CVE-2026-43208 Details
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.
A vulnerability in the Linux kernel's handling of Receive Packet Steering (RPS) flow IDs has been addressed. The issue arose because a previous commit assumed that the RPS table for each receive queue would be uniform in size and stability. This led to potential out-of-bounds access and crashes. The vulnerability is present in the RPS flow management within the networking subsystem.
Users can update to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for downloading the patched version are available on the official Linux kernel website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/5455a232edea6b946b99449f15ca771a8874a5a6 | kernel.org | Patch |
| https://git.kernel.org/stable/c/8a8a9fac9efa6423fd74938b940cb7d731780718 | kernel.org | Patch |
| https://git.kernel.org/stable/c/ed712dc0d64dee5f0d05e4d8ca57711f8a9c850c | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.18, < 6.18.16 >= 6.19, < 6.19.6 7.0 rc1 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 11, 2026 | Initial Analysis | [email protected] |
| May 8, 2026 | CVE Modified | kernel.org |
| May 6, 2026 | New CVE Received | kernel.org |