FKIE_CVE-2022-49957

Vulnerability from fkie_nvd - Published: 2025-06-18 11:15 - Updated: 2025-11-14 18:10
Severity ?
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: kcm: fix strp_init() order and cleanup strp_init() is called just a few lines above this csk->sk_user_data check, it also initializes strp->work etc., therefore, it is unnecessary to call strp_done() to cancel the freshly initialized work. And if sk_user_data is already used by KCM, psock->strp should not be touched, particularly strp->work state, so we need to move strp_init() after the csk->sk_user_data check. This also makes a lockdep warning reported by syzbot go away.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0946ff31d1a8778787bf6708beb20f38715267ccPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1b6666964ca1de93a7bf06e122bcf3616dbd33a9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/473f394953216614087f4179e55cdf0cf616a13bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/55fb8c3baa8071c5d533a9ad48624e44e2a04ef5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8fc29ff3910f3af08a7c40a75d436b5720efe2bfPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a8a0c321319ad64a5427d6172cd9c23b4d6ca1e8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f865976baa85915c7672f351b74d5974b93215f6Patch
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 *
linux linux_kernel 4.15
linux linux_kernel 6.0
linux linux_kernel 6.0
linux linux_kernel 6.0
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkcm: fix strp_init() order and cleanup\n\nstrp_init() is called just a few lines above this csk-\u003esk_user_data\ncheck, it also initializes strp-\u003ework etc., therefore, it is\nunnecessary to call strp_done() to cancel the freshly initialized\nwork.\n\nAnd if sk_user_data is already used by KCM, psock-\u003estrp should not be\ntouched, particularly strp-\u003ework state, so we need to move strp_init()\nafter the csk-\u003esk_user_data check.\n\nThis also makes a lockdep warning reported by syzbot go away."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: kcm: correcci\u00f3n del orden y la limpieza de strp_init(). strp_init() se llama solo unas l\u00edneas por encima de la comprobaci\u00f3n csk-\u0026gt;sk_user_data; tambi\u00e9n inicializa strp-\u0026gt;work, etc., por lo que no es necesario llamar a strp_done() para cancelar el trabajo reci\u00e9n inicializado. Si KCM ya utiliza sk_user_data, no se debe modificar psock-\u0026gt;strp, en particular el estado strp-\u0026gt;work, por lo que es necesario mover strp_init() despu\u00e9s de la comprobaci\u00f3n csk-\u0026gt;sk_user_data. Esto tambi\u00e9n elimina la advertencia de lockdep reportada por syzbot."
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  "id": "CVE-2022-49957",
  "lastModified": "2025-11-14T18:10:23.750",
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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"
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        "impactScore": 3.6,
        "source": "nvd@nist.gov",
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  "published": "2025-06-18T11:15:22.897",
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