FKIE_CVE-2022-48637

Vulnerability from fkie_nvd - Published: 2024-04-28 13:15 - Updated: 2025-03-21 18:13
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: bnxt: prevent skb UAF after handing over to PTP worker When reading the timestamp is required bnxt_tx_int() hands over the ownership of the completed skb to the PTP worker. The skb should not be used afterwards, as the worker may run before the rest of our code and free the skb, leading to a use-after-free. Since dev_kfree_skb_any() accepts NULL make the loss of ownership more obvious and set skb to NULL.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/08483e4c0c83b221b8891434a04cec405dee94a6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/32afa1f23e42cc635ccf4c39f24514d03d1e8338Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c31f26c8f69f776759cbbdfb38e40ea91aa0dd65Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/08483e4c0c83b221b8891434a04cec405dee94a6Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/32afa1f23e42cc635ccf4c39f24514d03d1e8338Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c31f26c8f69f776759cbbdfb38e40ea91aa0dd65Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.0
linux linux_kernel 6.0
linux linux_kernel 6.0
linux linux_kernel 6.0
linux linux_kernel 6.0
linux linux_kernel 6.0
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt: prevent skb UAF after handing over to PTP worker\n\nWhen reading the timestamp is required bnxt_tx_int() hands\nover the ownership of the completed skb to the PTP worker.\nThe skb should not be used afterwards, as the worker may\nrun before the rest of our code and free the skb, leading\nto a use-after-free.\n\nSince dev_kfree_skb_any() accepts NULL make the loss of\nownership more obvious and set skb to NULL."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bnxt: impide que skb UAF se entregue al trabajador de PTP. Cuando se requiere leer la marca de tiempo, bnxt_tx_int() entrega la propiedad del skb completado al trabajador de PTP. El skb no debe usarse despu\u00e9s, ya que el trabajador puede ejecutarse antes que el resto de nuestro c\u00f3digo y liberar el skb, lo que lleva a un use-after-free. Dado que dev_kfree_skb_any() acepta NULL, la p\u00e9rdida de propiedad es m\u00e1s obvia y establece skb en NULL."
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  "id": "CVE-2022-48637",
  "lastModified": "2025-03-21T18:13:48.400",
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          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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