FKIE_CVE-2024-35962

Vulnerability from fkie_nvd - Published: 2024-05-20 10:15 - Updated: 2025-12-17 03:37
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: netfilter: complete validation of user input In my recent commit, I missed that do_replace() handlers use copy_from_sockptr() (which I fixed), followed by unsafe copy_from_sockptr_offset() calls. In all functions, we can perform the @optlen validation before even calling xt_alloc_table_info() with the following check: if ((u64)optlen < (u64)tmp.size + sizeof(tmp)) return -EINVAL;
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/562b7245131f6e9f1d280c8b5a8750f03edfc05cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/65acf6e0501ac8880a4f73980d01b5d27648b956Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/89242d9584c342cb83311b598d9e6b82572eadf8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/97dab36e57c64106e1c8ebd66cbf0d2d1e52d6b7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c760089aa98289b4b88a7ff5a62dd92845adf223Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cf4bc359b76144a3dd55d7c09464ef4c5f2b2b05Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/562b7245131f6e9f1d280c8b5a8750f03edfc05cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/65acf6e0501ac8880a4f73980d01b5d27648b956Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/89242d9584c342cb83311b598d9e6b82572eadf8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/97dab36e57c64106e1c8ebd66cbf0d2d1e52d6b7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c760089aa98289b4b88a7ff5a62dd92845adf223Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/cf4bc359b76144a3dd55d7c09464ef4c5f2b2b05Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlThird Party Advisory, Mailing List
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.10.215
linux linux_kernel 6.9
debian debian_linux 10.0
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: complete validation of user input\n\nIn my recent commit, I missed that do_replace() handlers\nuse copy_from_sockptr() (which I fixed), followed\nby unsafe copy_from_sockptr_offset() calls.\n\nIn all functions, we can perform the @optlen validation\nbefore even calling xt_alloc_table_info() with the following\ncheck:\n\nif ((u64)optlen \u003c (u64)tmp.size + sizeof(tmp))\n        return -EINVAL;"
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      "value": " En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: netfilter: validaci\u00f3n completa de la entrada del usuario En mi confirmaci\u00f3n reciente, omit\u00ed que los controladores do_replace() usan copy_from_sockptr() (que arregl\u00e9), seguido de llamadas inseguras copy_from_sockptr_offset(). En todas las funciones, podemos realizar la validaci\u00f3n @optlen incluso antes de llamar a xt_alloc_table_info() con la siguiente comprobaci\u00f3n: if ((u64)optlen \u0026lt; (u64)tmp.size + sizeof(tmp)) return -EINVAL;"
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  "id": "CVE-2024-35962",
  "lastModified": "2025-12-17T03:37:16.260",
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          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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        "impactScore": 3.6,
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  "published": "2024-05-20T10:15:11.327",
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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