FKIE_CVE-2023-52522

Vulnerability from fkie_nvd - Published: 2024-03-02 22:15 - Updated: 2025-09-16 16:25
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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: net: fix possible store tearing in neigh_periodic_work() While looking at a related syzbot report involving neigh_periodic_work(), I found that I forgot to add an annotation when deleting an RCU protected item from a list. Readers use rcu_deference(*np), we need to use either rcu_assign_pointer() or WRITE_ONCE() on writer side to prevent store tearing. I use rcu_assign_pointer() to have lockdep support, this was the choice made in neigh_flush_dev().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/147d89ee41434b97043c2dcb17a97dc151859baaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/25563b581ba3a1f263a00e8c9a97f5e7363be6fdPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2ea52a2fb8e87067e26bbab4efb8872639240eb0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/95eabb075a5902f4c0834ab1fb12dc35730c05afPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a75152d233370362eebedb2643592e7c883cc9fcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f82aac8162871e87027692b36af335a2375d4580Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/147d89ee41434b97043c2dcb17a97dc151859baaPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/25563b581ba3a1f263a00e8c9a97f5e7363be6fdPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2ea52a2fb8e87067e26bbab4efb8872639240eb0Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/95eabb075a5902f4c0834ab1fb12dc35730c05afPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a75152d233370362eebedb2643592e7c883cc9fcPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f82aac8162871e87027692b36af335a2375d4580Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.6
linux linux_kernel 6.6
linux linux_kernel 6.6
linux linux_kernel 6.6
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix possible store tearing in neigh_periodic_work()\n\nWhile looking at a related syzbot report involving neigh_periodic_work(),\nI found that I forgot to add an annotation when deleting an\nRCU protected item from a list.\n\nReaders use rcu_deference(*np), we need to use either\nrcu_assign_pointer() or WRITE_ONCE() on writer side\nto prevent store tearing.\n\nI use rcu_assign_pointer() to have lockdep support,\nthis was the choice made in neigh_flush_dev()."
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      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: net: soluciona el posible desgarro del almac\u00e9n en neigh_periodic_work() Mientras miraba un informe de syzbot relacionado que involucraba a neigh_periodic_work(), descubr\u00ed que olvid\u00e9 agregar una anotaci\u00f3n al eliminar un elemento protegido por RCU de una lista. Los lectores usan rcu_deference(*np), necesitamos usar rcu_assign_pointer() o WRITE_ONCE() en el lado del escritor para evitar que la tienda se rompa. Utilizo rcu_assign_pointer() para tener soporte lockdep, esta fue la elecci\u00f3n hecha en neigh_flush_dev()."
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  "id": "CVE-2023-52522",
  "lastModified": "2025-09-16T16:25:47.997",
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          "confidentialityImpact": "NONE",
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  • 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.
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