FKIE_CVE-2023-52847

Vulnerability from fkie_nvd - Published: 2024-05-21 16:15 - Updated: 2025-03-04 16:56
Severity ?
7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: media: bttv: fix use after free error due to btv->timeout timer There may be some a race condition between timer function bttv_irq_timeout and bttv_remove. The timer is setup in probe and there is no timer_delete operation in remove function. When it hit kfree btv, the function might still be invoked, which will cause use after free bug. This bug is found by static analysis, it may be false positive. Fix it by adding del_timer_sync invoking to the remove function. cpu0 cpu1 bttv_probe ->timer_setup ->bttv_set_dma ->mod_timer; bttv_remove ->kfree(btv); ->bttv_irq_timeout ->USE btv
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1871014d6ef4812ad11ef7d838d73ce09d632267Mailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/20568d06f6069cb835e05eed432edf962645d226Mailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2f3d9198cdae1cb079ec8652f4defacd481eab2bMailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/51c94256a83fe4e17406c66ff3e1ad7d242d8574Mailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/847599fffa528b2cdec4e21b6bf7586dad982132Mailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b35fdade92c5058a5e727e233fe263b828de2c9aMailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bbc3b8dd2cb7817e703f112d988e4f4728f0f2a9Mailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bd5b50b329e850d467e7bcc07b2b6bde3752fbdaMailing List, Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1871014d6ef4812ad11ef7d838d73ce09d632267Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/20568d06f6069cb835e05eed432edf962645d226Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2f3d9198cdae1cb079ec8652f4defacd481eab2bMailing List, Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/51c94256a83fe4e17406c66ff3e1ad7d242d8574Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/847599fffa528b2cdec4e21b6bf7586dad982132Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b35fdade92c5058a5e727e233fe263b828de2c9aMailing List, Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/bbc3b8dd2cb7817e703f112d988e4f4728f0f2a9Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/bd5b50b329e850d467e7bcc07b2b6bde3752fbdaMailing List, Patch
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 *
To clipboard 

{
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      "nodes": [
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: bttv: fix use after free error due to btv-\u003etimeout timer\n\nThere may be some a race condition between timer function\nbttv_irq_timeout and bttv_remove. The timer is setup in\nprobe and there is no timer_delete operation in remove\nfunction. When it hit kfree btv, the function might still be\ninvoked, which will cause use after free bug.\n\nThis bug is found by static analysis, it may be false positive.\n\nFix it by adding del_timer_sync invoking to the remove function.\n\ncpu0                cpu1\n                  bttv_probe\n                    -\u003etimer_setup\n                      -\u003ebttv_set_dma\n                        -\u003emod_timer;\nbttv_remove\n  -\u003ekfree(btv);\n                  -\u003ebttv_irq_timeout\n                    -\u003eUSE btv"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: medio: bttv: correcci\u00f3n de uso despu\u00e9s de error gratuito debido a btv-\u0026gt;timeout timer. Puede haber alguna condici\u00f3n de ejecuci\u00f3n entre la funci\u00f3n del temporizador bttv_irq_timeout y bttv_remove. El temporizador est\u00e1 configurado en la sonda y no hay ninguna operaci\u00f3n timer_delete en la funci\u00f3n de eliminaci\u00f3n. Cuando llega a kfree btv, es posible que la funci\u00f3n a\u00fan se invoque, lo que provocar\u00e1 un error de use after free. Este error se encuentra mediante an\u00e1lisis est\u00e1tico y puede ser un falso positivo. Solucionelo agregando del_timer_sync invocando a la funci\u00f3n de eliminaci\u00f3n. cpu0 cpu1 bttv_probe -\u0026gt;timer_setup -\u0026gt;bttv_set_dma -\u0026gt;mod_timer; bttv_remove -\u0026gt;kfree(btv); -\u0026gt;bttv_irq_timeout -\u0026gt;USE btv"
    }
  ],
  "id": "CVE-2023-52847",
  "lastModified": "2025-03-04T16:56:08.263",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-05-21T16:15:21.873",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-362"
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          "lang": "en",
          "value": "CWE-416"
        }
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      "source": "nvd@nist.gov",
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}


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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.
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  • 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.