FKIE_CVE-2023-52976

Vulnerability from fkie_nvd - Published: 2025-03-27 17:15 - Updated: 2025-10-01 18:15
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: efi: fix potential NULL deref in efi_mem_reserve_persistent When iterating on a linked list, a result of memremap is dereferenced without checking it for NULL. This patch adds a check that falls back on allocating a new page in case memremap doesn't succeed. Found by Linux Verification Center (linuxtesting.org) with SVACE. [ardb: return -ENOMEM instead of breaking out of the loop]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/87d4ff18738fd71e7e3c10827c80257da6283697Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/966d47e1f27c45507c5df82b2a2157e5a4fd3909Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a2e6a9ff89f13666a1c3ff7195612ab949ea9afcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d92a25627bcdf264183670da73c9a60c0bac327ePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2
To clipboard 

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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nefi: fix potential NULL deref in efi_mem_reserve_persistent\n\nWhen iterating on a linked list, a result of memremap is dereferenced\nwithout checking it for NULL.\n\nThis patch adds a check that falls back on allocating a new page in\ncase memremap doesn\u0027t succeed.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.\n\n[ardb: return -ENOMEM instead of breaking out of the loop]"
    },
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      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: efi: se corrige una posible desreferenciaci\u00f3n NULL en efi_mem_reserve_persistent. Al iterar en una lista enlazada, se desreferencia un resultado de memremap sin comprobar si es NULL. Este parche a\u00f1ade una comprobaci\u00f3n que recurre a la asignaci\u00f3n de una nueva p\u00e1gina en caso de que memremap no tenga \u00e9xito. Encontrado por el Centro de Verificaci\u00f3n de Linux (linuxtesting.org) con SVACE. [ardb: devuelve -ENOMEM en lugar de salir del bucle]"
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  "id": "CVE-2023-52976",
  "lastModified": "2025-10-01T18:15:34.127",
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  • 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.
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