CVE-2026-43208
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-43208
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-43208.html
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/ed712dc0d64dee5f0d05e4d8ca57711f8a9c850c
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/8a8a9fac9efa6423fd74938b940cb7d731780718
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/5455a232edea6b946b99449f15ca771a8874a5a6
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 6.19.6-1 |
| debian | sid | fixed | 6.19.6-1 |
| debian | trixie | fixed | 0 |
| linux-kernel | affected | 6.18.16 | |
| linux-kernel | 7.0 | affected | |
References
- https://git.kernel.org/stable/c/5455a232edea6b946b99449f15ca771a8874a5a6
- https://git.kernel.org/stable/c/8a8a9fac9efa6423fd74938b940cb7d731780718
- https://git.kernel.org/stable/c/ed712dc0d64dee5f0d05e4d8ca57711f8a9c850c
- https://www.suse.com/security/cve/CVE-2026-43208.html
- https://security-tracker.debian.org/tracker/CVE-2026-43208
CWEs
CWE-787
Verify integrity in audit chain (admin only). AS-IS.