Vulnerability-Lookup

FKIE_CVE-2024-39292

Vulnerability from fkie_nvd - Published: 2024-06-24 14:15 - Updated: 2026-08-04 11:18

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: um: Add winch to winch_handlers before registering winch IRQ Registering a winch IRQ is racy, an interrupt may occur before the winch is added to the winch_handlers list. If that happens, register_winch_irq() adds to that list a winch that is scheduled to be (or has already been) freed, causing a panic later in winch_cleanup(). Avoid the race by adding the winch to the winch_handlers list before registering the IRQ, and rolling back if um_request_irq() fails.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0c02d425a2fbe52643a5859a779db0329e7dddd4	Mailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/31960d991e43c8d6dc07245f19fc13398e90ead2	Mailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/351d1a64544944b44732f6a64ed65573b00b9e14	Mailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/434a06c38ee1217a8baa0dd7c37cc85d50138fb0	Mailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/66ea9a7c6824821476914bed21a476cd20094f33	Mailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/73b8e21f76c7dda4905655d2e2c17dc5a73b87f1	Mailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a0fbbd36c156b9f7b2276871d499c9943dfe5101	Mailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/dc1ff95602ee908fcd7d8acee7a0dadb61b1a0c0	Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/0c02d425a2fbe52643a5859a779db0329e7dddd4	Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/31960d991e43c8d6dc07245f19fc13398e90ead2	Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/351d1a64544944b44732f6a64ed65573b00b9e14	Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/434a06c38ee1217a8baa0dd7c37cc85d50138fb0	Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/66ea9a7c6824821476914bed21a476cd20094f33	Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/73b8e21f76c7dda4905655d2e2c17dc5a73b87f1	Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/a0fbbd36c156b9f7b2276871d499c9943dfe5101	Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/dc1ff95602ee908fcd7d8acee7a0dadb61b1a0c0	Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.10.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/um/drivers/line.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "66ea9a7c6824821476914bed21a476cd20094f33",
              "status": "affected",
              "version": "42a359e31a0e438b5b978a8f0fecdbd3c86bb033",
              "versionType": "git"
            },
            {
              "lessThan": "dc1ff95602ee908fcd7d8acee7a0dadb61b1a0c0",
              "status": "affected",
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              "versionType": "git"
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            {
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              "versionType": "git"
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            {
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              "versionType": "git"
            },
            {
              "lessThan": "0c02d425a2fbe52643a5859a779db0329e7dddd4",
              "status": "affected",
              "version": "42a359e31a0e438b5b978a8f0fecdbd3c86bb033",
              "versionType": "git"
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            {
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              "status": "affected",
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            },
            {
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              "status": "affected",
              "version": "42a359e31a0e438b5b978a8f0fecdbd3c86bb033",
              "versionType": "git"
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.23"
            },
            {
              "lessThan": "2.6.23",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.316",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.278",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.219",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.161",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.93",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "CE323F46-5BE8-40FC-B564-B21ADE5D4DC6",
              "versionEndExcluding": "2.6.23",
              "vulnerable": true
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "34445C8D-D7E6-4796-B792-C9257E89257B",
              "versionEndExcluding": "4.19.316",
              "versionStartIncluding": "4.19",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8E2371B0-4787-4038-B526-021D4CF93B31",
              "versionEndExcluding": "5.4.278",
              "versionStartIncluding": "5.4",
              "vulnerable": true
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5311C980-4CDF-4C10-8875-F04ED0F03398",
              "versionEndExcluding": "5.10.219",
              "versionStartIncluding": "5.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E2AB5A01-EFFD-4A24-8CCB-4A016C8C4BB3",
              "versionEndExcluding": "5.15.161",
              "versionStartIncluding": "5.15",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7446FC33-DC4F-4D31-94B5-FB577CFA66F4",
              "versionEndExcluding": "6.1.93",
              "versionStartIncluding": "6.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "53BC60D9-65A5-4D8F-96C8-149F09214DBD",
              "versionEndExcluding": "6.6.33",
              "versionStartIncluding": "6.6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A500F935-F0ED-4DC7-AD02-9D7C365D13AE",
              "versionEndExcluding": "6.9.4",
              "versionStartIncluding": "6.9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.10.0:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "C40DD2D9-90E3-4E95-9F1A-E7C680F11F2A",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\num: Add winch to winch_handlers before registering winch IRQ\n\nRegistering a winch IRQ is racy, an interrupt may occur before the winch is\nadded to the winch_handlers list.\n\nIf that happens, register_winch_irq() adds to that list a winch that is\nscheduled to be (or has already been) freed, causing a panic later in\nwinch_cleanup().\n\nAvoid the race by adding the winch to the winch_handlers list before\nregistering the IRQ, and rolling back if um_request_irq() fails."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: um: Agregar cabrestante a winch_handlers antes de registrar la IRQ del cabrestante Registrar una IRQ del cabrestante es picante, puede ocurrir una interrupci\u00f3n antes de que el cabrestante se agregue a la lista de winch_handlers. Si eso sucede, Register_winch_irq() agrega a esa lista un cabrestante que est\u00e1 programado para ser liberado (o que ya ha sido) liberado, causando p\u00e1nico m\u00e1s adelante en winch_cleanup(). Evite la ejecuci\u00f3n agregando el cabrestante a la lista winch_handlers antes de registrar la IRQ y retrocediendo si um_request_irq() falla."
    }
  ],
  "id": "CVE-2024-39292",
  "lastModified": "2026-08-04T11:18:55.397",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-39292",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-06-24T15:15:10.639136Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-06-24T14:15:12.943",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Mailing List",
        "Patch"
      ],
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    },
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
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        "Patch"
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    },
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
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      "tags": [
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        "Patch"
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    },
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    },
    {
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    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
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      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-415"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2024-39292 (GCVE-0-2024-39292)

Vulnerability from cvelistv5 – Published: 2024-06-24 13:52 – Updated: 2026-08-05 11:33

Title

um: Add winch to winch_handlers before registering winch IRQ

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-06-24 15:15 UTC

Assigner

Linux mitre root Scorecard

References

9 references

URL	Tags
https://git.kernel.org/stable/c/66ea9a7c682482147…
https://git.kernel.org/stable/c/dc1ff95602ee908fc…
https://git.kernel.org/stable/c/351d1a64544944b44…
https://git.kernel.org/stable/c/31960d991e43c8d6d…
https://git.kernel.org/stable/c/0c02d425a2fbe5264…
https://git.kernel.org/stable/c/434a06c38ee1217a8…
https://git.kernel.org/stable/c/73b8e21f76c7dda49…
https://git.kernel.org/stable/c/a0fbbd36c156b9f7b…
https://lists.debian.org/debian-lts-announce/2024…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 , < 66ea9a7c6824821476914bed21a476cd20094f33 (git) Affected: 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 , < dc1ff95602ee908fcd7d8acee7a0dadb61b1a0c0 (git) Affected: 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 , < 351d1a64544944b44732f6a64ed65573b00b9e14 (git) Affected: 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 , < 31960d991e43c8d6dc07245f19fc13398e90ead2 (git) Affected: 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 , < 0c02d425a2fbe52643a5859a779db0329e7dddd4 (git) Affected: 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 , < 434a06c38ee1217a8baa0dd7c37cc85d50138fb0 (git) Affected: 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 , < 73b8e21f76c7dda4905655d2e2c17dc5a73b87f1 (git) Affected: 42a359e31a0e438b5b978a8f0fecdbd3c86bb033 , < a0fbbd36c156b9f7b2276871d499c9943dfe5101 (git)
Linux	Linux	Affected: 2.6.23 Unaffected: 0 , < 2.6.23 (semver) Unaffected: 4.19.316 , ≤ 4.19.* (semver) Unaffected: 5.4.278 , ≤ 5.4.* (semver) Unaffected: 5.10.219 , ≤ 5.10.* (semver) Unaffected: 5.15.161 , ≤ 5.15.* (semver) Unaffected: 6.1.93 , ≤ 6.1.* (semver) Unaffected: 6.6.33 , ≤ 6.6.* (semver) Unaffected: 6.9.4 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix)

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                "id": "CVE-2024-39292",
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              "versionType": "semver"
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              "versionType": "semver"
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              "version": "6.6.33",
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              "value": "AV:L - The vulnerable code is UML console/tty setup reached by opening a UML console or serial device (`/dev/tty*`, `/dev/ttyS*`) inside the guest, i.e. via a local `open()` syscall. Although the `con=port:` telnet channel type can have its setup triggered by an incoming connection, the standard and reliable reach is local.\nAC:L - The attacker creates and repeats the race themselves \u2014 closing and reopening the line clears `line-\u003esigio` and re-runs `register_winch_irq()`, so the tiny window between `um_request_irq()` and `list_add()` can be attacked in an unbounded retry loop. Once the early interrupt lands, the freed object stays linked in the global `winch_handlers` list deterministically, and the later dereference is delayed long enough for reliable heap grooming.\nPR:L - No capability or credential check exists anywhere on the path from `open()` through `line_open()` \u2192 `line_activate()` \u2192 `register_winch_irq()`; only device-node permissions gate it, and a plain unprivileged guest user is sufficient both to open a console/serial line and to spray the `kmalloc-96` slab that reclaims the freed `struct winch`.\nUI:N - Winch registration happens automatically when a configured console line is first opened (including at boot), and the attacker can drive that open themselves. No action by any other user is required.\nS:U - The corruption and its impact are confined to the UML kernel\u0027s own memory and the process it already fully controls, which is standard in-kernel privilege escalation. No hypervisor, IOMMU, or sandbox authority boundary is crossed by the vulnerable component.\nC:H - This is a use-after-free on a small, easily reclaimed slab object; the later walk of `winch_handlers` calls `tty_port_tty_get(winch-\u003eport)` on an attacker-controlled pointer, giving an arbitrary-dereference read primitive usable to disclose kernel memory.\nI:H - The stale `list_add()` writes two pointers into freed (reclaimable) memory, and the later `free_winch()` performs `free_stack(winch-\u003estack, 0)` on an attacker-controlled address plus a double `kfree()` and `os_kill_process(winch-\u003epid, 1)`, yielding write/free primitives suitable for control-flow hijack.\nA:H - The commit itself states the dangling list entry causes a panic in `winch_cleanup()`, and any use-after-free of this kind reliably produces an oops or kernel panic in the UML instance."
            }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-39292",
    "datePublished": "2024-06-24T13:52:26.769Z",
    "dateReserved": "2024-06-21T11:16:40.627Z",
    "dateUpdated": "2026-08-05T11:33:22.163Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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FKIE_CVE-2024-39292

CVE-2024-39292 (GCVE-0-2024-39292)

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