CVE Watch15 oct 2026

CVE-2026-46234

In the Linux kernel, the following vulnerability has been resolved: vsock: fix buffer size clamping order In vsock_update_buffer_size(), t

CVSS

7.8

Alto

EPSS

0.1%

KEV

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Exploit Today

0-100

Publicado: 28 may 2026 · Última mod.: 15 oct 2026 · CWE-787

EPSS · 30d

0.1%EPSS · 30 días0.2%

2026-09-282026-10-25

Descripción técnica

In the Linux kernel, the following vulnerability has been resolved: vsock: fix buffer size clamping order In vsock_update_buffer_size(), the buffer size was being clamped to the maximum first, and then to the minimum. If a user sets a minimum buffer size larger than the maximum, the minimum check overrides the maximum check, inverting the constraint. This breaks the intended socket memory boundaries by allowing the vsk->buffer_size to grow beyond the configured vsk->buffer_max_size. Fix this by checking the minimum first, and then the maximum. This ensures the buffer size never exceeds the buffer_max_size.

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