FKIE_CVE-2025-37927

Vulnerability from fkie_nvd - Published: 2025-05-20 16:15 - Updated: 2025-11-10 20:33
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: iommu/amd: Fix potential buffer overflow in parse_ivrs_acpihid There is a string parsing logic error which can lead to an overflow of hid or uid buffers. Comparing ACPIID_LEN against a total string length doesn't take into account the lengths of individual hid and uid buffers so the check is insufficient in some cases. For example if the length of hid string is 4 and the length of the uid string is 260, the length of str will be equal to ACPIID_LEN + 1 but uid string will overflow uid buffer which size is 256. The same applies to the hid string with length 13 and uid string with length 250. Check the length of hid and uid strings separately to prevent buffer overflow. Found by Linux Verification Center (linuxtesting.org) with SVACE.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/10d901a95f8e766e5aa0bb9a983fb41271f64718Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/13d67528e1ae4486e9ab24b70122fab104c73c29Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2b65060c84ee4d8dc64fae6d2728b528e9e832e1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/466d9da267079a8d3b69fa72dfa3a732e1f6dbb5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8dee308e4c01dea48fc104d37f92d5b58c50b96cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a65ebfed65fa62797ec1f5f1dcf7adb157a2de1ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c3f37faa71f5d26dd2144b3f2b14525ec8f5e41fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c8bdfc0297965bb13fa439d36ca9c4f7c8447f0fPatch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/08/msg00010.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlMailing List, Third Party Advisory
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 6.15
linux linux_kernel 6.15
linux linux_kernel 6.15
linux linux_kernel 6.15
debian debian_linux 11.0
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/amd: Fix potential buffer overflow in parse_ivrs_acpihid\n\nThere is a string parsing logic error which can lead to an overflow of hid\nor uid buffers. Comparing ACPIID_LEN against a total string length doesn\u0027t\ntake into account the lengths of individual hid and uid buffers so the\ncheck is insufficient in some cases. For example if the length of hid\nstring is 4 and the length of the uid string is 260, the length of str\nwill be equal to ACPIID_LEN + 1 but uid string will overflow uid buffer\nwhich size is 256.\n\nThe same applies to the hid string with length 13 and uid string with\nlength 250.\n\nCheck the length of hid and uid strings separately to prevent\nbuffer overflow.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommu/amd: Arreglar desbordamiento de b\u00fafer potencial en parse_ivrs_acpihid Hay un error de l\u00f3gica de an\u00e1lisis de cadenas que puede provocar un desbordamiento de los b\u00faferes hid o uid. La comparaci\u00f3n de ACPIID_LEN con la longitud total de una cadena no tiene en cuenta las longitudes de los b\u00faferes hid y uid individuales, por lo que la comprobaci\u00f3n es insuficiente en algunos casos. Por ejemplo, si la longitud de la cadena hid es 4 y la longitud de la cadena uid es 260, la longitud de str ser\u00e1 igual a ACPIID_LEN + 1, pero la cadena uid desbordar\u00e1 el b\u00fafer uid, cuyo tama\u00f1o es 256. Lo mismo se aplica a la cadena hid con una longitud de 13 y a la cadena uid con una longitud de 250. Compruebe la longitud de las cadenas hid y uid por separado para evitar el desbordamiento del b\u00fafer. Encontrado por el Centro de verificaci\u00f3n de Linux (linuxtesting.org) con SVACE."
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  "id": "CVE-2025-37927",
  "lastModified": "2025-11-10T20:33:13.267",
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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