CVE-2026-46234 - vsock: fix buffer size clamping order

CVE-2026-46234 - vsock: fix buffer size clamping order

https://cvefeed.io/rssfeed/latest.atom / Thu, 05/28/2026 - 14:25
CVE ID :CVE-2026-46234
Published : May 28, 2026, 10:16 a.m. | 44 minutes ago
Description :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.
Severity: 0.0 | NA
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