net: do not pass flow_id to set_rps_cpu()_CVE-2026-43208

9.8 / 10

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

In the Linux kernel, the following vulnerability has been resolved:

net: do not pass flow_id to set_rps_cpu()

Blamed commit made the assumption that the RPS table for each receive
queue would have the same size, and that it would not change.

Compute flow_id in set_rps_cpu(), do not assume we can use the value
computed by get_rps_cpu(). Otherwise we risk out-of-bound access
and/or crashes.

AI Analysis

Out-of-bound access and/or crashes due to incorrect assumption about RPS table size

Basic Information

ID CVE-2026-43208

Source Linux

Published May 6, 2026 at 11:28

Modified May 8, 2026 at 12:41

Affected Product

Vendor Linux

Product Linux

Version 48aa30443e52c9666d5cd5e67532e475f212337e

Affected Versions Linux Linux 48aa30443e52c9666d5cd5e67532e475f212337e
Linux Linux 48aa30443e52c9666d5cd5e67532e475f212337e
Linux Linux 48aa30443e52c9666d5cd5e67532e475f212337e
Linux Linux 6.18

AI Assessment

AI Score 9.8 / 10

AI Severity Critical

Vendor The Linux Foundation

Product Linux Kernel

Version 6.18, 48aa30443e52c9666d5cd5e67532e475f212337e

References

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    "published": "2026-05-06T11:28:12.292Z",
    "modified": "2026-05-08T12:41:16.509Z",
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    "title": "net: do not pass flow_id to set_rps_cpu()",
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