fkie_cve-2024-35887
Vulnerability from fkie_nvd
Published
2024-05-19 09:15
Modified
2024-12-31 18:48
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ax25: fix use-after-free bugs caused by ax25_ds_del_timer When the ax25 device is detaching, the ax25_dev_device_down() calls ax25_ds_del_timer() to cleanup the slave_timer. When the timer handler is running, the ax25_ds_del_timer() that calls del_timer() in it will return directly. As a result, the use-after-free bugs could happen, one of the scenarios is shown below: (Thread 1) | (Thread 2) | ax25_ds_timeout() ax25_dev_device_down() | ax25_ds_del_timer() | del_timer() | ax25_dev_put() //FREE | | ax25_dev-> //USE In order to mitigate bugs, when the device is detaching, use timer_shutdown_sync() to stop the timer.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/74204bf9050f7627aead9875fe4e07ba125cb19bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c6a368f9c7af4c14b14d390c2543af8001c9bdb9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fd819ad3ecf6f3c232a06b27423ce9ed8c20da89Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/74204bf9050f7627aead9875fe4e07ba125cb19bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c6a368f9c7af4c14b14d390c2543af8001c9bdb9Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/fd819ad3ecf6f3c232a06b27423ce9ed8c20da89Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.9
linux linux_kernel 6.9


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "95B2CDA7-A612-4844-B30F-50D25134CB5F",
                     versionEndExcluding: "6.6.26",
                     versionStartIncluding: "2.6.12",
                     vulnerable: true,
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                     versionEndExcluding: "6.8.5",
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   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In the Linux kernel, the following vulnerability has been resolved:\n\nax25: fix use-after-free bugs caused by ax25_ds_del_timer\n\nWhen the ax25 device is detaching, the ax25_dev_device_down()\ncalls ax25_ds_del_timer() to cleanup the slave_timer. When\nthe timer handler is running, the ax25_ds_del_timer() that\ncalls del_timer() in it will return directly. As a result,\nthe use-after-free bugs could happen, one of the scenarios\nis shown below:\n\n      (Thread 1)          |      (Thread 2)\n                          | ax25_ds_timeout()\nax25_dev_device_down()    |\n  ax25_ds_del_timer()     |\n    del_timer()           |\n  ax25_dev_put() //FREE   |\n                          |  ax25_dev-> //USE\n\nIn order to mitigate bugs, when the device is detaching, use\ntimer_shutdown_sync() to stop the timer.",
      },
      {
         lang: "es",
         value: " En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ax25: corrige errores de use after free causados por ax25_ds_del_timer Cuando el dispositivo ax25 se está desconectando, ax25_dev_device_down() llama a ax25_ds_del_timer() para limpiar el Slave_timer. Cuando el controlador del temporizador se está ejecutando, el ax25_ds_del_timer() que llama a del_timer() regresará directamente. Como resultado, podrían ocurrir errores de uso después de la liberación, uno de los escenarios se muestra a continuación: (Subproceso 1) | (Hilo 2) | ax25_ds_timeout() ax25_dev_device_down() | ax25_ds_del_timer() | del_timer() | ax25_dev_put() //GRATIS | | ax25_dev-> //USE Para mitigar errores, cuando el dispositivo se esté desconectando, use timer_shutdown_sync() para detener el temporizador.",
      },
   ],
   id: "CVE-2024-35887",
   lastModified: "2024-12-31T18:48:10.650",
   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: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2024-05-19T09:15:09.837",
   references: [
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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   sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
   vulnStatus: "Analyzed",
   weaknesses: [
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         description: [
            {
               lang: "en",
               value: "CWE-416",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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