CVE-2026-46234
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
41/100
Published: 2026-05-28
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Low Complexity
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
High
I:
High
A:
High
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.
Weakness Classification (1)
Affected Software (10)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 < f6ec135941d2c1c2dbb87b5ce1783f4f6ac6ccca |
| Linux | Linux | b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 < caf11dfea5233a69298a1c448bbf8d1639c80536 |
| Linux | Linux | b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 < 01ef69785dc3162f588a361ab770b1e312800188 |
| Linux | Linux | b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 < a998a7e250bf976539e05a00ec64a81292afecaa |
| Linux | Linux | b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 < 310da27932dd0afe7ce7456dfe1f0814c3301f41 |
| Linux | Linux | b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 < 2602f7bb5818e92315feeaeb71d8ce4d5c9ab160 |
| Linux | Linux | b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 < 0b68881501460c3761f196469e1e503218c5e536 |
| Linux | Linux | b9f2b0ffde0c9b666b2b1672eb468b8f805a9b97 < d114bfdc9b76bf93b881e195b7ec957c14227bab |
| Linux | Linux | 5.5 |
| linux | linux_kernel | 5.5 – 5.10.258 |