CVE-2023-53624
Gravedad CVSS v3.1:
MEDIA
Tipo:
CWE-190
Desbordamiento o ajuste de enteros
Fecha de publicación:
07/10/2025
Última modificación:
05/02/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
net/sched: sch_fq: fix integer overflow of "credit"<br />
<br />
if sch_fq is configured with "initial quantum" having values greater than<br />
INT_MAX, the first assignment of "credit" does signed integer overflow to<br />
a very negative value.<br />
In this situation, the syzkaller script provided by Cristoph triggers the<br />
CPU soft-lockup warning even with few sockets. It&#39;s not an infinite loop,<br />
but "credit" wasn&#39;t probably meant to be minus 2Gb for each new flow.<br />
Capping "initial quantum" to INT_MAX proved to fix the issue.<br />
<br />
v2: validation of "initial quantum" is done in fq_policy, instead of open<br />
coding in fq_change() _ suggested by Jakub Kicinski
Impacto
Puntuación base 3.x
5.50
Gravedad 3.x
MEDIA
Productos y versiones vulnerables
| CPE | Desde | Hasta |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.12 (incluyendo) | 5.10.180 (excluyendo) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.11 (incluyendo) | 5.15.111 (excluyendo) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.16 (incluyendo) | 6.1.28 (excluyendo) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.2 (incluyendo) | 6.2.15 (excluyendo) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.3 (incluyendo) | 6.3.2 (excluyendo) |
Para consultar la lista completa de nombres de CPE con productos y versiones, ver esta página
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/2322462d6f9ad4874f4e3c63df3b5cc00cb1acbd
- https://git.kernel.org/stable/c/4b8a05e3801661a0438fcd0cdef181030d966a5a
- https://git.kernel.org/stable/c/4fbefeab88c6e79753a25099d455d3d59d2946b4
- https://git.kernel.org/stable/c/7041101ff6c3073fd8f2e99920f535b111c929cb
- https://git.kernel.org/stable/c/85f24cb2f10b2b0f2882e5786a09b4790bb3a0ad
- https://git.kernel.org/stable/c/d0b43125ec892aeb1b03e5df5aab595097da225a



