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        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
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        "product_reference": "linux-cpupower-0:4.19.325-1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
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          "product_id": "Debian-10:linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64"
        },
        "product_reference": "linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10",
          "product_id": "Debian-10:hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64"
        },
        "product_reference": "hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
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          "product_id": "Debian-10:linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64"
        },
        "product_reference": "linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-31581",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "notes": [
        {
          "category": "description",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: 6fire: fix use-after-free on disconnect\n\nIn usb6fire_chip_abort(), the chip struct is allocated as the card's\nprivate data (via snd_card_new with sizeof(struct sfire_chip)).  When\nsnd_card_free_when_closed() is called and no file handles are open, the\ncard and embedded chip are freed synchronously.  The subsequent\nchip->card = NULL write then hits freed slab memory.\n\nCall trace:\n  usb6fire_chip_abort sound/usb/6fire/chip.c:59 [inline]\n  usb6fire_chip_disconnect+0x348/0x358 sound/usb/6fire/chip.c:182\n  usb_unbind_interface+0x1a8/0x88c drivers/usb/core/driver.c:458\n  ...\n  hub_event+0x1a04/0x4518 drivers/usb/core/hub.c:5953\n\nFix by moving the card lifecycle out of usb6fire_chip_abort() and into\nusb6fire_chip_disconnect().  The card pointer is saved in a local\nbefore any teardown, snd_card_disconnect() is called first to prevent\nnew opens, URBs are aborted while chip is still valid, and\nsnd_card_free_when_closed() is called last so chip is never accessed\nafter the card may be freed.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "under_investigation": [
          "Debian-10:hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:libbpf-dev-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:libbpf4.19-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:libcpupower-dev-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:libcpupower1-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-compiler-gcc-8-x86-0:4.19.325-1+tuxcare.els1.amd64",
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          "Debian-10:linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-headers-4.19.0-28-common-0:4.19.325-1+tuxcare.els1.all",
          "Debian-10:linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-image-amd64-signed-template-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-kbuild-4.19-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-libc-dev-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-perf-4.19-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-source-4.19-0:4.19.325-1+tuxcare.els1.all",
          "Debian-10:linux-support-4.19.0-28-0:4.19.325-1+tuxcare.els1.all"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-31581"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/3dc20d1981d6a67d8184498a5da272942dde1e65",
          "url": "https://git.kernel.org/stable/c/3dc20d1981d6a67d8184498a5da272942dde1e65"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/51f6532790b74ffdd6970bc848358a2838c1c185",
          "url": "https://git.kernel.org/stable/c/51f6532790b74ffdd6970bc848358a2838c1c185"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/af75b486f7e883e3422ece23c8d727e6815144a0",
          "url": "https://git.kernel.org/stable/c/af75b486f7e883e3422ece23c8d727e6815144a0"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/b9c826916fdce6419b94eb0cd8810fdac18c2386",
          "url": "https://git.kernel.org/stable/c/b9c826916fdce6419b94eb0cd8810fdac18c2386"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/ba88461f7653636c48321ca993006a74724c2f41",
          "url": "https://git.kernel.org/stable/c/ba88461f7653636c48321ca993006a74724c2f41"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/d21e8a2af4869b5890b34e081d5aeadc93e9cd5c",
          "url": "https://git.kernel.org/stable/c/d21e8a2af4869b5890b34e081d5aeadc93e9cd5c"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/e247a0e01d15ed420f77ec5e2335721bf430a5b3",
          "url": "https://git.kernel.org/stable/c/e247a0e01d15ed420f77ec5e2335721bf430a5b3"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/e719232f4552e29de8027a83918ea94434be87af",
          "url": "https://git.kernel.org/stable/c/e719232f4552e29de8027a83918ea94434be87af"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/e88354b381e2006de63d6b052ed7005c9a47d00e",
          "url": "https://git.kernel.org/stable/c/e88354b381e2006de63d6b052ed7005c9a47d00e"
        }
      ],
      "release_date": "2026-04-24T15:16:00Z",
      "remediations": [
        {
          "category": "none_available",
          "date": "2026-08-29T04:39:01.220520Z",
          "details": "Affected",
          "product_ids": [
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            "Debian-10:linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64",
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          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
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            "Debian-10:linux-compiler-gcc-8-x86-0:4.19.325-1+tuxcare.els1.amd64",
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    }
  ]
}