CVE-2026-43208

net: do not pass flow_id to set_rps_cpu()

State: Published
Severity: 9.8 Critical
Published: May 6, 2026
Updated: Aug 5, 2026
Reserved: May 1, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	48aa30443e52c9666d5cd5e67532e475f212337e to before 5455a232edea6b946b99449f15ca771a8874a5a6Affected 48aa30443e52c9666d5cd5e67532e475f212337e to before ed712dc0d64dee5f0d05e4d8ca57711f8a9c850cAffected 48aa30443e52c9666d5cd5e67532e475f212337e to before 8a8a9fac9efa6423fd74938b940cb7d731780718Affected
LinuxLinux	6.18Affected before 6.18Not affected 6.18.16 through 6.18.Not affected 6.19.6 through 6.19.Not affected 7.0 and laterNot affected

References

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