"
            },
            {
              "version": "4.14.303",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.270",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.229",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.163",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.86",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.0.16",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "version": "6.1.2",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}