Vulnerability-Lookup

FKIE_CVE-2025-37949

Vulnerability from fkie_nvd - Published: 2025-05-20 16:15 - Updated: 2026-07-30 06:22

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: xenbus: Use kref to track req lifetime Marek reported seeing a NULL pointer fault in the xenbus_thread callstack: BUG: kernel NULL pointer dereference, address: 0000000000000000 RIP: e030:__wake_up_common+0x4c/0x180 Call Trace: <TASK> __wake_up_common_lock+0x82/0xd0 process_msg+0x18e/0x2f0 xenbus_thread+0x165/0x1c0 process_msg+0x18e is req->cb(req). req->cb is set to xs_wake_up(), a thin wrapper around wake_up(), or xenbus_dev_queue_reply(). It seems like it was xs_wake_up() in this case. It seems like req may have woken up the xs_wait_for_reply(), which kfree()ed the req. When xenbus_thread resumes, it faults on the zero-ed data. Linux Device Drivers 2nd edition states: "Normally, a wake_up call can cause an immediate reschedule to happen, meaning that other processes might run before wake_up returns." ... which would match the behaviour observed. Change to keeping two krefs on each request. One for the caller, and one for xenbus_thread. Each will kref_put() when finished, and the last will free it. This use of kref matches the description in Documentation/core-api/kref.rst

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0e94a246bb6d9538010b6c02d2b1d4717a97b2e5	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1f0304dfd9d217c2f8b04a9ef4b3258a66eedd27	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2466b0f66795c3c426cacc8998499f38031dbb59	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4d260a5558df4650eb87bc41b2c9ac2d6b2ba447	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8b02f85e84dc6f7c150cef40ddb69af5a25659e5	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8e9c8a0393b5f85f1820c565ab8105660f4e8f92	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/cbfaf46b88a4c01b64c4186cdccd766c19ae644c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f1bcac367bc95631afbb918348f30dec887d0e1b	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html	Third Party Advisory

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	6.15
linux	linux_kernel	6.15
linux	linux_kernel	6.15
linux	linux_kernel	6.15
linux	linux_kernel	6.15
debian	debian_linux	11.0

JSON

To clipboard

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxenbus: Use kref to track req lifetime\n\nMarek reported seeing a NULL pointer fault in the xenbus_thread\ncallstack:\nBUG: kernel NULL pointer dereference, address: 0000000000000000\nRIP: e030:__wake_up_common+0x4c/0x180\nCall Trace:\n \u003cTASK\u003e\n __wake_up_common_lock+0x82/0xd0\n process_msg+0x18e/0x2f0\n xenbus_thread+0x165/0x1c0\n\nprocess_msg+0x18e is req-\u003ecb(req).  req-\u003ecb is set to xs_wake_up(), a\nthin wrapper around wake_up(), or xenbus_dev_queue_reply().  It seems\nlike it was xs_wake_up() in this case.\n\nIt seems like req may have woken up the xs_wait_for_reply(), which\nkfree()ed the req.  When xenbus_thread resumes, it faults on the zero-ed\ndata.\n\nLinux Device Drivers 2nd edition states:\n\"Normally, a wake_up call can cause an immediate reschedule to happen,\nmeaning that other processes might run before wake_up returns.\"\n... which would match the behaviour observed.\n\nChange to keeping two krefs on each request.  One for the caller, and\none for xenbus_thread.  Each will kref_put() when finished, and the last\nwill free it.\n\nThis use of kref matches the description in\nDocumentation/core-api/kref.rst"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: xenbus: Usar kref para rastrear el tiempo de vida de req. Marek inform\u00f3 haber visto un fallo de puntero nulo en la pila de llamadas xenbus_thread: ERROR: desreferencia de puntero nulo del kernel, direcci\u00f3n: 0000000000000000 RIP: e030:__wake_up_common+0x4c/0x180 Rastreo de llamadas:  __wake_up_common_lock+0x82/0xd0 process_msg+0x18e/0x2f0 xenbus_thread+0x165/0x1c0 process_msg+0x18e es req-\u0026gt;cb(req). req-\u0026gt;cb est\u00e1 configurado como xs_wake_up(), una envoltura ligera alrededor de wake_up(), o xenbus_dev_queue_reply(). Parece que en este caso era xs_wake_up(). Parece que req pudo haber despertado xs_wait_for_reply(), que liber\u00f3 la solicitud. Cuando xenbus_thread se reanuda, falla en los datos con ceros. La segunda edici\u00f3n de los controladores de dispositivos de Linux indica: \u00abNormalmente, una llamada wake_up puede provocar una reprogramaci\u00f3n inmediata, lo que significa que otros procesos podr\u00edan ejecutarse antes de que wake_up regrese\u00bb. ... lo cual coincidir\u00eda con el comportamiento observado. Se recomienda mantener dos krefs en cada solicitud: uno para el que realiza la llamada y otro para xenbus_thread. Cada uno ejecutar\u00e1 kref_put() al finalizar, y el \u00faltimo lo liberar\u00e1. Este uso de kref coincide con la descripci\u00f3n en Documentation/core-api/kref.rst."
    }
  ],
  "id": "CVE-2025-37949",
  "lastModified": "2026-07-30T06:22:36.617",
  "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"
        },
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        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
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          "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"
      }
    ]
  },
  "published": "2025-05-20T16:15:32.920",
  "references": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
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        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2025-37949 (GCVE-0-2025-37949)

Vulnerability from cvelistv5 – Published: 2025-05-20 16:01 – Updated: 2026-08-05 11:58

Title

xenbus: Use kref to track req lifetime

Summary

Severity

7.8 (High)


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

Assigner

Linux mitre root

References

10 references

URL	Tags
https://git.kernel.org/stable/c/0e94a246bb6d95380…
https://git.kernel.org/stable/c/f1bcac367bc95631a…
https://git.kernel.org/stable/c/4d260a5558df4650e…
https://git.kernel.org/stable/c/8b02f85e84dc6f7c1…
https://git.kernel.org/stable/c/cbfaf46b88a4c01b6…
https://git.kernel.org/stable/c/8e9c8a0393b5f85f1…
https://git.kernel.org/stable/c/2466b0f66795c3c42…
https://git.kernel.org/stable/c/1f0304dfd9d217c2f…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: fd8aa9095a95c02dcc35540a263267c29b8fda9d , < 0e94a246bb6d9538010b6c02d2b1d4717a97b2e5 (git) Affected: fd8aa9095a95c02dcc35540a263267c29b8fda9d , < f1bcac367bc95631afbb918348f30dec887d0e1b (git) Affected: fd8aa9095a95c02dcc35540a263267c29b8fda9d , < 4d260a5558df4650eb87bc41b2c9ac2d6b2ba447 (git) Affected: fd8aa9095a95c02dcc35540a263267c29b8fda9d , < 8b02f85e84dc6f7c150cef40ddb69af5a25659e5 (git) Affected: fd8aa9095a95c02dcc35540a263267c29b8fda9d , < cbfaf46b88a4c01b64c4186cdccd766c19ae644c (git) Affected: fd8aa9095a95c02dcc35540a263267c29b8fda9d , < 8e9c8a0393b5f85f1820c565ab8105660f4e8f92 (git) Affected: fd8aa9095a95c02dcc35540a263267c29b8fda9d , < 2466b0f66795c3c426cacc8998499f38031dbb59 (git) Affected: fd8aa9095a95c02dcc35540a263267c29b8fda9d , < 1f0304dfd9d217c2f8b04a9ef4b3258a66eedd27 (git)
Linux	Linux	Affected: 4.11 Unaffected: 0 , < 4.11 (semver) Unaffected: 5.4.294 , ≤ 5.4.* (semver) Unaffected: 5.10.238 , ≤ 5.10.* (semver) Unaffected: 5.15.183 , ≤ 5.15.* (semver) Unaffected: 6.1.139 , ≤ 6.1.* (semver) Unaffected: 6.6.91 , ≤ 6.6.* (semver) Unaffected: 6.12.29 , ≤ 6.12.* (semver) Unaffected: 6.14.7 , ≤ 6.14.* (semver) Unaffected: 6.15 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T19:57:40.135Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/xen/xenbus/xenbus.h",
            "drivers/xen/xenbus/xenbus_comms.c",
            "drivers/xen/xenbus/xenbus_dev_frontend.c",
            "drivers/xen/xenbus/xenbus_xs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0e94a246bb6d9538010b6c02d2b1d4717a97b2e5",
              "status": "affected",
              "version": "fd8aa9095a95c02dcc35540a263267c29b8fda9d",
              "versionType": "git"
            },
            {
              "lessThan": "f1bcac367bc95631afbb918348f30dec887d0e1b",
              "status": "affected",
              "version": "fd8aa9095a95c02dcc35540a263267c29b8fda9d",
              "versionType": "git"
            },
            {
              "lessThan": "4d260a5558df4650eb87bc41b2c9ac2d6b2ba447",
              "status": "affected",
              "version": "fd8aa9095a95c02dcc35540a263267c29b8fda9d",
              "versionType": "git"
            },
            {
              "lessThan": "8b02f85e84dc6f7c150cef40ddb69af5a25659e5",
              "status": "affected",
              "version": "fd8aa9095a95c02dcc35540a263267c29b8fda9d",
              "versionType": "git"
            },
            {
              "lessThan": "cbfaf46b88a4c01b64c4186cdccd766c19ae644c",
              "status": "affected",
              "version": "fd8aa9095a95c02dcc35540a263267c29b8fda9d",
              "versionType": "git"
            },
            {
              "lessThan": "8e9c8a0393b5f85f1820c565ab8105660f4e8f92",
              "status": "affected",
              "version": "fd8aa9095a95c02dcc35540a263267c29b8fda9d",
              "versionType": "git"
            },
            {
              "lessThan": "2466b0f66795c3c426cacc8998499f38031dbb59",
              "status": "affected",
              "version": "fd8aa9095a95c02dcc35540a263267c29b8fda9d",
              "versionType": "git"
            },
            {
              "lessThan": "1f0304dfd9d217c2f8b04a9ef4b3258a66eedd27",
              "status": "affected",
              "version": "fd8aa9095a95c02dcc35540a263267c29b8fda9d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/xen/xenbus/xenbus.h",
            "drivers/xen/xenbus/xenbus_comms.c",
            "drivers/xen/xenbus/xenbus_dev_frontend.c",
            "drivers/xen/xenbus/xenbus_xs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.11"
            },
            {
              "lessThan": "4.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.294",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.238",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.139",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.29",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.294",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.238",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.183",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.139",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.91",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.29",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14.7",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxenbus: Use kref to track req lifetime\n\nMarek reported seeing a NULL pointer fault in the xenbus_thread\ncallstack:\nBUG: kernel NULL pointer dereference, address: 0000000000000000\nRIP: e030:__wake_up_common+0x4c/0x180\nCall Trace:\n \u003cTASK\u003e\n __wake_up_common_lock+0x82/0xd0\n process_msg+0x18e/0x2f0\n xenbus_thread+0x165/0x1c0\n\nprocess_msg+0x18e is req-\u003ecb(req).  req-\u003ecb is set to xs_wake_up(), a\nthin wrapper around wake_up(), or xenbus_dev_queue_reply().  It seems\nlike it was xs_wake_up() in this case.\n\nIt seems like req may have woken up the xs_wait_for_reply(), which\nkfree()ed the req.  When xenbus_thread resumes, it faults on the zero-ed\ndata.\n\nLinux Device Drivers 2nd edition states:\n\"Normally, a wake_up call can cause an immediate reschedule to happen,\nmeaning that other processes might run before wake_up returns.\"\n... which would match the behaviour observed.\n\nChange to keeping two krefs on each request.  One for the caller, and\none for xenbus_thread.  Each will kref_put() when finished, and the last\nwill free it.\n\nThis use of kref matches the description in\nDocumentation/core-api/kref.rst"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The race is between the in-guest `xenbus_thread` and a local task blocked in `read_reply()`; it is driven by local writes to the `/dev/xen/xenbus` (or `/proc/xen/xenbus`) character device or by local sysfs/kernel-initiated xenstore requests. No network protocol handling is involved, so this requires local access to the Xen guest or dom0.\nAC:L - The attacker controls both sides of the race \u2014 their own thread is the waiter that performs the `kfree()`, and they issue the requests that cause `xenbus_thread` to call `wake_up()` \u2014 so they can retry unbounded, pin the racing threads to separate CPUs, and add scheduler load to widen the window. The bug is known to fire spontaneously during ordinary operation, confirming no attacker-uncontrollable precondition.\nPR:L - There is no `capable()` or credential check anywhere on the vulnerable path \u2014 unlike `xenbus_dev_backend.c` which gates on `CAP_SYS_ADMIN`, `xen_xenbus_fops` has none, so any user granted the xenbus device node can drive `XS_WATCH`/`XS_UNWATCH` into `xs_talkv()`; the world-readable `/sys/hypervisor/uuid` (mode 0444) also reaches `xenbus_read()` \u2192 `xs_talkv()`. A basic unprivileged local account suffices in realistic Xen deployments.\nUI:N - The attacker triggers the race entirely from their own thread pair by issuing xenstore requests and waiting for replies; no victim action, mount, or file open is required.\nS:U - The freed `xb_req_data` and the resulting corruption both live in the same kernel\u0027s slab, so the impact stays within the compromised guest\u0027s (or dom0\u0027s) security authority. No hypervisor, IOMMU, or VM boundary is crossed by the memory corruption itself.\nC:H - The use-after-free lets the attacker reallocate the freed `xb_req_data` with sprayed content that `__wake_up_common` then reads as a `wait_queue_entry` list, and the corrupted-object primitive is readily leveraged into arbitrary kernel memory disclosure. The object comes from a generic `kmalloc-128`/`kmalloc-192` cache shared with attacker-controllable allocations.\nI:H - `__wake_up_common` performs an indirect call `curr-\u003efunc(curr, ...)` through a pointer read from the freed object, and `spin_unlock_irqrestore()` writes into the freed slot after reallocation \u2014 giving both control-flow hijack and a targeted write primitive, i.e. full kernel privilege escalation potential.\nA:H - The reported real-world symptom is a kernel NULL pointer dereference and oops in `__wake_up_common` from `xenbus_thread`, killing the xenstore transport thread and panicking the kernel. Any unsuccessful exploitation attempt likewise crashes the guest or dom0."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:58:34.906Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0e94a246bb6d9538010b6c02d2b1d4717a97b2e5"
        },
        {
          "url": "https://git.kernel.org/stable/c/f1bcac367bc95631afbb918348f30dec887d0e1b"
        },
        {
          "url": "https://git.kernel.org/stable/c/4d260a5558df4650eb87bc41b2c9ac2d6b2ba447"
        },
        {
          "url": "https://git.kernel.org/stable/c/8b02f85e84dc6f7c150cef40ddb69af5a25659e5"
        },
        {
          "url": "https://git.kernel.org/stable/c/cbfaf46b88a4c01b64c4186cdccd766c19ae644c"
        },
        {
          "url": "https://git.kernel.org/stable/c/8e9c8a0393b5f85f1820c565ab8105660f4e8f92"
        },
        {
          "url": "https://git.kernel.org/stable/c/2466b0f66795c3c426cacc8998499f38031dbb59"
        },
        {
          "url": "https://git.kernel.org/stable/c/1f0304dfd9d217c2f8b04a9ef4b3258a66eedd27"
        }
      ],
      "title": "xenbus: Use kref to track req lifetime",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-37949",
    "datePublished": "2025-05-20T16:01:45.242Z",
    "dateReserved": "2025-04-16T04:51:23.972Z",
    "dateUpdated": "2026-08-05T11:58:34.906Z",
    "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.

Detection rules are retrieved from Rulezet.

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.

Related by attack behaviour

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.